Relevant bibliographies by topics / Resistant varieties

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  3. Books
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Academic literature on the topic 'Resistant varieties'

Author: Grafiati
Published: 2 June 2025
Last updated: 13 July 2025

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Journal articles on the topic "Resistant varieties"

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Pink, D. A. C., and P. Hand. "Plant resistance and strategies for breeding resistant varieties." Plant Protection Science 38, SI 1 - 6th Conf EFPP 2002 (2002): S9—S14. http://dx.doi.org/10.17221/10310-pps.

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An explanation of the ‘boom-bust’ cycle of resistance breeding was provided by the gene-for-gene relationship between a pathogen and its host. Despite this understanding, most R genes continued to be deployed singly and resistance has been ephemeral. The reasons for breeding ‘single R gene’ varieties are discussed. Alternative strategies for the deployment of R genes and the use of quantitative race non-specific resistance have been advocated in order to obtain durable resistance. The feasibility of both of these approaches is discussed taking into account the impact of technologies such as plant transformation and marker-assisted selection. A change in focus from durability of the plant phenotype to that of the crop phenotype is advocated.
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Esanovich, Karshiev Alisher. "SELECTING DROUGHT-RESISTANT APRICOT VARIETIES." American Journal of Agriculture and Biomedical Engineering 05, no. 01 (2023): 1–7. http://dx.doi.org/10.37547/tajabe/volume05issue01-01.

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Among local and introduced apricot varieties, it is aimed to isolate the varieties with valuable biological and economic properties, and to breed seedlings of the selected variety, to increase apricot groves by selecting varieties suitable for desert regions based on promising drought-resistant high-yielding varieties
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Esanovich, Karshiev Alisher. "SELECTION OF COLD-RESISTANT APRICOT VARIETIES." American Journal of Agriculture and Biomedical Engineering 05, no. 04 (2023): 14–20. http://dx.doi.org/10.37547/tajabe/volume05issue04-02.

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In the article, the adverse effects of winter and early spring cold temperatures on apricot trees are studied in the conditions of the Kashkadarya region of local and imported apricot varieties, and the biological characteristics of apricot varieties resistant to stress factors were isolated as a result of research observations to select promising varieties that are resistant to any weather conditions. and other positive features are listed.
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Santoso, Santoso, Anggiani Nasution, and Nani Yunani. "KERAGAMAN DAN SUMBER GEN KETAHANAN VARIETAS PADI LOKAL TERHADAP PATOGEN Pyricularia grisea PENYEBAB PENYAKIT BLAS." Jurnal Ilmu-Ilmu Pertanian Indonesia 22, no. 2 (2020): 119–28. http://dx.doi.org/10.31186/jipi.22.2.119-128.

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[DIVERSITY AND THE SOURCE OF RESISTANCE GENE OF LOCAL RICE VARIETIES ON THE PATHOGENIC OF Pyricularia grisea CAUSE OF BLAST DISEASE]. Local rice varieties are known to have resistance or source of genes to pests even though their productivity yield is low. The pathogen of Pyricularia grisea is a cause of blast disease, which is one of the obstacles in rice production. The research aims to characterize the resistance of local rice varieties to the pathogen of P. grisea and to evaluate the virulence level of P. grisea pathogens against local rice varieties. A total of 100 local rice varieties and check varieties are susceptible and resistant namely Kencana Bali and Situ Patenggang tested their resistance to 4 dominant pathogenic of P. grisea i.e. races 033, 073, 133 and 173. Inoculation was carried out on stages 4-5 leaves or 18-21 days after seedling in a green house. The results showed a high genetic diversity of local rice varieties against pathogenic races 033, 073, 133 and 173. Based on the response of local rice varieties resistance i.e. moderately resistant (MR), resistant (R) and susceptible (S) to pathogenic races 033, 073 , 133 and 173 obtained 45 resistance response patterns. Cere Bereum varieties which are local rice varieties from West Java and Situ Patenggang resistant check varieties have a resistant response to 4 P. grisea pathogenic races used. A number of local rice varieties also show a resistant and moderately resistant response to the four pathogenic races used include Siam 11, Pare Siriendah, Menyan, Cere Manggu and Enud-Rawa Bogo. Local rice varieties Djedah and Padi Hitam (2) are local rice varieties that have a specific response of resistant or moderately resistant to race 173. Race 133 and 173 have higher virulence rates than those of races 033 and 073 on local rice varieties. The results of this study indicate that there is a great potential for the utilization of local rice varieties, as a source of resistance genes for blast disease for the assembly of rice varieties that are resistant to blast disease.
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Chethana, BS, CA Deepak, and MP Rajanna. "Identification of novel resistance source in traditional varieties against major diseases of rice." Oryza-An International Journal on Rice 57, no. 2 (2020): 116–25. http://dx.doi.org/10.35709/ory.2020.57.2.5.

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Traditional rice varieties maintained and cultivated by farmers are the potential sources of resistant donors that can be used for breeding rice varieties with durable resistance. They possess traits potentially adaptable to a wide range of abiotic and biotic stresses. Characterization of these germplasm is essential in rice breeding varieties and provides valued information for developing new rice. In this study, a large-scale screening of 167 traditional rice varieties was carried out to identify resistance sources against blast, sheath blight and brown spot diseases of rice. The mean location severity index (LSI) of leaf blast, sheath blight and brown spot was 6.91,7.14 and 7.84, respectively. Among the varieties screened, five varieties viz., Malgudi sanna, Putta batta, Selamsanna, Sadaholga and Mysuru sanna showed resistant reaction against blast, while only one variety Putta batta showed resistant reaction against brown spot, none of the varieties showed resistant reaction against sheath blight. However, only one variety Bangara sanna-4 showed moderate resistance to the sheath blight disease. The identified resistant varieties can be used as potential source for breeding durable resistant varieties in the future crop improvement programmes.
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KALORIZOU, H. A., S. R. GOWEN, and T. R. WHEELER. "GENOTYPIC DIFFERENCES IN THE GROWTH OF BANANAS (MUSA SPP.) INFECTED WITH MIGRATORY ENDOPARASITIC NEMATODES. 1. ROOTS." Experimental Agriculture 43, no. 3 (2007): 331–42. http://dx.doi.org/10.1017/s0014479707004978.

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The effects of nematodes on root morphology and the association of root characteristics with resistance to nematodes of seven banana varieties were investigated in two experiments. Banana plants were grown in controlled conditions within polytunnels and harvested on three occasions for the measurement of root morphology and biomass. Varieties differed in their resistance to nematodes, from resistant (Yg Km5, FHIA 17, FHIA 03) and partly resistant (FHIA 01, FHIA 25) to not resistant ((FHIA 23, Williams). Nematodes reduced the root dry weight of FHIA 01, FHIA 17 and FHIA 23 at some harvests. Primary root number was on average 9.5% lower in nematode-infected plants than controls, with no differences among the varieties. Thus, there was no simple association between the resistance of these varieties and their tolerance to nematodes. Varieties differed in root morphology. Root dry weight was greatest for resistant varieties Yg Km5 and FHIA 03, and least for non-resistant varieties FHIA 23 and Williams. Thus, resistance to nematodes was associated with varieties with greater root mass and more and larger primary roots.
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Dreiseitl, A., and P. Pařízek. "Resistance of Spring Barley Varieties to Powdery Mildew in theCzechRepublicin 1971–2000." Czech Journal of Genetics and Plant Breeding 39, No. 2 (2011): 31–44. http://dx.doi.org/10.17221/3718-cjgpb.

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Resistance to powdery mildew of 127 spring barley varieties was evaluated in 702 official variety trials, using scores from 1 to 9. Trials with sufficient disease severity were only analysed. Varieties possessing the resistance genes Mla7 (Elgina), Ml(Kr) (BR-1519), Mla13 (Koral) and mlo (Forum) were among the most resistant ones. The varieties Diamant, HE-3527, HE-3631, II/61-FUDII and Zefir showed high susceptibility. Fifteen varieties, carrying the genes Mla1, Mla3, Mla6, Mla9, Mla13, Ml(Kr) and Ml(Sc), were in the first years of testing highly resistant, but became susceptible later. The score of the most resistant variety ranged each year from 8.05 to 9.00, only in 1987–1991 it was lower. Since the pathogen population rapidly adapted to most resistance genes in the mid eighties, no resistant variety was found in 1987–1989. From 1986 to 1995 on average only 6.6% of the tested varieties were resistant, but there was no variety with resistance score above 8.50. High resistance was typical for varieties possessing an effective major resistance gene. Since the resistance of such varieties was not durable, we recommend breeding of varieties with at least two fully effective resistance genes, using molecular markers.  
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Derova, T. G., N. V. Shishkin, М. М. Ivanisov, and O. S. Kononenko. "Search for sources of resistance to leaf diseases among present winter bread wheat varieties in the southern part of the Rostov region." Grain Economy of Russia 16, no. 3 (2024): 100–106. http://dx.doi.org/10.31367/2079-8725-2024-92-3-100-106.

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The purpose of the current work was to search for sources of winter wheat varieties’ resistance to the most common pathogens of the area under artificial infectious backgrounds and recommend them for inclusion in the breeding process. The study was carried out on the experimental plots of the laboratory for plant immunity and protection of the FSBSI Agricultural Research Center “Donskoy” in 2021–2023. In order to expand the genetic diversity in immunity of newly developed varieties, it is necessary to use new sources of resistance. The objects of study were 78 winter wheat varieties from interstation variety testing, representing various breeding institutions in Russia and some foreign varieties. The study material was presented by the North Caucasian populations of pathogens of such wheat leaf diseases as powdery mildew, brown and yellow rust, and leaf spot (Septoria). Infectious backgrounds were formed according to generally accepted methods, using spore material of pathogens both stored and collected from crops in the previous year (types of rust) and collected from overwintered plants in the spring (powdery mildew, leaf spot). Weather conditions varied across the years of study (mainly in the autumn), but the damage to susceptible test varieties in the experiments was maximum. As a result of the study of the varieties on their resistance to one pathogen, there have been identified 23 varieties resistant to powdery mildew, 56 ones to leaf rust, 47 ones to yellow rust, 8 varieties to leaf spot. There has been given a characteristic of varieties according to various degree of resistance or susceptibility to each pathogen. On the resistance to two pathogens, there have been identified 17 varieties resistant to brown and yellow rust, 2 varieties resistant to brown rust and powdery mildew, 2 varieties resistant to yellow rust and powdery mildew, 1 variety resistant to brown rust and leaf spot. Ten varieties have shown resistance to no one pathogen, but they have had moderate resistance or moderate susceptibility to several other pathogens. 20 varieties were resistant to three diseases in various combinations, and 16 of them were resistant to brown, yellow rust, and powdery mildew. One variety ‘MV Nador’ from Hungary showed resistance to all 4 pathogens. All resistant varieties identified in the study can replenish the supply of winter wheat sources to the complex of leaf diseases for breeding purposes or be used in integrated crop protection against leaf diseases.
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Kononenko, O. S., N. V. Shishkin, P. I. Kostylev, and N. T. Kupreishvili. "Search for sources of winter common wheat resistance to septoria (Zymoseptoria tritici) by field and laboratory methods." Grain Economy of Russia 17, no. 2 (2025): 80–85. https://doi.org/10.31367/2079-8725-2025-97-2-80-85.

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In order to develop highly productive winter common wheat varieties, it is necessary to pay attention not only to the state of the agrophytocenosis, but also to include disease-resistant plants in the breeding process. One of the most common diseases in Russia, including the Rostov region, is septoria (Zymoseptoria tritici). Varieties and samples with several septoria resistant genes are of great importance for breeding. Therefore, it is necessary to search for breeding material resistant to Zymoseptoria tritici to develop new resistant winter common wheat varieties. The purpose of the current study was to identify septoria resistant winter common wheat varieties and samples using PCR diagnostics. The study was conducted at the FSBSI “Agricultural Research Center “Donskoy” (FSBSI “ARC “Donskoy”) in 2020–2022. Against the infectious background during the years of study, there were conducted the field estimation of 35 winter common wheat samples for Z. tritici resistance. The largest number of winter common wheat varieties resistant to Z. tritici with 14.4% damage was established in 2022, these were 5 varieties ‘Matriks’, ‘Univer’, ‘Krasa Dona’, ‘Gomer’ (Russia), ‘KVS-Emil’ (Germany). In 2020, only one variety ‘Astarta’ (Ukraine) showed resistance with 15–20 % damage. In 2021, there were identified 3 resistant varieties (8.6 %) ‘SO-911’ (France) with 10–15 % damage, ‘KVS-Emil’ (Germany) and ‘Batya’ (Russia) with 15–20 % damage. The screening of 35 winter common wheat samples has shown the presence of the dominant resistance gene Stb4 in the varieties ‘XE-9710’ (France), ‘Matriks’, ‘Krasa Dona’, ‘Volny Don’, ‘Univer’ (FSBSI “ARC “Donskoy”, Russia), ‘KWS-Emil’ (KWS Lochow GMBH, Germany). As a result, there have been identified the varieties ‘Matriks’, ‘Univer’, ‘KVS-Emil’, ‘XE-9710’, which showed themselves to be moderately resistant and stable over the years; the resistance of these varieties was also confirmed by laboratory methods. The identified varieties are recommended for further study and use in the breeding process.
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Hrytsiuk, N. "Resistance of winter wheat varieties to root rots causative agents against artificial infection." Interdepartmental Thematic Scientific Collection of Phytosanitary safety, no. 69 (March 14, 2024): 52–61. https://doi.org/10.36495/phss.2023.69.52-61.

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Goal. The study of the varieties of domestic and foreign selection of winter wheat for resistance to the main pathogens of root rot (Fusarium graminearum and Bipolaris sorokiniana) and the determination of their harmfulness. Methods. Laboratory method — for the isolation of pathogens in pure culture, for artificial infection with pathogens of root rot, for the determination of growth parameters of winter wheat; dispersive, statistical and regressive methods for the reliability of the obtained results. Results. The agressiveness and the virulence of the main causative agents of winter wheat root rot under artificial seed infection have been established. The assessment of the resistance of winter wheat varieties to Fusarium and Helminthosporium root rot was carried out, the development of the disease in relatively resistant varieties ranged from 0.1 to 0.9 points, the spread was 10.0—45.5%; the development of weak–resistant varieties was 1.0—1.2 points, prevalence of 40.9—50.0%; the developmen tof susceptible varieties was 1.7—2.23 points, spreading — 71.8—94.0%. The harmfulness of Fesarium graminearum and Bipolaris sorokiniana on seedling and root length was studied. In susceptible to Fusarium rot varieties of Novosmuglianka, Poliska 90, Lisova Pisnia, the seedling length was reduced by 5.7—6.9 cm, the root length was reduced by 2.51—3.21 cm compared to relatively resistant Samurai varieties. Conclusions. The most common types of root rot in Zhytomyr region are Fusarium and Helminthosporous root rot. No root rot resistant varieties of winter wheat were found among the research varieties, but relatively resistant and weak-resistant varieties were selected. For sowing on agricultural enterprises, relatively resistant to Fusarium graminearum and Bipolaris sorokiniana varieties of Samurai, Kraievyd, Podolianka, Scagen can be recommended. Weak-resistant to Fusariosis can be recommended Bohemia, Podarunok Podillia varieties and weak-resistant to helminth sporiasis can be recommended Poliska 90. In protection of winter wheat crops from harmful organisms, the correct selection of varieties plays a special role, therefore, when developing the integrated protection technology, special attention should be paid to the varieties that show resistance to certain diseases and types of pathogens.
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Dissertations / Theses on the topic "Resistant varieties"

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Khalequzzaman, Mohammad. "Development of drought resistant varieties of rice (Oryza sativa L.) through in vitro hybridization." Thesis, University of Southampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288150.

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Ebong, Cyprian. "The nutritional effects of tannins and related polyphenols in bird resistant and non-bird resistant sorghum varieties and in legume browses." Thesis, University of Aberdeen, 1989. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU545401.

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Large amounts of cereal straws are produced in Africa every year. The straw is a potentially valuable source of energy for ruminant livestock. The quality of some straws, notably bird resistant sorghum varieties, are very low (Reed et al . 1987) and may need treatment prior to feeding to the animals. Since physical treatments are often expensive and technically unsuitable for small farming conditions, proven chemical methods could be employed wherever they are technically and economically feasible. Supplementation for deficient nutrients is an alternative approach to improve the utilisation of the straws. Energy and N contents in legume fodder crops and browses make them attractive alternatives to expensive concentrates as supplements for poor quality straws. But often the intake and digestibility of these legumes including browses are reduced by the contents of polyphenolic compounds including tannins (Van Hoven, 1984). These compounds may also reduce digestibility of sorghum stover (Reed et al. 1987). Despite the adverse effects on intake and digestibility tannins protect proteins from degradation by rumen microorganisms and improve the quality of amino acids absorbed in the postrumen gut (Waghorn et al., 1987). They also promote metabolism of endogenous N in the digestive tract (Barry and Manley, 1984). At certain levels of tannins (&'60 10&'37) favourable effects on animal performance can be realised (Ehohe et al, 1981). However it has been noted that large faecal N excretions in ruminants are invariably associated with consumption of high amounts of tannins in the diet. Noting the complexity of the polyphenol-protein interactions it is anticipated that some of the protected proteins may not be available to the digestive enzymes in the postrumen gut as it is often anticipated. The first experiment was therefore concerned with polyphenols in bird resistant and non-bird resistant sorghum leaves and stems; and with their relationship with cell wall (NDF), NDF digestibility and digestible organic matter concentration, before and after alkali treatment. Out of all the alkali treatments conventionally used to improve digestibility in straws urea was not anticipated to be an effective treatment for sorghum stovers that contain high levels of tannins and related polyphenols. These compounds may inhibit urease activity and reduce the production and release of ammonia from urea (Lohan et al., 1981).
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Aguiar, Elisabete Cristina Fonseca. "Study of rice varieties: chemical and nutritional facts." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/21566.

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Mestrado em Biotecnologia - Biotecnologia Alimentar<br>Este estágio curricular foi desenvolvido em parceria com a Novarroz – Produtos Alimentares, S.A., uma empresa familiar cuja atividade principal é o processamento e comercialização de arroz e dos seus subprodutos. O arroz (Oryza sativa) é uma das mais importantes culturas de cereais e é consumido por 60% da população mundial, sendo uma das principais fontes de nutrientes e energia. Desta forma, o conhecimento da composição das variedades de arroz é de total importância para a Novarroz, Produtos Alimentares, S.A. Assim, este trabalho englobou dois objetivos principais. O primeiro objetivo consistiu na caraterização de 23 amostras de arroz branqueado da nova colheita, nomeadamente em termos de caraterísticas físicas dos grãos de arroz, propriedades de gelificação, composição química e nutricional. A determinação das caraterísticas físicas dos grãos de arroz permitiu observar maiores comprimentos e proporções comprimento/largura para as variedades de arroz indica. Foram obtidas correlações elevadas entre estes dois parâmetros. As amostras de arroz japonica mostraram maiores percentagens de área gessada comparando com as variedades indica. Assim, obteve-se uma correlação elevada e positiva entre a brancura total e o kett. O comportamento do amido durante o cozinhamento e arrefecimento foi avaliado através da determinação das viscosidades. Em geral, as viscosidades do pico e rutura foram mais elevadas para as amostras de arroz japonica. Por outro lado, as viscosidades de retrocesso foram superiores para as variedades indica e negativa e fortemente correlacionadas com as viscosidades do pico e de rutura. O conteúdo de amido total variou de 74.79 a 84.45%, em matéria seca. A determinação do conteúdo de amilose atribuiu os maiores valores às variedades indica. Este parâmetro estava fortemente correlacionado com as propriedades de gelificação. O índice glicémico (IG) das amostras de arroz foi determinado. As amostras cuja hidrólise de amido foi mais rápida ao longo do tempo apresentaram valores de IG mais elevados. Indica6 apresentou o menor IG (76.40 ± 1.06) sendo visto como uma variedade de arroz de baixo IG destinada a diabéticos do tipo 2. O IG e o conteúdo de amilose apresentaram uma correlação negativa, estando de acordo com a literatura. O segundo objetivo deste estágio consistiu na germinação de duas amostras de arroz integral: japonica14 G0h e japonica15 G0h. Estas amostras foram germinadas em água da Novarroz (pH = 5.3), a pH = 3.0 e a pH = 4.0 durante 24, 48 e 72 horas, a fim de verificar as alterações bioquímicas que ocorreram durante a germinação, principalmente em termos do conteúdo de ácido gama-aminobutírico (GABA), um aminoácido não proteico que tem sido implicado em muitos benefícios para a saúde. Os conteúdos de amido total e amilose diminuíram significativamente. Como esperado, a hidrólise de amido levou a um aumento do conteúdo de açucares redutores ao longo do tempo. Em geral, o processo de germinação contribuiu para o aumento do IG. Contudo, as amostras germinadas japonica15 G24_5.3, japonica15 G24_3.0 e japonica15 G24_4.0 apresentaram uma diminuição significativa no IG comparando com a amostra japonica15 G0h. Efectivamente foi encontrada uma relação entre o conteúdo de GABA e as condições acídicas da germinação. A germinação a pH = 3.0 levou a um aumento significativo de GABA nos grãos de arroz com o tempo, principalmente nas amostras japonica14: a cada 24 horas, o conteúdo de GABA aumentou significativamente, variando entre 9.27 (0 horas) e 43.63 mg/100 de matéria seca (72 horas), mostrando um aumento de quase 5 vezes em relação à amostra não-germinada japonica14, corroborando estudos anteriores.<br>This traineeship was developed in partnership with Novarroz – Produtos Alimentares, S.A., a familiar company whose major activity is the processing and commercialization of rice and its by-products. Rice (Oryza sativa) is one of the most important cereal crops and it is consumed by 60% of the world’s population, being one of the main sources of nutrients and energy. Thus, the knowledge of the composition of rice varieties is of total importance to Novarroz, Produtos Alimentares, S.A. Therefore, this work comprised two main goals. The first goal consisted in the characterization of 23 milled rice samples from the new harvest, namely in terms of physical characteristics of the rice grains, pasting properties and chemical and nutritional composition. Physical analyses of the rice grains enabled detecting higher length and length-to-width ratio values to indica rice varieties. Strong correlations were found between these parameters. Japonica rice samples showed higher chalky area % compared to indica varieties. Chalky area was strongly and positively correlated with total whiteness and kett. Starch behaviour during cooking and cooling was assessed through the determination of pasting properties. In general, peak and breakdown viscosities were higher for japonica rice samples. These two parameters were found strongly and positively correlated. On the other hand, setback viscosities were higher for indica rice varieties and negatively and strongly correlated with peak and breakdown viscosities. Total starch ranged from 74.79 to 84.45 %, in dry matter. The determination of amylose assigned the highest values to indica varieties. This parameter was strongly correlated with pasting properties. Glycemic index (GI) of rice samples was determined. Samples in which starch hydrolysis was faster over time presented the higher GI values. Indica6 presented the lowest GI (76.40 ± 1.06) being seen as a possible low GI rice variety destined to type 2 diabetic people. A negative correlation was found between glycemic index and amylose content corroborating some literature reports. The second goal of this internship consisted in the germination of two brown rice samples: japonica14 G0h and japonica15 G0h. These samples were germinated in Novarroz’s water (pH = 5.3), pH = 3.0 and pH = 4.0 for 24, 48 and 72 hours in order to assess the biochemical changes occurring during germination, mainly in terms of γ - aminobutyric acid (GABA) content, a non-protein amino acid that has been implicated in many health benefits. A significant decrease was detected in total starch and amylose contents. As expected, starch hydrolysis led to an increase in reducing sugars content over time. In general, the germination process contributed to the increase of the GI. However, japonica15 G24_w, japonica15 G24_3.0 and japonica15 G24_4.0 presented a significant decrease in GI compared to japonica15 G0h. A relation between acid germination conditions and GABA content was effectively detected. Germination at pH = 3.0 led to a significant increase in GABA content in the rice grains over time, mainly in japonica14 samples: each 24 hours, the GABA content increased significantly ranging from 9.27 (at 0 hours) to 43.63 mg/100 dry matter (at 72 hours), showing an increase of almost 5 times in relation to ungerminated japonica14, corroborating previous reports.
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Vadnerkar, Anuya Anant. "Soluble fiber and resistant starch components in some Indian and Canadian wheat varieties and in a wheat-soy product - Chapati." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/10174.

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This study aimed to quantify resistant starch (RS) beta-glucans (BG) and fructo-oligosaccharides (FOS) in Indian and Canadian wheat varieties and in chapaties made from these; and to assess the effects of soy flour on the levels of these components and its effects on the sensory and functional properties of the wheat-soy chapaties. Seven wheat varieties (Indian / Canadian) were milled into flour; supplemented with 0 % (control), 10 %, 20 % or 30 % defatted soy flour and made into chapaties. Flours and chapaties (freeze-dried, pulverized) were assayed for BG, FOS, RS and simple sugars (glucose / sucrose). Sensory evaluation was carried out by (9 point) hedonic rating of chapaties by 20 untrained Indian panelists. Flour water-holding capacity and water absorption indices (WAI) were determined. RS content of flours ranged from 7.1 g/100 g to 12.6 g/100g, but decreased when made into chapaties, (< 1 g/100 g), and decreased further with soy flour addition. BG content in flours ranged from 0.8 g/100 g to 1.4 g/100 g, while FOS content ranged from 1.3 g/100 g to 2.3 g/100 g. Minimal changes were observed in BG and FOS content when made into chapaties. Simple sugars were minimal in flours and chapaties. WAI of wheat flour was increased with addition of soy bean flour. Addition of up to 30 % soybean flour elevated the sensory acceptability of chapaties. While there is a decrease in RS with chapati making, the levels of BG and FOS are largely unchanged with processing.<br>Master of Science
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Marimo, Pricilla. "Gender Impacts of Molecular-Assisted Breeding: The Case of Insect and Disease Resistant Cassava in Nigeria." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/33537.

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Cassava is the main staple crop in Nigeria. Using primary data from four south eastern states in Nigeria, the study assessed the gender impacts of improved cassava varieties. Comparative statistical analysis reveals that total female labor is higher than total male in cassava production, processing and marketing. Women spend more labor days than males for planting, weeding, harvesting, marketing and processing. The total female family labor is higher for adopters of new improved cassava varieties. There is however lower family labor input for both male and female adopters for clearing and plowing which are normally done by men. Significant determinants of female labor supply are number of children in the household, percent of females in the household providing labor on the farm, area under improved cassava varieties and total land area. There is a positive unexpected relationship between total female labor supply and number of children. For each of the decision making variables, there is a significant association between the gender of the spouse and the decision made except for the decision on family labor allocation. Probit results show a significant decrease in the probability that the wife makes the decision for family labor allocation, what inputs to buy and borrowing and traditional cassava income control with adoption. Results indicate that both men and women spend their income on services directly linked to the householdâ s welfare. More than half of the women ranked food as number one.<br>Master of Science
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Yankey, Egya Ndede. "The lethal disease of coconut in Ghana : developing molecular markers and pathogen quantification techniques for the breeding of resistant or tolerant varieties." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/13953/.

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Lethal diseases (LD) of coconut caused by phytoplasmas have destroyed millions of palms globally and pose a serious threat to the coconut industry in Ghana. This study investigated the genetic basis of resistance/tolerance of coconut varieties and hybrids to LD. The study was also aimed at developing molecular markers for cultivar verification to be used for the sustainable breeding of high value varieties and hybrids. Using PCR diagnosis and monitoring of symptoms of LD over a three year period, the study determined that escapee palms of the West African Tall ecotype (WAT) found in LD-devastated fields die once infected and do not represent resistant/tolerant sub-populations. Six monthly observations of symptoms and PCR diagnosis showed that LD-infection and symptom development occurred all year round. Quantification of phytoplasma amounts using novel quantitative real-time PCR methods did not reveal a pattern in pathogen disease titres between the rainy and dry seasons or between plant parts. Due to a lack of LD-infection in the sampled SGDxVrT and MYDxVrT palms, the basis of their resistance/tolerance could not be determined. Out of 44 microsatellites markers assessed for their usefulness in differentiating between the Ghanaian breeding materials, only two of the markers, CnCirC12 and CAC65 initially appeared to be associated with alleles specific for the susceptible 'West Africa Tall' variety but screening with further samples showed these two markers also to not be specific. The study found that palms of each variety did not show consistent genotypes for variety-specific SSR markers to be identified. Diagnostic assays based on the LAMP technique (DNA amplification at a single temperature using Bst polymerase) were assessed for their potential for in-field use. The simplicity of the technique and the rapidity with which results are obtained <30 min) demonstrated that this non-PCR technique could be a future method of choice for field diagnostics in Ghana and in Africa at large. Seeds from LD-infected palms were assessed for their ability to transmit the LD phytoplasma to progeny plants. Out of 105 coconut seedlings derived from LD-infected palms, none was found to be infected or developed LD after six monthly PCR diagnosis for 18 months. This study concludes that LD is unlikely to be seed transmitted and that the DNA fragments detected in coconut embryos may not represent a viable organism
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Paiva, Ana Giselda Simões. "Genotypic and environmental effects on the concentration of healthy compounds of four durum wheat varieties." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15497.

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Mestrado em Biotecnologia - Biotecnologia Alimentar<br>Wheat is one of the most important grain in human diet and it is the most grown cereal crop wordwide. Nowadays since global climatic changes have become more important to food production, we asked whether climatic conditions and genotype would influence the production of healthy compounds on old and new varieties of durum wheat. Resistant starch and phenolic acids were quantified by HPLC techniques to evaluate the environmental and genotypic effects and to characterize four durum wheat species grown in South Italy. Environment had a strong impact on the production of resistant starch and phenolic acids, while genotype had the greastest effect on the same compounds. The production of phenolic acids tended to increase by the effect of winter sowing season and the year 2014 during the grain filling period. Ferulic and sinapic acid were the most abundant in the four varieties. The two new Ethiopian lines were more efficient on the production of phenolic acids and resistant starch, while the old genotype Trinakria and its genetic modified pair showed to be slightly less productive. Wheat based products higher in phenolic acids and resistant starch might lead to a diet richer in bioactive substances that promote health.<br>O trigo é um dos cereais mais importantes na alimentação humana e um dos mais produzidos a nível mundial. No momento em que as alterações climáticas parecem ser cada vez mais importantes na produção de alimentos, foi questionado se as condições climáticas e o genótipo poderiam influenciar a produção de compostos benéficos para a saúde em variedades antigas e novas de trigo duro. O amido resistente e os ácidos fenólicos foram quantificados através de técnicas cromatográficas para avaliar os efeitos ambientais e genotípicos e para caracterizar quatro variedades de trigo duro cultivadas no sul de Itália. O ambiente influenciou a produção de amido resistente e de ácidos fenólicos, enquanto que o genótipo teve o maior impacto nestes. A produção de ácidos fenólicos tendeu a aumentar pelo efeito da estação invernal e do ano 2014 no período de enchimento dos grãos. Os ácidos ferúlico e sinápico foram os mais abundantes nestas variedades. As duas linhas genotípicas Etiopia novas foram as mais eficientes na produção de ácidos fenólicos e amido resistente, enquanto que o genótipo antigo Trinakria e o seu par geneticamente modificado mostraram ser ligeiramente menos produtivos. Pensa-se que os produtos alimentares à base de trigo com um conteúdo de amido resistente e ácidos fenólicos elevado conduzem a uma dieta mais rica em substâncias bioactivas que promovem a saúde humana.
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Ottman, Michael J. "Nondormant Alfalfa Varieties for Arizona 2015." College of Agriculture, University of Arizona (Tucson, AZ), 2015. http://hdl.handle.net/10150/576828.

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Revision of AZ1267<br>2 pp.<br>Alfalfa varieties differ in fall dormancy, defined as growth during the fall. Nondormant alfalfa varieties are usually planted in mild winter areas for their ability to grow in the late fall, winter, and early spring. Select alfalfa varieties that have resistance to potential pest problems. Alfalfa varieties are available that have salt tolerance or are Roundup Ready. Ratings are provided in this publication. Many of the varieties listed in this publication have been tested for yield and final stand by the University of Arizona in small plot trials.
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Ottman, Michael J. "Nondormant alfalfa varieties for Arizona 2016." College of Agriculture, University of Arizona (Tucson, AZ), 2016. http://hdl.handle.net/10150/625420.

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2 pp.<br>Alfalfa varieties differ in fall dormancy, defined as growth during the fall. Nondormant alfalfa varieties are usually planted in mild winter areas for their ability to grow in the late fall, winter, and early spring. Select alfalfa varieties that have resistance to potential pest problems. Alfalfa varieties are available that have salt tolerance or are Roundup Ready. Ratings are provided in this publication. Many of the varieties listed in this publication have been tested for yield and final stand by the University of Arizona in small plot trials. Revised 10/2016. Most recent version 09/2015
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Baqui, M. A. "Resistance of rice varieties to the brown planthopper Nilaparvata lugens (Stal)." Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370875.

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Books on the topic "Resistant varieties"

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LaMondia, James Arthur. New tobacco cyst nematode resistant shade tobacco varieties. Connecticut Agricultural Experiment Station, 1999.

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LaMondia, James Arthur. New Fusarium wilt-resistant Connecticut broadleaf tobacco varieties. Connecticut Agricultural Experiment Station, 1991.

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LaMondia, James Arthur. New tobacco cyst nematode resistant shade tobacco varieties. Connecticut Agricultural Experiment Station, 1999.

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LaMondia, James Arthur. New Fusarium wilt-resistant Connecticut broadleaf tobacco varieties. Connecticut Agricultural Experiment Station, 1991.

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(Organization), Navdanya, ed. Biopiracy of climate resilient crops: Gene giants steal farmers' innovation of drought resistant, flood resistant & salt resistant varieties. Navdanya, 2009.

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A, Osborne Robert. Hardy roses: An organic guide to growing frost- and disease-resistant varieties. Storey Communications, 1991.

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Korban, S. S. Disease-resistant apple cultivars developed from the apple breeding program at the University of Illinois. Agricultural Experiment Station, College of Agriculture, University of Illinois at Urbana-Champaign, 1990.

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S, Korban S., and Purdue University. Agricultural Experiment Station., eds. Co-op 27, 28, 29, 30, and 31: Five disease-resistant apple selections released for advanced testing. Agricultural Experiment Station, College of Agriculture, University of Illinois at Urbana-Champaign in cooperation with the Agricultural Experiment Station of Purdue University, West Lafayette, Indiana, 1990.

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Ghimire, S. R. Use of fungicides and identification of resistant varieties for the management of bean rust and anthracnose diseases in common beans (1992/93).. Lumle Regional Agricultural Research Centre, 1996.

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Schertz, Willett Lois, and New York State College of Agriculture and Life Sciences. Dept. of Agricultural Economics., eds. Issues in the development and marketing of reduced chemical agricultural products: A look at disease-resistant apple cultivars. Dept. of Agricultural Economics, New York State College of Agriculture and Life Sciences, Cornell University, 1991.

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Book chapters on the topic "Resistant varieties"

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Jamaloddin, Mohammed, Anumalla Mahender, C. Guru Gokulan, et al. "Molecular Approaches for Disease Resistance in Rice." In Rice Improvement. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66530-2_10.

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AbstractRice production needs to be sustained in the coming decades, with changing climatic conditions becoming more conducive to the prevalence of disease outbreaks. Major rice diseases collectively cause enormous economic damage and yield instability. Breeding for disease-resistant rice varieties could be one of the best options to counter these disease outbreaks. Disease-screening protocols and newer technologies are essential for effective phenotyping and would aid in gene discovery and function. Understanding the genetics of disease mechanisms and stacking of broad-spectrum disease-resistance genes could lead to faster development of rice varieties with multiple disease resistance. New molecular breeding approaches are discussed for the development of these varieties. The molecular biology of disease resistance is now better understood and could be well manipulated for improved resilience. Transgenic approaches for disease resistance are discussed. Genome-editing tools for the development of disease-resistant rice varieties are thoroughly discussed. The use of bioinformatics tools to speed up the process and to obtain a better understanding of molecular genetics mechanisms of disease resistance is explained.
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Anand, S. C., R. Cook, and M. F. B. Dale. "Development of resistant and tolerant varieties." In The Cyst Nematodes. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-015-9018-1_12.

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Vaeck, Mark, Arlette Reynaerts, Herman Höfte, and Herman Van Mellaert. "Transgenic Crop Varieties Resistant to Insects." In ACS Symposium Series. American Chemical Society, 1988. http://dx.doi.org/10.1021/bk-1988-0379.ch020.

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Singh, Sanjay Kumar, Satyabrata Pradhan, Hare Krishna, et al. "Development of Abiotic Stress Resistant Grapevine Varieties." In Genomic Designing for Abiotic Stress Resistant Fruit Crops. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-09875-8_4.

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Ndayihanzamaso, Privat, Sheryl Bothma, Diane Mostert, George Mahuku, and Altus Viljoen. "An Optimised Greenhouse Protocol for Screening Banana Plants for Fusarium Wilt Resistance." In Efficient Screening Techniques to Identify Mutants with TR4 Resistance in Banana. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64915-2_5.

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AbstractFusarium wilt, caused by the soil-borne fungus Fusarium oxysporum f. sp. cubense (Foc), is considered one of the most devastating diseases of banana in the world. Effective management of Fusarium wilt is only achieved by planting banana varieties resistant to Foc. Resistant bananas, however, require many years of breeding and field-testing under multiple geographical conditions. Field evaluation is reliable but time consuming and expensive. Small plant screening methods are, therefore, needed to speed up the evaluation of banana varieties for Foc resistance. To this end, a small plant screening method for resistance to banana Fusarium wilt is presented. The method proposes the planting of 2- to 3-month-old banana plants in soil amended with 10 g Foc-colonised millet seeds. Rhizome discoloration is then evaluated to rank the disease resistance response. The optimized millet seed technique could be useful in mass screening of newly developed genotypes for resistance to Foc.
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Wu, Weihuai, Xuehui Bai, Kexian Yi, et al. "Mutation Induction in Coffea arabica L. Using in Vivo Grafting and Cuttings." In Mutation Breeding in Coffee with Special Reference to Leaf Rust. Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-67273-0_11.

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AbstractCoffee leaf rust (CLR) caused by the obligate parasite, the biotrophic Hemileia vastatrix Berk. &amp; Broome (Basidiomycetes: Pucciniales), is the most devastating disease of Coffea arabica L. Breeding resistant varieties is one of the most economic and environment friendly means to control the disease. However, this is challenged by the loss of resistance after a short period in commercial production. Catimor CIFC7963, an elite, leaf rust resistant Coffea arabica L. variety, has been cultivated in China for decades, which has resulted in the breakdown of its disease resistance. Due to the lengthy breeding process of coffee, the development of new resistant varieties is arduous. Physical and chemical mutagenesis offers an alternative means to more rapidly create novel and beneficial genetic variations. Bud grafting is a propagation technique frequently used for woody plants whereby a bud of one plant is attached to the rootstock of another plant. Likewise, cutting is a frequently used propagation technique. In coffee, physical irradiation of the bud followed by grafting or cutting can accelerate the mutation breeding process, as cutting or grafting increases the growth rate without affecting the major traits of the background varieties. Here, we present protocols to induce mutations on buds of the C. arabica variety Catimor CIFC7963 by gamma-ray irradiation and their subsequent propagation through cutting or bud grafting.
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Martínez-García, Pedro J., Ossama Kodad, Hassouna Gouta, et al. "Genomic Designing for Drought Tolerant Almond Varieties." In Genomic Designing for Abiotic Stress Resistant Fruit Crops. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-09875-8_5.

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Tadesse, Wuletaw, Marion Harris, Leonardo A. Crespo-Herrera, Body Mori, Zakaria Kehel, and Mustapha El Bouhssini. "Insect Resistance." In Wheat Improvement. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-90673-3_20.

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AbstractStudies to-date have shown the availability of enough genetic diversity in the wheat genetic resources (land races, wild relatives, cultivars, etc.) for resistance to the most economically important insect pests such as Hessian fly, Russian wheat aphid, greenbug, and Sun pest. Many R genes – including 37 genes for Hessian fly, 11 genes for Russian wheat aphid and 15 genes for greenbug – have been identified from these genetic resources. Some of these genes have been deployed singly or in combination with other genes in the breeding programs to develop high yielding varieties with resistance to insects. Deployment of resistant varieties with other integrated management measures plays key role for the control of wheat insect pests.
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Bakshi, Suman, Johar Singh, and Sanjay J. Jambhulkar. "Isolation and characterization of yellow rust resistant mutants in wheat." In Mutation breeding, genetic diversity and crop adaptation to climate change. CABI, 2021. http://dx.doi.org/10.1079/9781789249095.0010.

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Abstract Stripe rust, also known as yellow rust, caused by Puccinia striiformis f. sp. tritici (Pst), is a major threat to wheat production leading to yield losses up to 84%. Due to climate change, new races of the yellow rust pathogen are appearing for which no durable source of resistance has been observed in the present high-yielding varieties. A mutation breeding programme was initiated in two popular varieties, namely PBW343 and HD2967, using gamma-ray and electron beam irradiation. Gamma-ray doses of 250, 300 and 350 Gy and electron beam doses of 150, 200 and 250 Gy were used for seed irradiation. The M<sub>2</sub> population was screened in the field from seedling to adult plant stage by spraying a mixture of urediniospores of Pst pathotypes. Disease severity was recorded as the percentage of leaf area covered by the rust pathogen following a modified Cobb's scale. A total of 52 putative yellow rust resistant mutants in HD2967 and 63 in PBW343 were isolated. The number of mutants was higher in the electron beam irradiated population compared with gamma-rays. The absence of sporulation and spore production of the rust pathogen on the mutants indicated resistance. Mutant plants showing seedling resistance also showed resistance at adult plant stage. Seed yield and its contributing characters were better in the mutants compared with the parents. These rust resistant mutants could be novel sources of stripe rust or yellow rust resistance. The plant-to-row progenies of these mutants were confirmed and characterized in the M<sub>3</sub> generation.
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Imbe, T., H. Tsunematsu, H. Kato, and G. S. Khush. "Genetic Analysis of Blast Resistance in IR Varieties and Resistant Breeding Strategy." In Advances in Rice Blast Research. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9430-1_1.

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Conference papers on the topic "Resistant varieties"

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Rebello, Adline Siona, Manikanth Karnati, Indira Govindaraju, AS Bharath Prasad, B. Nandana, and Nirmal Mazumder. "Spectroscopic and Microscopic Analysis of Rice Varieties: Physico-Chemical Characteristics, Nutraceutical Potential, and Impact on Gut Microbiome." In Frontiers in Optics. Optica Publishing Group, 2024. https://doi.org/10.1364/fio.2024.jd4a.23.

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This study characterizes Karnataka rice varieties' amylose and resistant starch content followed by microscopy and spectroscopy analysis, selecting a rice variety for its high resistant starch for in vivo analysis on Sprague-Dawley rats' gut microbiota.
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Lamb, John A., Mark W. Bredhoeft, and Steven R. Roehl. "Are rhizomania resistant sugarbeet varieties nitrogen hogs." In American Society of Sugar Beet Technologist. ASSBT, 2007. http://dx.doi.org/10.5274/assbt.2007.9.

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"Microbiome, disease-resistant varieties, and wine quality." In Short communications - Oenology, methods of analysis. International Viticulture and Enology Society, 2024. https://doi.org/10.58233/d4acq14t.

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Detsyna, A. A., I. V. Illarionova, V. I. Khatnyansky, and V. O. Shcherbinina. "HERBICIDE-RESISTANT CONFECTIONERY SUNFLOWER VARIETIES OF VNIIMK BREEDING." In Sustainable Agricultural Development in a Changing Climate. Federal Scientific Rice Centre, 2023. http://dx.doi.org/10.33775/conf-2023-42-44.

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Зеля, А., Г. Зеля та Т. Олийник. "Новые ракоустойчивые сорта картофеля – производству". У International Scientific Symposium "Plant Protection – Achievements and Prospects". Institute of Genetics, Physiology and Plant Protection, Republic of Moldova, 2020. http://dx.doi.org/10.53040/9789975347204.80.

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24 varieties of potato were received from three scientific –research and breeding institutions in Ukraine. They were tested during 2016-2019. There were separated 4 varieties resistant to all causative agents of wart: Glazurna, Strumok, Solocha and Chortytsa, 14 are resistant to 11 (Mizhgirya) agent of wart;10 – to 13 (Rachiv);8 - to 18 (Yasynia); 11 – to 22 (Bistrets). The following potato varieties have a complex resistance to wart are recommended for the implementation in disease sources. The breeders are proposed to use them as donors for the wart resistance interbreeding and receiving the resistant posterity.
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Gar'dhuu, Zhamc, N. Surin, S. Gerasimov, A. Sidorov, N. Kozulina, and L. Butkovskaya. "CREATION OF DROUGHT-RESISTANT VARIETIES IN THE SIBERIAN REGION OF THE RUSSIAN FEDERATION, KAZAKHSTAN, MONGOLIA." In The state and problems of agricultural science in Yenisei Siberia. Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS, 2024. http://dx.doi.org/10.52686/9785605087908_33.

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The article highlights the problems of breeding varieties of grain crops for extreme climatic conditions in Siberia, Mongolia and Kazakhstan. One of the main adverse factors is drought, therefore, the creation and cultivation of drought-resistant varieties is especially important. As a result of the work, varieties of grain crops with high adaptability, resistance to drought and other biotic and abiotic factors were identified.
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Tylka, Gregory L. "Using Resistant Soybean Varieties to Manage Soybean Cyst Nematode." In Proceedings of the 16th Annual Integrated Crop Management Conference. Iowa State University, Digital Press, 2006. http://dx.doi.org/10.31274/icm-180809-847.

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Jeon, YA, JH Rhee, JS Sung, HJ Baek, OS Hur, and NY Rho. "Radish germplasm with fusarium wilt-resistance as material for breeding disease-resistant varieties." In GA 2017 – Book of Abstracts. Georg Thieme Verlag KG, 2017. http://dx.doi.org/10.1055/s-0037-1608350.

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Viskotová, Lenka, Martin Tláskal, and Luboš Střelec. "Neighbouring plant varieties problem in the damage resistant alpha design." In INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS (ICNAAM 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5043743.

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Захарова, Мария, Maria Zakharova, Михаил Лукашевич, Mikhail Lukashevich, Татьяна Свириденко, and Tatyana Sviridenko. "DEVELOPMENT OF WHITE LUPIN VARIETIES WITH IMPROVED DROUGHT RESISTANCE." In Multifunctional adaptive feed production. Federal Williams Research Center of Forage Production and Agroecology, 2019. http://dx.doi.org/10.33814/mak-2019-21-69-15-19.

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The article presents the estimation of white lupin breeding material for drought resistance at seed growing in the osmotic — sucrose solution. Promising drought resistant lines with a set of economic-and-biological characters have been selected. The varieties Mitchurinskiy and Piligrim have been developed on its base and are listed in the State List of Agricultural Achievements.
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Reports on the topic "Resistant varieties"

1

Tylka, Gregory, and Mark Mullaney. Soybean cyst nematode-resistant soybean varieties for Iowa. Iowa State University Extension and Outreach, 2021. http://dx.doi.org/10.37578/onka5947.

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Tylka, Gregory L., Gregory D. Gebhart, Christopher C. Marett, Mark P. Mullaney, and Stith N. Wiggs. Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode. Iowa State University, Digital Repository, 2011. http://dx.doi.org/10.31274/farmprogressreports-180814-1142.

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Tylka, Gregory L., Gregory D. Gebhart, Christopher C. Marett, and Mark P. Mullaney. Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode. Iowa State University, Digital Repository, 2012. http://dx.doi.org/10.31274/farmprogressreports-180814-2599.

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Tylka, Gregory L., Gregory D. Gebhart, and Christopher C. Marett. Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode. Iowa State University, Digital Repository, 2010. http://dx.doi.org/10.31274/farmprogressreports-180814-569.

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Mueller, Daren S., Nathan R. Bestor, and Kenneth T. Pecinovsky. Effects of Headline® on Soybean Aphid Resistant and Susceptible Varieties. Iowa State University, Digital Repository, 2012. http://dx.doi.org/10.31274/farmprogressreports-180814-1162.

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Tylka, Gregory L., Gregory D. Gebhart, and Christopher C. Marett. Northern Iowa Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode—2003. Iowa State University, Digital Repository, 2004. http://dx.doi.org/10.31274/farmprogressreports-180814-2193.

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Tylka, Gregory, Gregory Gebhart, Christopher Marett, and Mark Mullaney. Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode in Iowa - 2021. Iowa State University Extension and Outreach, 2021. http://dx.doi.org/10.37578/udsp9793.

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Tylka, Gregory L., Gregory D. Gebhart, and Christopher C. Marett. Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode in Southeast Iowa, 2000. Iowa State University, Digital Repository, 2001. http://dx.doi.org/10.31274/farmprogressreports-180814-927.

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Tylka, Gregory L., Gregory D. Gebhart, and Christopher C. Marett. Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode in Northern Iowa, 2000. Iowa State University, Digital Repository, 2001. http://dx.doi.org/10.31274/farmprogressreports-180814-948.

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Tylka, Gregory L., Gregory D. Gebhart, and Christopher C. Marett. Evaluation of Soybean Varieties Resistant to Soybean Cyst Nematode in Northern Iowa in 2002. Iowa State University, Digital Repository, 2003. http://dx.doi.org/10.31274/farmprogressreports-180814-2656.

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