Journal articles: 'Rapeseed Analysis'

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Yang, Ruinan, Ligang Deng, Liangxiao Zhang, Xiaofeng Yue, Jin Mao, Fei Ma, Xiupin Wang, Qi Zhang, Wen Zhang, and Peiwu Li. "Comparative Metabolomic Analysis of Rapeseeds from Three Countries." Metabolites 9, no. 8 (August 1, 2019): 161. http://dx.doi.org/10.3390/metabo9080161.

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Rapeseed is an important oilseed with proper fatty acid composition and abundant bioactive components. Canada and China are the two major rapeseed-producing countries all over the world. Meanwhile, Canada and Mongolia are major importers of rapeseed due to the great demand for rapeseed in China. To investigate the metabolites in rapeseeds from three countries, ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS)-based metabolomics was employed to analyze rapeseeds from China, Canada, and Mongolia. As results, 67, 53, and 68 metabolites showed significant differences between Chinese and Canadian, Chinese and Mongolian, and Canadian and Mongolian rapeseeds, respectively. Differential metabolites were mainly distributed in the metabolic pathways including phenylpropanoid biosynthesis, flavone and flavonol biosynthesis, and ubiquinone and other terpenoid-quinone biosynthesis. Among the differential metabolites, contents of sinapate and sinapine were higher in Chinese rapeseeds, while the contents of brassicasterol, stigmasterol, and campestanol were higher in Canadian rapeseeds. These findings might provide insight into the metabolic characteristics of rapeseeds from three countries to guide processing and consumption of the products of rapeseed.

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Hamulczuk, Mariusz, Oksana Makarchuk, and Edgardo Sica. "Price Behaviour and Market Integration: Preliminary Evidence from the Ukrainian and European Union Rapeseed Markets." Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego 19(34), no. 1 (April 1, 2019): 47–58. http://dx.doi.org/10.22630/prs.2019.19.1.4.

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This paper aims to provide preliminary evidence about the existence of horizontal integration between the rapeseed markets in Ukraine (UA) and the European Union (EU). To this end, both a trade analysis and a price analysis were carried out. In particular, the trade analysis was performed using yearly trade flows between the UA and EU, whereas price co-movement was assessed by means of linear vector error correction model (VECM) applied to weekly prices for rapeseed from 2008 to 2018. Our findings provide evidence of strong integration between the UA and EU markets in terms of the trade of rapeseeds, rape cake, and rape oil, as well as high horizontal rapeseed price transmission between the two economies.

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Urmanov, A. I., G. G. Dubtsov, I. U. Kusova, and T. R. Lyubetskaya. "Application of rapeseed oil for convective drying in deep-frying products." Khleboproducty 29, no. 12 (2020): 44–46. http://dx.doi.org/10.32462/0235-2508-2020-29-12-44-46.

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The article deals with the problem of drying rapeseeds with high initial humidity. A drying method is proposed that allows to intensify this process and provides greater safety of the quality indicators of the dried seeds. The article also presents a comparative analysis of the use of rapeseed and palm oil as a deep-frying fat in the manufacture of instant pasta, indicating the use of oil obtained from rapeseed.

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Luo, Yuxiu, Shoulian Teng, Hengxia Yin, Shengping Zhang, Xiaoyun Tuo, and Lam-Son Phan Tran. "Transcriptome Analysis Reveals Roles of Anthocyanin- and Jasmonic Acid-Biosynthetic Pathways in Rapeseed in Response to High Light Stress." International Journal of Molecular Sciences 22, no. 23 (December 1, 2021): 13027. http://dx.doi.org/10.3390/ijms222313027.

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Rapeseed (Brassica napus) is one of the major important oil crops worldwide and is largely cultivated in the Qinghai-Tibetan plateau (QTP), where long and strong solar-radiation is well-known. However, the molecular mechanisms underlying rapeseed’s response to light stress are largely unknown. In the present study, the color of rapeseed seedlings changed from green to purple under high light (HL) stress conditions. Therefore, changes in anthocyanin metabolism and the transcriptome of rapeseed seedlings cultured under normal light (NL) and HL conditions were analyzed to dissect how rapeseed responds to HL at the molecular level. Results indicated that the contents of anthocyanins, especially glucosides of cyanidin, delphinidin, and petunidin, which were determined by liquid chromatography-mass spectrometry (LC-MS), increased by 9.6-, 4.2-, and 59.7-fold in rapeseed seedlings exposed to HL conditions, respectively. Next, RNA-sequencing analysis identified 7390 differentially expressed genes (DEGs), which included 4393 up-regulated and 2997 down-regulated genes. Among the up-regulated genes, many genes related to the anthocyanin-biosynthetic pathway were enriched. For example, genes encoding dihydroflavonol reductase (BnDFR) and anthocyanin synthase (BnANS) were especially induced by HL conditions, which was also confirmed by RT-qPCR analysis. In addition, two PRODUCTION OF ANTHOCYANIN PIGMENTATION 2 (BnPAP2) and GLABRA3 (BnGL3) genes encoding MYB-type and bHLH-type transcription factors, respectively, whose expression was also up-regulated by HL stress, were found to be associated with the changes in anthocyanin biosynthesis. Many genes involved in the jasmonic acid (JA)-biosynthetic pathway were also up-regulated under HL conditions. This finding, which is in agreement with the well-known positive regulatory role of JA in anthocyanin biosynthesis, suggests that the JA may also play a key role in the responses of rapeseed seedlings to HL. Collectively, these data indicate that anthocyanin biosynthesis-related and JA biosynthesis-related pathways mediate HL responses in rapeseed. These findings collectively provide mechanistic insights into the mechanisms involved in the response of rapeseed to HL stress, and the identified key genes may potentially be used to improve HL tolerance of rapeseed cultivars through genetic engineering or breeding strategies.

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Xue, Yufei, Chunyu Zhang, Rui Shan, Xiaorong Li, Alain Tseke Inkabanga, Lejing Li, Huanhuan Jiang, and Yourong Chai. "Genome-Wide Identification and Expression Analysis of nsLTP Gene Family in Rapeseed (Brassica napus) Reveals Their Critical Roles in Biotic and Abiotic Stress Responses." International Journal of Molecular Sciences 23, no. 15 (July 28, 2022): 8372. http://dx.doi.org/10.3390/ijms23158372.

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Non-specific lipid transfer proteins (nsLTPs) are small cysteine-rich basic proteins which play essential roles in plant growth, development and abiotic/biotic stress response. However, there is limited information about the nsLTP gene (BnLTP) family in rapeseed (Brassica napus). In this study, 283 BnLTP genes were identified in rapeseed, which were distributed randomly in 19 chromosomes of rapeseed. Phylogenetic analysis showed that BnLTP proteins were divided into seven groups. Exon/intron structure and MEME motifs both remained highly conserved in each BnLTP group. Segmental duplication and hybridization of rapeseed’s two sub-genomes mainly contributed to the expansion of the BnLTP gene family. Various potential cis-elements that respond to plant growth, development, biotic/abiotic stresses, and phytohormone signals existed in BnLTP gene promoters. Transcriptome analysis showed that BnLTP genes were expressed in various tissues/organs with different levels and were also involved in the response to heat, drought, NaCl, cold, IAA and ABA stresses, as well as the treatment of fungal pathogens (Sclerotinia sclerotiorum and Leptosphaeria maculans). The qRT-PCR assay validated the results of RNA-seq expression analysis of two top Sclerotinia-responsive BnLTP genes, BnLTP129 and BnLTP161. Moreover, batches of BnLTPs might be regulated by BnTT1 and BnbZIP67 to play roles in the development, metabolism or adaptability of the seed coat and embryo in rapeseed. This work provides an important basis for further functional study of the BnLTP genes in rapeseed quality improvement and stress resistance.

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W.-Paddock, Brian. "SUPPLY ANALYSIS OF RAPESEED ACREAGE." Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie 19, no. 1 (November 13, 2008): 110–17. http://dx.doi.org/10.1111/j.1744-7976.1971.tb01140.x.

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Li, Dong, Dan Wang, Huaming Xiao, Xin Lv, Chang Zheng, Changsheng Liu, Hong Chen, and Fang Wei. "Simultaneous Analysis of Free/Combined Phytosterols in Rapeseed and Their Dynamic Changes during Microwave Pretreatment and Oil Processing." Foods 11, no. 20 (October 14, 2022): 3219. http://dx.doi.org/10.3390/foods11203219.

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Here, a simple, efficient, and rapid solid phase extraction-gas chromatography (SPE–GC) method was developed for the simultaneous analysis of free/combined phytosterols in rapeseed and their dynamic changes during microwave pretreatment and oil processing. First, by comparing different methods for extracting free/combined phytosterols from rapeseed and rapeseed cake, the Folch method was considered to be the optimal method and was selected in subsequent experiments. Subsequently, the extraction method was validated by determining the recoveries of standards (brassinosterol, campesterol, β-sitosterol and cholesteryl oleate) spiked in rapeseed and rapeseed oil samples, and the recoveries were in the range from 82.7% to 104.5% and 83.8% to 116.3%, respectively. The established method was applied to study the dynamic changes of the form and content of phytosterols in rapeseed and its products (rapeseed oil and cake) during rapeseed microwave pretreatment and the oil production process. Additionally, the results showed that more than 55% of the free/combined phytosterols in rapeseed were transferred to rapeseed oil during the oil processing, and this proportion will increase after microwave pretreatment of rapeseed. This work will provide analytical methods and data support for a comprehensive understanding of phytosterols in rapeseed and its products during oil processing.

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Przybył, Krzysztof, Jolanta Wawrzyniak, Krzysztof Koszela, Franciszek Adamski, and Marzena Gawrysiak-Witulska. "Application of Deep and Machine Learning Using Image Analysis to Detect Fungal Contamination of Rapeseed." Sensors 20, no. 24 (December 19, 2020): 7305. http://dx.doi.org/10.3390/s20247305.

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This paper endeavors to evaluate rapeseed samples obtained in the process of storage experiments with different humidity (12% and 16% seed moisture content) and temperature conditions (25 and 30 °C). The samples were characterized by different levels of contamination with filamentous fungi. In order to acquire graphic data, the analysis of the morphological structure of rapeseeds was carried out with the use of microscopy. The acquired database was prepared in order to build up training, validation, and test sets. The process of generating a neural model was based on Convolutional Neural Networks (CNN), Multi-Layer Perceptron Networks (MLPN), and Radial Basis Function Networks (RBFN). The classifiers that were compared were devised on the basis of the environments Tensorflow (deep learning) and Statistica (machine learning). As a result, it was possible to achieve the lowest classification error of 14% for the test set, 18% classification error for MLPN, and 21% classification error for RBFN, in the process of recognizing mold in rapeseed with the use of CNN.

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Handa, Hirokazu. "Investigation of the origin and transmission of linear mitochondrial plasmid based on phylogenetic analysis in Japanese rapeseed varieties." Genome 50, no. 2 (February 2007): 234–40. http://dx.doi.org/10.1139/g06-150.

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A linear mitochondrial plasmid is present in some varieties of rapeseed. To elucidate its origin and transmission the author investigated types of mitochondrial genome and the presence of plasmid in 78 rapeseed varieties and landraces in Japan and carried out a comparative analysis using the breeding history of Japanese rapeseed varieties. The mitochondrial genome of rapeseed was classified roughly into 2 types, type I (nap) and type II (cam). Type II rapeseed mitochondria closely resembles that of Brassica rapa , which is a related species of rapeseed. In this study, the author found that all varieties with type II mitochondria originated from interspecific crosses between rapeseed ( B. napus ) and B. rapa. This indicates that type II cytoplasm was introduced to rapeseed through a breeding program. The presence of plasmid was limited to B. rapa landraces and rapeseed varieties that arose by interspecific crosses between B. napus and B. rapa. The results suggest that mitochondrial plasmid is of B. rapa origin and that it has been introduced into rapeseed by interspecific crosses in a modern breeding program, as in the case of the mitochondrial genome. Phylogenetic study of Japanese rapeseed varieties suggests the participation not of the mitochondrial genome but, rather, the nuclear genome for the perpetuation of plasmid in progeny varieties.

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Xiao, Zelin, Yuying Pan, Chao Wang, Xiongcai Li, Yiqing Lu, Ze Tian, Lieqiong Kuang, Xinfa Wang, Xiaoling Dun, and Hanzhong Wang. "Multi-Functional Development and Utilization of Rapeseed: Comprehensive Analysis of the Nutritional Value of Rapeseed Sprouts." Foods 11, no. 6 (March 8, 2022): 778. http://dx.doi.org/10.3390/foods11060778.

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Rapeseed is the third largest oil crop in the world and the largest oil crop in China. The multi-functional development and utilization of rapeseed is an effective measure for the high-quality development of rapeseed industry in China. In this study, several basic nutrients of eight rapeseed sprouts and five bean sprouts (3–5 varieties each) were determined, including sugar, crude protein, crude fiber, vitamin E, minerals, fatty acids, amino acids, and glucosinolates. Data analysis revealed that compared with bean sprouts, rapeseed sprouts were nutritionally balanced and were richer in active nutrients such as glucose, magnesium, selenium, vitamin E, and glucosinolate. Moreover, rapeseed sprouts exhibited reasonable amino acid composition and abundant unsaturated fatty acids (accounting for 90.32% of the total fatty acids). All these results indicated the potential of rapeseed sprout as a functional vegetable. Subsequently, three dominant nutrients including vitamin E, glucosinolate, and selenium were investigated in seeds and sprouts of 44 B. napus L. varieties. The results showed that germination raised the ratio of α-tocopherol/γ-tocopherol from 0.53 in seeds to 9.65 in sprouts, greatly increasing the content of α-tocopherol with the strongest antioxidant activity among the eight isomers of vitamin E. Furthermore, germination promoted the conversion and accumulation of glucosinolate components, especially, glucoraphanin with strong anti-cancer activity with its proportion increased from 1.06% in seeds to 1.62% in sprouts. In addition, the contents of selenium, vitamin E, and glucosinolate in rapeseed sprouts were highly correlated with those in seeds. Furthermore, these three dominant nutrients varied greatly within B. napus varieties, indicating the great potential of rapeseed sprouts to be further bio-enhanced. Our findings provide reference for the multi-purpose development and utilization of rapeseed, lay a theoretical foundation for the development of rapeseed sprout into a functional vegetable, and provide a novel breeding direction.

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Çulcuoğlu, Elif Ünay, Filiz Karaosm, Esin. "Thermogravimetric Analysis of the Rapeseed Cake." Energy Sources 23, no. 10 (December 2001): 889–95. http://dx.doi.org/10.1080/009083101317071333.

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Wathelet, J. P., P. J. Wagstaffe, R. Biston, M. Marlier, and M. Severin. "Rapeseed reference materials for glucosinolate analysis." Fresenius' Zeitschrift für analytische Chemie 332, no. 6 (January 1988): 689–93. http://dx.doi.org/10.1007/bf00472670.

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Huang, Wei, Haining Xu, Jiayin Pan, Chunhua Dai, Benjamin Kumah Mintah, Mokhtar Dabbour, Rong Zhou, Ronghai He, and Haile Ma. "Mixed-Strain Fermentation Conditions Screening of Polypeptides from Rapeseed Meal and the Microbial Diversity Analysis by High-Throughput Sequencing." Foods 11, no. 20 (October 20, 2022): 3285. http://dx.doi.org/10.3390/foods11203285.

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Conventional fermentation of rapeseed meal has disadvantages such as sterilization requirement, high energy consumption and low efficiency, as well as poor action of single bacteria. To overcome these drawbacks, mixed-strain fermentation of unsterilized rapeseed meal was investigated. Mixed-fermentation of unsterilized rapeseed meal (ratio of solid–liquid 1:1.2 g/mL) using Bacillus subtilis, Pediococcus acidilactici and Candida tropicalis (at 40 °C, for 3 days, with inoculation amount of 15% (w/w)) substantially increased the polypeptide content in rapeseed meal by 814.5% and decreased the glucosinolate content by 46.20%. The relationship between microbial diversity and physicochemical indicators showed that the improvement in polypeptide content was mainly caused by C. tropicalis (on the first day of fermentation) and B. subtilis (on the second day). Compared to raw rapeseed meal, the microbial diversity following the fermentation was significantly reduced, indicating that mixed-strain fermentation can inhibit the growth of miscellaneous bacteria. The study findings suggest that mixed-strain fermentation could be used to considerably increase the polypeptide content of unsterilized rapeseed meal, increasing the potential of rapeseed meal.

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Ryzhov, Yu N., A. A. Zhosan, and A. A. Kurochkin. "Features of injection and combustion of rapeseed oil and diesel fuel in modern engines." Traktory i sel hozmashiny 79, no. 6 (June 15, 2012): 19–20. http://dx.doi.org/10.17816/0321-4443-69347.

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Comparative analysis of injection of diesel fuel and rapeseed oil is given. Combustion process is considered as depending on the surface tension of diesel fuel, rapeseed oil and methyl ester of rapeseed oil. Features of combustion of diesel fuel and rapeseed oil are presented.

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Neog, Borsha. "Trend Analysis of Area, Production and Yield of Major Crops of Assam." Indian Journal of Pure & Applied Biosciences 10, no. 2 (April 30, 2022): 10–19. http://dx.doi.org/10.18782/2582-2845.8846.

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This paper emphasized trend analysis, growth rate and instability of the area, rice production and yield, and jute Rapeseed & Mustard in Assam. In this study, the different linear and non-linear function was used to fit the best-fitted Trend with the help of the value of measures of determination (R2) and mean square error (MSE). Quadratic functions were found to be the best-fitted trend equation for the estimation of area, production and yield of selected crops of Assam. The result shows an increasing trend for area, production and yield, except the area of Jute shows decreasing Trend. The compound growth rate of area, production and yield of Rice, Jute Rapeseed & Mustard seems significant and positive growth, but the area and production of Jute revealed a negative growth rate in Assam. From the value of the coefficient of variation (C.V), it has been observed that the production of all three crops has higher variation and the area of all selected crops has lower variation. The yield of Rice seems to have a very high variation in Rice, but Jute Rapeseed & Mustard shows a stable result.

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Duraipandian, Shiyamala, Jan C. Petersen, and Mikael Lassen. "Authenticity and Concentration Analysis of Extra Virgin Olive Oil Using Spontaneous Raman Spectroscopy and Multivariate Data Analysis." Applied Sciences 9, no. 12 (June 14, 2019): 2433. http://dx.doi.org/10.3390/app9122433.

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Adulteration of extra virgin olive oil (EVOO) with cheaper edible oils is of considerable concern in the olive oil industry. The potential of Raman spectroscopy combined with multivariate statistics has been investigated for evaluating the authenticity (or purity) and concentration of EVOO irrespective of it being adulterated with one or more adulterants. The adulterated oil samples were prepared by blending different concentrations of EVOO (10–100% v/v) randomly with cheaper edible oils such as corn, soybean and rapeseed oil. As a result, a Raman spectral database of oil samples (n = 214 spectra) was obtained from 11 binary mixtures (EVOO and rapeseed oil), 16 ternary mixtures (EVOO, rapeseed and corn oil) and 44 quaternary mixtures (EVOO, rapeseed, corn and soybean oil). Partial least squares (PLS) calibration models with 10-fold cross validation were constructed for binary, ternary and quaternary oil mixtures to determine the purity of spiked EVOO. The PLS model on the complex dataset (binary + ternary + quaternary) where the spectra obtained with different measurement parameters and sample conditions can able to determine the purity of spiked EVOO inspite of being blended with one or more cheaper oils. As a proof of concept, in this study, we used single batch of commercial oil bottles for estimating the purity of EVOO. The developed method is not only limited to EVOO, but can be applied to clean EVOO obtained from the production site and other types of food.

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Wang, Xiaodan, Hua Ma, Chunyun Guan, and Mei Guan. "Germplasm Screening of Green Manure Rapeseed through the Effects of Short-Term Decomposition on Soil Nutrients and Microorganisms." Agriculture 11, no. 12 (December 2, 2021): 1219. http://dx.doi.org/10.3390/agriculture11121219.

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The rapidly emerging fertilizer rapeseed used as green manure has wide applications for use. However, there have been few studies on its decomposition and effects on soil nutrients and microorganisms after its decay. In this study, 12 rapeseed lines to be screened were decomposed through a randomized block field design with two green-manure-specific varieties as the controls. The contents of nitrogen, phosphorus, and potassium from the plants, soil nutrients, and microbial changes after degradation were measured. There were substantial differences in the rates of decomposition and cumulative release of nutrients among the different lines after 30 days of rolling. The contents of phosphorus and potassium in the soil were 1.23–2.03 and 3.93–6.32 times those before decomposition, respectively. In addition, there was a significant difference in the relative content of soil microorganisms at the phylum level after the decomposition of different species of rapeseeds. Most of the top 20 bacterial groups significantly correlated with the characteristics of plant decomposition and soil nutrient content, including Proteobacteria, Actinomycetes, Armatimonadetes, Rokubacteria, and Planctomycetes. A principal component analysis showed that the soil microorganisms and nutrients are the leading factors that enable the evaluation of the decomposing characteristics of green manure rapeseed. Numbers 5 (purple leaf mustard) and 8 (Xiafang self-seeding) were more effective than two controls, which can be used as excellent types of germplasm to promote the breeding of green manure rapeseed.

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Li, Yang, Lizhang Xu, Zhipeng Gao, En Lu, and Yaoming Li. "Effect of Vibration on Rapeseed Header Loss and Optimization of Header Frame." Transactions of the ASABE 64, no. 4 (2021): 1247–58. http://dx.doi.org/10.13031/trans.13299.

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HighlightsThe relationship of vibration and header loss was studied by multi-point vibration measurement and loss collection test.There was an approximately linear positive correlation between total header vibration and total rapeseed header loss.The header frame was analyzed and optimized through modal simulation and testing.The total rapeseed header loss of the improved header was reduced by 33.2% to 46.9%.Abstract. In view of the current large rapeseed header losses of rape combine harvesters, the effects of the header on rapeseed header loss were studied from the perspective of vibration. First, the vibrations at various measuring points on the header during rape harvest were studied using a data acquisition and analysis system while performing collection tests of rapeseed header loss with the sample slot method. The relationships between total header vibration and total rapeseed header loss and between vertical cutter vibration and rapeseed vertical cutter loss were shown to have a positive correlation, and they all increased with the increase in engine speed. Vertical cutter loss accounted for 31.2% to 42.4% of the total rapeseed header loss. Modal analysis and optimization of the header frame were then performed by simulation and test. The natural frequencies of the first-order and second-order modes of the optimized header were increased, and the possibility of resonance with other working parts was eliminated. Finally, the improved header was tested during rape harvest. The results showed that the total vibration of the improved header was reduced by 19.9% to 43.9%, and the total rapeseed header loss was reduced by 33.2% to 46.9%. The vertical cutter vibration was reduced by 30.5% to 49.8%, and the rapeseed vertical cutter loss was reduced by 20.8% to 34.7%. In addition, the vibration and rapeseed loss of the improved header had relatively slow rates of increase with the increase in engine speed. The method of reducing rapeseed loss by reducing the header vibration achieved an obvious and positive effect. Keywords: Frame optimization, Modal analysis, Rape combine harvester, Rapeseed header loss, Vibration.

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Gubaev, Rim, Lyudmila Gorlova, Stepan Boldyrev, Svetlana Goryunova, Denis Goryunov, Pavel Mazin, Alina Chernova, Elena Martynova, Yakov Demurin, and Philipp Khaitovich. "Genetic Characterization of Russian Rapeseed Collection and Association Mapping of Novel Loci Affecting Glucosinolate Content." Genes 11, no. 8 (August 12, 2020): 926. http://dx.doi.org/10.3390/genes11080926.

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Rapeseed is the second most common oilseed crop worldwide. While the start of rapeseed breeding in Russia dates back to the middle of the 20th century, its widespread cultivation began only recently. In contrast to the world’s rapeseed genetic variation, the genetic composition of Russian rapeseed lines remained unexplored. We have addressed this question by performing genome-wide genotyping of 90 advanced rapeseed accessions provided by the All-Russian Research Institute of Oil Crops (VNIIMK). Genome-wide genetic analysis demonstrated a clear difference between Russian rapeseed varieties and the rapeseed varieties from the rest of the world, including the European ones, indicating that rapeseed breeding in Russia proceeded in its own independent direction. Hence, genetic determinants of agronomical traits might also be different in Russian rapeseed lines. To assess it, we collected the glucosinolate content data for the same 90 genotyped accessions obtained during three years and performed an association mapping of this trait. We indeed found that the loci significantly associated with glucosinolate content variation in the Russian rapeseed collection differ from those previously reported for the non-Russian rapeseed lines.

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Józsa, Viktor, and Attila Kun-Balog. "Spectroscopic analysis of crude rapeseed oil flame." Fuel Processing Technology 139 (November 2015): 61–66. http://dx.doi.org/10.1016/j.fuproc.2015.08.011.

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Kovalyshyn, S. J., O. P. Shvets, S. Grundas, and J. Tys. "Use of the electro-separation method for improvement of the utility value of winter rapeseeds." International Agrophysics 27, no. 4 (December 1, 2013): 419–24. http://dx.doi.org/10.2478/intag-2013-0012.

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Abstract The paper presents the results of a study of the use of electro-separation methods for improvement of the utility value of 5 winter rapeseed cultivars. The process of electro-separation of rapeseed was conducted on a prototype apparatus built at the Laboratory of Application of Electro-technologies in Agriculture, Lviv National Agriculture University. The process facilitated separation of damaged, low quality seeds from the sowing material. The initial mean level of mechanically damaged seeds in the winter rapeseed cultivars studied varied within the range of 15.8-20.1%. Verification of the amount of seeds with mechanical damage was performed on X-ray images of seeds acquired by means of a digital X-ray apparatus. In the course of analysis of the X-ray images, it was noted that the mean level of mechanical damage to the seeds after the electro-separation was in the range of 2.1-3.8%. The application of the method of separation of rapeseeds in the corona discharge field yielded a significant reduction of the level of seeds with mechanical damage. The application of the method in practice may effectively contribute to improvement of the utility value of sowing material or seed material for production of edible oil.

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Dai, Wendong, Teerayoot Girdthai, Zesu Huang, Mariena Ketudat-Cairns, Rong Tang, and Shaoming Wang. "Genetic analysis for anthocyanin and chlorophyll contents in rapeseed." Ciência Rural 46, no. 5 (May 2016): 790–95. http://dx.doi.org/10.1590/0103-8478cr20150564.

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ABSTRACT: Rapeseed ( Brassica napus L.) with purple-red leaf is a valuable resource for plant breeder. It was utilized in breeding program as a morphological marker, and the source of resistance gene to biotic or abiotic stress due to its anthocyanin content (AC). However, the inheritance of AC and the correlation with chlorophyll content (CC) in rapeseed leaf are still unknown. This study aimed to investigate the gene action and heritability of AC and CC in a 10-Zi006 × 10-4438 rapeseed cross using generation mean analysis. The results indicated that AC and CC were controlled by main gene effect and non-allelic interactions. The AC was mainly controlled by genetic effect. However, the genetic effect and non-genetic effect were both important for CC. In addition, the total fixable gene effects was higher than unfixable gene effects for AC, but opposite results was found for CC. Both negative and positive correlations between AC and CC were obtained in different generations.

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VLACHOS, C. E., N. A. MARIOLIS, and G. N. SKARACIS. "A comparative greenhouse gas emission analysis of oilseed crops for biodiesel production in Greece." Journal of Agricultural Science 152, no. 2 (February 26, 2013): 263–73. http://dx.doi.org/10.1017/s0021859613000075.

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SUMMARYSunflower (Helianthus annuus L.) and rapeseed (Brassica napus L.) are considered as the most suitable crops for biodiesel production in the Mediterranean basin. Soybean (Glycine max L.) could also be used, under certain conditions. In Greece, the farming practice adopted in each region varies significantly, leading to significant differences in the levels of emitted greenhouse gases (GHG). Greenhouse gas emissions were estimated during the cultivation phase as grams of carbon dioxide equivalents (g CO2e) per megajoule (MJ), followed by emission savings (%) estimation when fossil fuels are replaced by biodiesel. Crop and region comparisons provided important information towards promoting sustainability. Overall, sunflower demonstrated the lowest average emissions, 53·8 g CO2e/MJ, followed by rapeseed and soybean. Furthermore, rapeseed achieved the lowest emission saving level required by European legislation in most cases studied, with an average value of 37%. Irrigation and nitrogen fertilization were the operations mostly contributing to the total quantity of GHG emissions. More specifically, the highest GHG emissions were found for soybean irrigation (34%) and rapeseed nitrogen fertilization (68%).

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Yang, Dazuo, Hao Li, Chenchen Cao, Fudi Chen, Yibing Zhou, and Zhilong Xiu. "Analysis of the Oil Content of Rapeseed Using Artificial Neural Networks Based on Near Infrared Spectral Data." Journal of Spectroscopy 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/901310.

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The oil content of rapeseed is a crucial property in practical applications. In this paper, instead of traditional analytical approaches, an artificial neural network (ANN) method was used to analyze the oil content of 29 rapeseed samples based on near infrared spectral data with different wavelengths. Results show that multilayer feed-forward neural networks with 8 nodes (MLFN-8) are the most suitable and reasonable mathematical model to use, with an RMS error of 0.59. This study indicates that using a nonlinear method is a quick and easy approach to analyze the rapeseed oil’s content based on near infrared spectral data.

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Padgurskas, Juozas, Raimundas Rukuiža, Algirdas Meškinis, Raimondas Kreivaitis, and Bronislovas Spruogis. "INFLUENCE OF MANUFACTURING METHODS ON THE TRIBOLOGICAL PROPERTIES OF RAPESEED OIL LUBRICANTS." TRANSPORT 31, no. 1 (June 15, 2015): 56–62. http://dx.doi.org/10.3846/16484142.2015.1048525.

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Tribological properties of rapeseed oils manufactured and processed by different methods and modified by the anti-wear additives were analysed. Tribological tests presented that unrefined rapeseed oil has better wear resistance compared to refined oil. Modification of rapeseed oil with 2% of special biological anti-wear additives has the greatest influence on refined rapeseed oil. Chemical analysis shows that refinement removes acids from oil. Refinement and lower acidity allows more efficient operation of special biological anti-wear additives.

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Bunin, E. S., G. V. Kalashnikov, E. V. Litvinov, and S. V. Makeev. "Biochemical and physico-chemical changes of rapeseeds during combined microwave drying in the production of rapeseed oil." IOP Conference Series: Earth and Environmental Science 1052, no. 1 (July 1, 2022): 012091. http://dx.doi.org/10.1088/1755-1315/1052/1/012091.

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Abstract Rapeseed oil production technology implies repeated heating of oilseed raw materials; therefore, there is a high probability of biochemical and physico-chemical changes in its composition and a decrease in the nutritional value of the finished product. It is known that rapeseed seeds are balanced in protein, amino acids and vitamins, among which a special role belongs to antioxidants - tocopherols, the level and isomer composition of which determine the oil's resistance to oxidation. Therefore, it is particularly interesting to study the effect of temperature exposure on the quantitative content of the listed components and the qualitative composition of rapeseed seeds. At the final stages of rapeseed oil production, the seeds should arrive dried to a certain moisture content and with the maximum possible preservation of native properties. Therefore, the key link of the machine-hardware scheme of rapeseed oil production developed by us is a microwave drying apparatus with a combined power supply. The aim of the work is a comparative study of the quality indicators of rapeseed dried in a microwave device with a combined power supply and a traditional method. As a result of experimental studies, a comparative analysis of biochemical and physico-chemical changes in rapeseed seeds was carried out, which allows us to draw a positive conclusion about the feasibility of using a microwave drying apparatus as part of the rapeseed oil production line.

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Song, Jurong, Bao Li, Yanke Cui, Chenjian Zhuo, Yuanguo Gu, Kaining Hu, Jing Wen, et al. "QTL Mapping and Diurnal Transcriptome Analysis Identify Candidate Genes Regulating Brassica napus Flowering Time." International Journal of Molecular Sciences 22, no. 14 (July 15, 2021): 7559. http://dx.doi.org/10.3390/ijms22147559.

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Timely flowering is important for seed formation and maximization of rapeseed (Brassica napus) yield. Here, we performed flowering-time quantitative trait loci (QTL) mapping using a double haploid (DH) population grown in three environments to study the genetic architecture. Brassica 60 K Illumina Infinium™ single nucleotide polymorphism (SNP) array and simple sequence repeat (SSR) markers were used for genotyping of the DH population, and a high-density genetic linkage map was constructed. QTL analysis of flowering time from the three environments revealed five consensus QTLs, including two major QTLs. A major QTL located on chromosome A03 was detected specifically in the semi-winter rapeseed growing region, and the one on chromosome C08 was detected in all environments. Ribonucleic acid sequencing (RNA-seq) was performed on the parents’ leaves at seven time-points in a day to determine differentially expressed genes (DEGs). The biological processes and pathways with significant enrichment of DEGs were obtained. The DEGs in the QTL intervals were analyzed, and four flowering time-related candidate genes were found. These results lay a foundation for the genetic regulation of rapeseed flowering time and create a rapeseed gene expression library for seven time-points in a day.

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Sendzikiene, Egle, Violeta Makareviciene, and Irina Kazanceva. "Life Cycle Analysis of Rapeseed Oil Butyl Esters Produced from Waste and Pure Rapeseed Oil." Polish Journal of Environmental Studies 27, no. 2 (January 26, 2018): 829–37. http://dx.doi.org/10.15244/pjoes/75822.

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Jankulovska, Mirjana, Sonja Ivanovska, Ana Marjanovic-Jeromela, Snjezana Bolaric, Ljupcho Jankuloski, D. DimovZoran, Dane Bosev, and Biljana Kuzmanovska. "Multivariate analysis of quantitative traits can effectively classify rapeseed germplasm." Genetika 46, no. 2 (2014): 545–59. http://dx.doi.org/10.2298/gensr1402545j.

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In this study, the use of different multivariate approaches to classify rapeseed genotypes based on quantitative traits has been presented. Tree regression analysis, PCA analysis and two-way cluster analysis were applied in order todescribe and understand the extent of genetic variability in spring rapeseed genotype by trait data. The traits which highly influenced seed and oil yield in rapeseed were successfully identified by the tree regression analysis. Principal predictor for both response variables was number of pods per plant (NP). NP and 1000 seed weight could help in the selection of high yielding genotypes. High values for both traits and oil content could lead to high oil yielding genotypes. These traits may serve as indirect selection criteria and can lead to improvement of seed and oil yield in rapeseed. Quantitative traits that explained most of the variability in the studied germplasm were classified using principal component analysis. In this data set, five PCs were identified, out of which the first three PCs explained 63% of the total variance. It helped in facilitating the choice of variables based on which the genotypes? clustering could be performed. The two-way cluster analysissimultaneously clustered genotypes and quantitative traits. The final number of clusters was determined using bootstrapping technique. This approach provided clear overview on the variability of the analyzed genotypes. The genotypes that have similar performance regarding the traits included in this study can be easily detected on the heatmap. Genotypes grouped in the clusters 1 and 8 had high values for seed and oil yield, and relatively short vegetative growth duration period and those in cluster 9, combined moderate to low values for vegetative growth duration and moderate to high seed and oil yield. These genotypes should be further exploited and implemented in the rapeseed breeding program. The combined application of these multivariate methods can assist in deciding how, and based on which traits to select the genotypes, especially in early generations, at the beginning of a breeding program.

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Ren, Jingzheng, Alessandro Manzardo, Anna Mazzi, Andrea Fedele, and Antonio Scipioni. "Emergy Analysis and Sustainability Efficiency Analysis of Different Crop-Based Biodiesel in Life Cycle Perspective." Scientific World Journal 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/918514.

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Biodiesel as a promising alternative energy resource has been a hot spot in chemical engineering nowadays, but there is also an argument about the sustainability of biodiesel. In order to analyze the sustainability of biodiesel production systems and select the most sustainable scenario, various kinds of crop-based biodiesel including soybean-, rapeseed-, sunflower-, jatropha- and palm-based biodiesel production options are studied by emergy analysis; soybean-based scenario is recognized as the most sustainable scenario that should be chosen for further study in China. DEA method is used to evaluate the sustainability efficiencies of these options, and the biodiesel production systems based on soybean, sunflower, and palm are considered as DEA efficient, whereas rapeseed-based and jatropha-based scenarios are needed to be improved, and the improved methods have also been specified.

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Niola, Vincenzo, Sergio Savino, Giuseppe Quaremba, Chiara Cosenza, Armando Nicolella, and Mario Spirto. "Discriminant Analysis of the Vibrational Behavior of a Gas Micro-Turbine as a Function of Fuel." Machines 10, no. 10 (October 12, 2022): 925. http://dx.doi.org/10.3390/machines10100925.

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Several studies were conducted previously on fuel and biofuel performance of micro-turbines. The present paper combines experimental and statistical approaches to study the vibrational behavior of a gas micro-turbine supplied with different pure fuels and admixed with rapeseed oils. Experimental tests carried out at different operating conditions have allowed us to build a classification model through using discriminant analysis. The classification model can distinguish the vibrational behavior occurring when the turbine is fueled with kerosene, or pure and admixed diesel with rapeseed oil. Moreover, the methodology has even allowed us to highlight differences in vibrational behavior caused by small amounts of rapeseed oil admixed in the fuel. The model reliability, in terms of Cohen’s kappa, results in optimal data classification.

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Buklagin, Dmitry. "Analysis of the use of selection achievements in the production of oilseeds." E3S Web of Conferences 175 (2020): 08009. http://dx.doi.org/10.1051/e3sconf/202017508009.

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The availability of spare capacities for the production of vegetable oil in Russia and the increased demand in the world’s industrial markets stimulate the development of domestic competitive technologies for growing, storing and processing sunflower, soybean and rapeseed. Reducing the level of dependence of oilseeds on foreign analogues is considered as one of the key tasks. Currently, the share of foreign varieties in Russia occupies about 56 % of the acreage of spring rapeseed, 76% of winter rapeseed, 74% of sunflower and 26% of soy. It is shown that the inclusion of foreign varieties of oilseeds in the State register of varieties approved for use in the Russian Federation is not always justified. It is recommended to include in the state register only those varieties of foreign selection that have a statistically significant difference in the indicators of domestic and foreign varieties obtained as a result of their tests in the regions of Russia.

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Bunin, E. S., G. V. Kalashnikov, and S. V. Makeev. "Comparative analysis of the food and feed value of rapeseed dried by convective method and using microwave power supply in a swirling coolant flow." Proceedings of the Voronezh State University of Engineering Technologies 82, no. 3 (October 19, 2020): 32–38. http://dx.doi.org/10.20914/2310-1202-2020-3-32-38.

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When choosing a method for drying rapeseed seeds, along with the productivity and energy costs of the process, it is necessary to take into account the quality of the resulting product. It is determined by the appearance of seeds, the balance of protein, vitamin and amino acid composition, as well as the quality of the oil contained in the seeds. Therefore, it is necessary that during the drying process, these indicators should be preserved and, if possible, improved.The aim of this work is to compare the quality indicators of rapeseed seeds dried in a microwave device with a swirling flow of heat carrier and the traditional method of convective heat transfer.The qualitative indicators of rapeseed and canola oil during convective and microwave drying were studied. The influence of microwave energy on the drying process and the quality of rapeseed in a microwave device with a swirling coolant flow was studied. Organoleptic and physico-chemical indicators of the quality of rapeseed dried by convective method and using a combined microwave power supply were determined. The study of the composition of proteins, the content of amino acids and vitamins of group E, as the most important quality indicators in the production of food products and feed additives using rapeseed. A comparative analysis of changes in the quality indicators of rapeseed seeds is performed, which allows identifying structural changes occurring during the drying process and assessing the quality of the resulting product during convective drying and using a combined microwave power supply. In the experimental studies found that the use of microwave energy in the drying process leads not only to increasing productivity, reducing energy costs, but also helps to preserve nutritional value, complete protein, amino acids and vitamin E dried product.

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DAUN, J. K. "Glucosinolate Analysis in Rapeseed and Canola-An Update." Journal of Japan Oil Chemists' Society 35, no. 6 (1986): 426–34. http://dx.doi.org/10.5650/jos1956.35.426.

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Ozturk, H. Huseyin. "Energy Analysis for Biodiesel Production from Rapeseed Oil." Energy Exploration & Exploitation 32, no. 6 (December 2014): 1005–31. http://dx.doi.org/10.1260/0144-5987.32.6.1005.

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Wesołowski, Marek, and Joanna Erecińska. "Thermal analysis in quality assessment of rapeseed oils." Thermochimica Acta 323, no. 1-2 (December 1998): 137–43. http://dx.doi.org/10.1016/s0040-6031(98)00515-2.

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Ahro, Mikko, Mari Hakala, Jyrki Kauppinen, and Heikki Kallio. "Headspace FT-IR Analysis of Rapeseed Oil Oxidation." Applied Spectroscopy 56, no. 2 (February 2002): 217–22. http://dx.doi.org/10.1366/0003702021954476.

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Esmaeilpour-Troujeni, Mahdi, Abbas Rohani, and Mehdi Khojastehpour. "Optimization of rapeseed production using exergy analysis methodology." Sustainable Energy Technologies and Assessments 43 (February 2021): 100959. http://dx.doi.org/10.1016/j.seta.2020.100959.

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Islam, MS, MA Islam, MA Begum, M. Maniruzzaman, and MAU Alam. "Yield performance of lentil as a mixed crop with rapeseed." Bangladesh Agronomy Journal 17, no. 1 (June 15, 2015): 33–40. http://dx.doi.org/10.3329/baj.v17i1.23674.

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Mixed crop cultivation of lentil and rapeseed could be a promising technology for yield maximization. The field experiment was carried out at multilocation testing site, Kashinathpur, Pabna during the rabi season of 2011-12 and 2012-13 to verify the performance of rapeseed as mixed crop with lentil at different seeding ratios. The treatment comprises for the experiment were T1: Sole lentil (100%), T2: Sole rapeseed (100%), T3: Lentil (100%) + Rapeseed (10%), T4: Lentil (100%) + Rapeseed (20%), T5: Lentil (100%) + Rapeseed (30%) and T6 :Farmers practice :Lentil (100%) + Rapeseed (15%). The highest lentil equivalent yield (2.22 t ha-1 in and 2.48 ) and maximum land equivalent ratios (1.27 and 1.28) were observed in T4 treatment in 2011-12 and 2012-13, respectively.. It was noted that all the mixed cropping systems produced higher equivalent yield and LER than that of their corresponding sole crops. . Cost and return analysis showed that the highest net return (Tk. 127774 ha-1) was found in T4 treatment while sole rapeseed gave the lowest net return (Tk. 60540 ha-1). Net return was always higher under mixed cropping system than that of sole cropping. The highest benefit cost ratio 3.48 was recorded from Lentil (100%) + Rapeseed (20%) where as the minimum (1.39) from soli rapeseed.Bangladesh Agron. J. 2014, 17(1): 33-40

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LIPSA, Florin Daniel, Rod SNOWDON, Benjamin WITTKOP, and Wolfgang FRIEDT. "QUANTITATIVE GENETIC ANALYSIS OF PHENOLIC ACIDS IN OILSEED RAPE MEAL." Journal of Applied Life Sciences and Environment 55, no. 2 (190) (January 16, 2023): 111–23. http://dx.doi.org/10.46909/alse-552051.

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Rapeseed meal, a by-product of oilseed extraction related to the agri-food and biofuel industries due to its favourable composition of essential amino acids, is currently utilised for animal feed. In this study, 166 doubled haploid (DH) rapeseed lines from the segregating Brassica napus doubled haploid population YE2-DH were genetically and chemically analysed for phenolic acids. The relationship between seed colour and phenolic acid fractions in B. napus was investigated using these analyses to improve the quality of rapeseed meal. High-performance liquid chromatography assays were used to estimate phenolic acid content, and the outcomes were used to identify quantitative trait loci (QTL). Nine quantitative feature loci for three distinct phenolic acid compounds were mapped to seven linkage groups. A minor QTL for sinapine was located on linkage group C05 in the same interval as the QTL for seed colour. On chromosome A09, two loci for phenolic acids colocalised with the main QTL for seed colour. Closely linked molecular markers for the target traits (seed colour, phenolic acids) identified during this study could be useful tools for breeding new oilseed rape cultivars with lower levels of antinutritive compounds.

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Housseinpour, Reza, Ahmad Jahan Latibari, Ramin Farnood, Pedram Fatehi, and S. Javad Sepiddehdam. "Fiber Morphology and Chemical Composition of Rapeseed (Brassica Napus) Stems." IAWA Journal 31, no. 4 (2010): 457–64. http://dx.doi.org/10.1163/22941932-90000035.

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Rapeseed (Brassica napus L.) stalks are widely available. Data on their fiber morphology and chemical composition is important to establish their best performance during pulping. This study found that average fiber length, fiber width, cell wall thickness, and lumen width of rapeseed were 1.32 mm, 31 μm, 5.75 μm, and 19.5 μm, respectively. Rapeseed fibers appear almost identical to wood fibers, but the accompanying vessel elements and parenchyma cells mean that small particles (fines) will be produced during refining. The chemical analysis of depithed rapeseed stalks showed that the cellulose, lignin, holocellulose, pentosan, and ash were 48.5%, 20%, 77.5%, 17%, and 6.6%, respectively. Alcoholacetone, hot water, cold water, and 1%-NaOH solubility were 6.6%, 5%, 13.8%, and 50.3%, respectively. These results indicate rapeseed stalks are suitable for pulping and papermaking.

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Gardyński, Leszek, and Jolanta Kałdonek. "RESEARCH ON LUBRICATION PROPERTIES OF SELECTED RAW PLANT AND ANIMAL MATERIALS." Transport 35, no. 1 (February 5, 2020): 20–25. http://dx.doi.org/10.3846/transport.2020.11961.

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The article presents the results of research on lubrication properties of rapeseed oil, methyl esters of rapeseed oil, as well as esters with goose fat. Rapeseed oil has a better lubrication properties in relation to methyl esters of rapeseed oil. Addition of goose fat to esters negatively affected their lubrication properties. The presented results confirm a relationship between the degree of unsaturated and lubricated properties. Among the tested compounds with oxygen groups (COOH, COOCH3, C = O), the oleic acid (with a COOH group) characterised the best lubricity. The fat goose, which contains the least amount of unsaturated fatty acid esters, proved to be ineffective addition lubricity between the factor lubricants analysis.

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Li, Qing, and Cong Wang. "An Evaluation of Chinese Rapeseed Production Efficiency Based on Three-Stage DEA and Malmquist Index." Sustainability 14, no. 23 (November 28, 2022): 15822. http://dx.doi.org/10.3390/su142315822.

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As a widely grown oil crop in China, rapeseed accounts for 38.6% of China’s total oil crop production. In order to ensure the sustainable and healthy development of the rapeseed industry, this essay uses the input-output panel data of 15 central rapeseed-producing provinces (cities) in China from 2011 to 2019. The reasons for the change of the index were further studied using three-stage data envelopment analysis (DEA) and the Malmquist method. The three-stage DEA results show that the scale efficiency of rapeseed production increases in other provinces, except in Qinghai Province and Gansu Province, and that scale efficiency can be improved through additional investment. Planting enterprises can improve their efficiency by improving the efficiency of scientific and technological progress. On the other hand, government expenditure has a positive impact on rapeseed production efficiency. The Malmquist index shows that the technical progress efficiency index has the most significant impact during this period and the rapeseed total factor productivity can be improved by improving technological progress efficiency. In addition, according to the measured results, corresponding suggestions are put forward.

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Babazadeh, Reza, Mohammad Voria Yavarirad, and Ehsan Momeni Bashusqeh. "Location Optimization of Rapeseed and Soybean Cultivation Areas Considering Economic, Climatic and Social Criteria." International Journal of Social Ecology and Sustainable Development 9, no. 3 (July 2018): 53–65. http://dx.doi.org/10.4018/ijsesd.2018070104.

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This article describes how among different oilseeds, rapeseed and soybean contain considerable amounts of protein and oil and have a specific role in agriculture and supplying food. Optimizing the cultivation areas of rapeseed and soybean based on sustainability factors will improve their productivity, economic, environmental, and social objectives. The goal of the present article is to investigate the background for cultivation of these two types of seeds using a data envelopment analysis (DEA) method. Sustainable development criteria including economic, climatic and social criteria are considered in assessing the candidate locations for cultivating soybean and rapeseed by DEA model. The proposed method is applied in Iran. The Principle Component Analysis (PCA) method is used to verify and validate the results of DEA model. Results show that the DEA model can be used as a powerful tool to optimize the cultivation areas of soybean and rapeseed.

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Khan, Shahid Ullah, Sumbul Saeed, Muhammad Hafeez Ullah Khan, Chuchuan Fan, Sunny Ahmar, Osvin Arriagada, Raheel Shahzad, Ferdinando Branca, and Freddy Mora-Poblete. "Advances and Challenges for QTL Analysis and GWAS in the Plant-Breeding of High-Yielding: A Focus on Rapeseed." Biomolecules 11, no. 10 (October 15, 2021): 1516. http://dx.doi.org/10.3390/biom11101516.

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Yield is one of the most important agronomic traits for the breeding of rapeseed (Brassica napus L), but its genetic dissection for the formation of high yield remains enigmatic, given the rapid population growth. In the present review, we review the discovery of major loci underlying important agronomic traits and the recent advancement in the selection of complex traits. Further, we discuss the benchmark summary of high-throughput techniques for the high-resolution genetic breeding of rapeseed. Biparental linkage analysis and association mapping have become powerful strategies to comprehend the genetic architecture of complex agronomic traits in crops. The generation of improved crop varieties, especially rapeseed, is greatly urged to enhance yield productivity. In this sense, the whole-genome sequencing of rapeseed has become achievable to clone and identify quantitative trait loci (QTLs). Moreover, the generation of high-throughput sequencing and genotyping techniques has significantly enhanced the precision of QTL mapping and genome-wide association study (GWAS) methodologies. Furthermore, this study demonstrates the first attempt to identify novel QTLs of yield-related traits, specifically focusing on ovule number per pod (ON). We also highlight the recent breakthrough concerning single-locus-GWAS (SL-GWAS) and multi-locus GWAS (ML-GWAS), which aim to enhance the potential and robust control of GWAS for improved complex traits.

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Wu, J. G., C. H. Shi, and H. Z. Zhang. "Genetic analysis of embryo, cytoplasmic, and maternal effects and their environment interactions for protein content in Brassica napus L." Australian Journal of Agricultural Research 56, no. 1 (2005): 69. http://dx.doi.org/10.1071/ar04089.

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A genetic model for quantitative traits of seeds in diploid plants was applied to estimate the genetic main effects and genotype × environment (GE) interaction effects for protein content (PC) of rapeseed (Brassica napus L.) by using 2 years of experimental data with a diallel mating design of 8 parents. Results showed that PC of rapeseed was simultaneously controlled by genetic effects of embryo, cytoplasm, and maternal plant, of which the maternal genetic effects were most important, followed by embryo and cytoplasmic genetic effects. Therefore, improvement of PC of rapeseed would be more efficient when selection is based on maternal plants than that on single seeds. Since the GE interaction effects accounted for about 60.10% of total genetic effect, they were more important than the genetic main effects, and selection for PC might be influenced by environmental conditions. The total narrow-sense heritability for PC was 64.17%, of which the interaction heritability was larger than the general heritability. Selection for improving PC can therefore be conducted in early generations. Maternal heritability (41.59%) was most important for PC, followed by cytoplasmic heritability (17.62%) and then by embryo heritability (5.25%). Based on prediction of genetic effects, parent Youcai 601 was better than others for increasing PC in rapeseed breeding.

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Liu, Ping, Xin Wang, Jiang Wu, Wang Lin, Yanhan Feng, Boshui Chen, Jianhua Fang, and Zeqi Jiang. "Effect of boron-nitrogen modified soybean oil additive on biodegradability, anti-oxidation property, and lubricity of rapeseed oil." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 2 (July 4, 2019): 282–91. http://dx.doi.org/10.1177/1350650119861785.

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Two novel boron-nitrogen modified soybean oil additives with different length of chain structures (abbreviated as BNS1 and BNS2) were synthesized. The thermal stability of BNS1 and BNS2 was evaluated by thermo-gravimetric analysis. The effect of the as-synthesized additives on the biodegradability, anti-oxidation property, and lubricity in rapeseed oil was evaluated by respective standard method. Moreover, the morphology and tribochemical characteristics of the worn surfaces were examined by scanning electron microscope assembled with energy dispersive spectrometer. The results indicated that BNS1 and BNS2 both possess good thermal stability; BNS1 slightly impairs the biodegradability of rapeseed oil, but BNS2 facilitates the biodegradability of rapeseed oil. BNS1 and BNS2 could improve the anti-wear and friction-reducing performance of the rapeseed oil, but BNS1 exhibited better anti-wear ability as compared to that of BNS2, BNS2 exhibited better anti-wear ability in reducing friction coefficients as compared to that of BNS1. The enhanced anti-wear and friction-reducing abilities of rapeseed oil were ascribed to the formation of a composite boundary lubrication film due to the strong adsorption of BNS1 or BNS2 and rapeseed oil onto the lubricated surfaces and their tribochemical reactions with metal surfaces. BNS1 and BNS2 could both facilitate the anti-oxidation properties of the rapeseed oil.

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Hassan, S. A., and M. J. Bryant. "The response of store lambs to protein supplementation of a roughage-based diet." Animal Science 42, no. 1 (February 1986): 73–79. http://dx.doi.org/10.1017/s0003356100017748.

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ABSTRACTThe response of 35-kg store lambs to diets containing increasing rumen-undegradable nitrogen (UDN) concentrations was measured by live-weight gain and nitrogen (N) balance. A range of UDN concentrations from 2·4 to 7·2 g/kg dietary dry matter was achieved by supplementing a basal diet of NaOH-treated barley straw, tapioca, extracted rapeseed meal and minerals with both formaldehyde-treated rapeseed meal and fish meal. Sufficient diet to provide maintenance and a growth rate of 150 g/day was given to the lambs, according to live weight. Increasing levels of UDN promoted a linear increase in live-weight gain and N retention. However, the response to fish meal was greater than that for formaldehyde-treated rapeseed meal. The true digestibility of N of formaldehyde-treated rapeseed meal determined in chickens by ileal analysis was low in comparison to that of untreated rapeseed meal.

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Chen, Tong, Xingpu Qi, Mingjie Chen, and Bin Chen. "Gas Chromatography-Ion Mobility Spectrometry Detection of Odor Fingerprint as Markers of Rapeseed Oil Refined Grade." Journal of Analytical Methods in Chemistry 2019 (August 4, 2019): 1–8. http://dx.doi.org/10.1155/2019/3163204.

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In this work, gas chromatography-ion mobility spectrometry (GC-IMS) was used to analyze the volatile organic compound changes of rapeseed oil with different refined grades, the odor fingerprints of refined rapeseed oil were constructed, and a nonlinear model was built to realize rapid and accurate discrimination of rapeseed oil with different refined grades. 124 rapeseed oil samples with different refined grades were collected and analyzed by GC-IMS and chemometric tools, and 34 characteristic peaks were selected by the colorized difference method as variables to characterize the internal quality in rapeseed oil of different refined grades. The principal component analysis algorithm was used to further reduce dimensionality and extract the most relevant information. The k-nearest neighbor algorithm was applied to build a discriminant model. All the samples were recognized accurately without errors, and the results show the potential of this method to discriminate different refined grades of vegetable oil.

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Wan, Heping, Jiali Qian, Hao Zhang, Hongchen Lu, Ouqi Li, Rihui Li, Yi Yu, et al. "Combined Transcriptomics and Metabolomics Analysis Reveals the Molecular Mechanism of Salt Tolerance of Huayouza 62, an Elite Cultivar in Rapeseed (Brassica napus L.)." International Journal of Molecular Sciences 23, no. 3 (January 24, 2022): 1279. http://dx.doi.org/10.3390/ijms23031279.

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Soil salinity is one of the most significant abiotic stresses affecting crop yield around the world. To explore the molecular mechanism of salt tolerance in rapeseed (Brassica napus L.), the transcriptome analysis and metabolomics analysis were used to dissect the differentially expressed genes and metabolites in two rapeseed varieties with significant differences in salt tolerance; one is an elite rapeseed cultivar, Huayouza 62. A total of 103 key differentially expressed metabolites (DEMs) and 53 key differentials expressed genes (DEGs) that might be related to salt stress were identified through metabolomics and transcriptomics analysis. GO and KEGG analysis revealed that the DEGs were mainly involved in ion transport, reactive oxygen scavenging, osmotic regulation substance synthesis, and macromolecular protein synthesis. The DEMs were involved in TCA cycle, proline metabolism, inositol metabolism, carbohydrate metabolic processes, and oxidation-reduction processes. In addition, overexpression of BnLTP3, which was one of the key DEGs, could increase tolerance to salt stress in Arabidopsis plants. This study reveals that the regulation mechanism of salt tolerance in rapeseed at the transcriptome and metabolism level and provides abundant data for further in-depth identification of essential salt tolerance genes.

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Journal articles on the topic 'Rapeseed Analysis'

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