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Journal articles on the topic 'Cluster varieties'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Montagnon, C., A. Mahyoub, W. Solano, and F. Sheibani. "Unveiling a unique genetic diversity of cultivated Coffea arabica L. in its main domestication center: Yemen." Genetic Resources and Crop Evolution 68, no. 6 (2021): 2411–22. http://dx.doi.org/10.1007/s10722-021-01139-y.

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AbstractWhilst it is established that almost all cultivated coffee (Coffea arabica L.) varieties originated in Yemen after some coffee seeds were introduced into Yemen from neighboring Ethiopia, the actual coffee genetic diversity in Yemen and its significance to the coffee world had never been explored. We observed five genetic clusters. The first cluster, which we named the Ethiopian-Only (EO) cluster, was made up exclusively of the Ethiopian accessions. This cluster was clearly separated from the Yemen and cultivated varieties clusters, hence confirming the genetic distance between wild Eth

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2

Samal, S., G. R. Rout, and P. C. Lenka. "Analysis of genetic relationships between populations of cashew (Anacardium occidentale L.) by using morphological characterisation and RAPD markers." Plant, Soil and Environment 49, No. 4 (2011): 176–82. http://dx.doi.org/10.17221/4110-pse.

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In the present paper genetic relationships of twenty varieties of cashew are described on the basis of morphological characters and RAPD (Randomly Amplified Polymorphic DNA) markers. Results obtained for the phenotypic characters based on similarity coefficient were divided into four clusters with 70% similarity. By means of similarity coefficients (SG), cluster I&nbsp;was found to consist of twelve varieties. Cluster II consisted of a&nbsp;single variety, NRCC-1, cluster III consisted of six varieties and cluster IV had only one variety, Vridhachalam-2. The analysis started by using R

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3

Mallick, Sharmila Rani, AKM Quamruzzaman, Md Altaf Hossain, M. Mizanur Rahman, Md Azizul Hoque, and Md Rafiqul Islam. "Diversity of Potato Varieties in Bangladesh." European Journal of Agriculture and Food Sciences 3, no. 3 (2021): 56–61. http://dx.doi.org/10.24018/ejfood.2021.3.3.281.

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A study based on completely randomized design with three replications was carried out at Tuber Crops Research Centre (TCRC), Bangladesh Agricultural Research Institute (BARI), Gazipur with a view to evaluating and classifying agro-morphological traits in 12 potato varieties to enumerating the genetic diversity. Discriminant function analysis (DFA) was done to determine the set of discriminatory functions contributed to separating 12 potato varieties into four distinct clusters. Discriminant function analysis showed that, function 1 explained 78.21% and function 2 explained 21.79% of total vari

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Weerasinghe, Deepika Priyadarshani. "Evaluation of Morphological Variations in Exotic Rice (Oryza Sativa L.) Genetic Materials under Sri Lankan Field Conditions." New Countryside 1, no. 2 (2022): 16–22. http://dx.doi.org/10.55121/nc.v1i2.32.

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To evaluate genetic diversity of 64 rice germplasms with five local check varieties, an experiment was conducted as the randomized complete block design with two replicates. It was conducted in experimental field of the Regional Rice Research and Development Center, Bombuwela, Sri Lanka. There were five morphological characters such as plant height, days to flowering, days to maturity, grain yield and the phenotypic acceptability of varieties were evaluated. As the results analysis of variance showed there is a significant difference among genotypes of all the tested characters. A total of fou

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Utami, Dwinita W. "BAYESIAN CLUSTERING OF INDONESIAN RICE GERMPLASM." Informatika Pertanian 24, no. 2 (2016): 133. http://dx.doi.org/10.21082/ip.v24n2.2015.p133-140.

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Model-based clustering where the inference on the parameters follow the Bayesian principle has been used to cluster 467 accessions of Indonesian rice germplasm which consist of released varieties, landraces, introduction lines, improved lines and wild species. A model-based Bayesian cluster analysis of genotype data can be used to evaluate the genetic backgrounds of rice populations of interest. Such analyses can be used to infer population structure, assign individuals to sub populations, and to study hybrid populations. Thus, the goal of this research was to examine the genotype data of nume

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Dobreva, Tsvetelina. "Study of drought tolerance of winter oat varieties." Agricultural Sciences 15, no. 39 (2023): 45–50. http://dx.doi.org/10.22620/agrisci.2023.39.004.

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This research was conducted during the period 2019-2021 at the Institute of Agriculture in Karnobat, Bulgaria. In order to establish suitable parents for a selection of drought resistant varieties, twelve accessions of introduced winter oats were studied. The genetic similarity and distance of the accessions was determined by means of cluster analysis. The highest drought resistance was exhibited by varieties Lustre, Image, Westfinnischer Schwarz, Powys, Lee and Fulghum . A good combination of drought resistance, grain weight per spike and 1000-grain weight was found for Lustre, Image and the

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7

Hasan, Mehfuz, and Mohammad Sharif Raihan. "Genetic Variability in Bangladeshi Aromatic Rice through RAPD Analysis." Turkish Journal of Agriculture - Food Science and Technology 3, no. 3 (2014): 107. http://dx.doi.org/10.24925/turjaf.v3i3.107-111.210.

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Genetic polymorphism and relationships among 30 commercial varieties of Bangladeshi aromatic rice (Oryza sativa L.) were established using random amplified polymorphic DNA (RAPD) primers. Out of fifty 10-mer RAPD primers screened initially, four were chosen and used in a comparative analysis of different varieties of indigenous Bangladeshi aromatic rice. Of the 33 total RAPD fragments amplified, 7 (21.21%) were found to be shared by individuals of all eight varieties. The remaining 26 fragments were found to be polymorphic (78.79%). Pair-wise estimates of similarity ranged from 0.101 to 0.911.

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8

Bilyavska, L., and A. Rybalchenko. "Cluster analysis in soybean varieties classification by economic characteristics." Agrobìologìâ, no. 2(161) (November 24, 2020): 7–15. http://dx.doi.org/10.33245/2310-9270-2020-161-2-7-15.

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The aim of the study was to improve the method of soybean collection material assessment with the purpose of choosing pairs for hybridization using cluster analysis, to cluster samples according to the duration of growing period, plant height, the height of lower pod attachment, stem thickness in the lower part, the number of branches and productive joints on a plant, the number of pods and seeds per plant, the number of seeds in a pod, seed weight per plant, yield (g/m2 ), and the resistance to lodging and bean cracking. Based on the conducted cluster analysis of one hundred and forty-five so

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Costa, Marcia Oliveira, Livia Santos Capel, Carlos Maldonado, Freddy Mora, Claudete Aparecida Mangolin, and Maria de Fátima Pires da Silva Machado. "High genetic differentiation of grapevine rootstock varieties determined by molecular markers and artificial neural networks." Acta Scientiarum. Agronomy 42 (September 20, 2019): e43475. http://dx.doi.org/10.4025/actasciagron.v42i1.43475.

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The genetic differentiation of grapevine rootstock varieties was inferred by the Artificial Neural Network approach based on the Self-Organizing Map algorithm. A combination of RAPD and SSR molecular markers, yielding polymorphic informative loci, was used to determine the genetic characterization among the rootstock varieties 420-A, Schwarzmann, IAC-766 Campinas, Traviú, Kober 5BB, and IAC-572 Jales. A neural network algorithm, based on allelic frequency, showed that the individual grapevine rootstocks (n = 64) were grouped into three genetically differentiated clusters. Cluster 1 included on

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Pavlenko, Anna, Maria Dolzhikova, Anna Pikunova, and Annastasiya Bakhotskaya. "Use of SSR markers to study genetic polymorphism in members of the Ribes L. genus from the VNIISPK collection." E3S Web of Conferences 254 (2021): 02009. http://dx.doi.org/10.1051/e3sconf/202125402009.

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This study was the first time in Russia to carry out a large-scale (127 samples) assessment of the diverse gene pool of black currant and red currant, the study of intervarietal polymorphism between varieties of the Ribes L. genus from the VNIISPK collection. A cluster analysis of the genetic similarity of black currant varieties (53 varieties), red currant (73 varieties) and one gooseberry variety was performed using 14 SSR markers. Based on the data obtained, a dendrogram was built, in which a number of clusters with high bootstrap support (BS, %) were distinguished. At BS>50%, the coeffi

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11

Bossinger, Lara, Bosco Frías-Medina, Timothy Magee, and Alfredo Nájera Chávez. "Toric degenerations of cluster varieties and cluster duality." Compositio Mathematica 156, no. 10 (2020): 2149–206. http://dx.doi.org/10.1112/s0010437x2000740x.

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We introduce the notion of a $Y$-pattern with coefficients and its geometric counterpart: an $\mathcal {X}$-cluster variety with coefficients. We use these constructions to build a flat degeneration of every skew-symmetrizable specially completed $\mathcal {X}$-cluster variety $\widehat {\mathcal {X} }$ to the toric variety associated to its g-fan. Moreover, we show that the fibers of this family are stratified in a natural way, with strata the specially completed $\mathcal {X}$-varieties encoded by $\operatorname {Star}(\tau )$ for each cone $\tau$ of the $\mathbf {g}$-fan. These strata degen

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Melaku, Anteneh Bekele, Wassu Mohamed, and Vasantha Kumar. "Genetic Diversity of Indigenous and Exotic Okra [Abelmoschus esculentus (L.) Moench] Genotypes at Dire Dawa, Eastern Ethiopia." Turkish Journal of Agriculture - Food Science and Technology 10, no. 6 (2022): 997–1005. http://dx.doi.org/10.24925/turjaf.v10i6.997-1005.4719.

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Ethiopia is considered as the possible origin and center of diversity for okra. Therefore, this study was conducted with the objectives of determining the genetic distance between indigenous okra collections and exotic commercial varieties and assessing genetic diversity of okra genotypes. The field experiment was conducted at Dire Dawa in 2016 using 14 indigenous collections and 11 exotic varieties in 5 x 5 triple lattice design. Data were collected on 9 and 29 qualitative and quantitative traits, respectively. The genetic distance measured by Euclidean distance ranged from 3.1 to 12.6 with a

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13

G, Shobha Rani, Radhika K, Ravindra Babu V, Padma V, and Usharani G. "Genetic Diversity Studies in Popular Rice (Oryza Sativa L.) Varieties of India." Madras Agricultural Journal 99, September (2012): 468–70. http://dx.doi.org/10.29321/maj.10.100115.

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The success of any breeding programme depends upon the selection of suitable parents for developing elite recombinants. The eighty seven popular rice varieties of India were grouped into ten clusters using Mahalanobis D 2 statistics which revealed the presence of substantial diversity among the genotypes. The characters viz., kernel length, protein content, days to 50 per cent flowering, 100-grain weight, kernel breadth, single plant yield, plant height, number of grains per panicle and L/B ratio contributed maximum towards divergence. Maximum intra cluster distance was observed in cluster X.

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14

Rahman, M. M., A. K. M. Shamsuddin, U. Asad, and M. N. Islam. "GENETIC DIVERGENCE IN DOUBLED HAPLOID LINES OF SPRING WHEAT (Triticum aestivum L.)." Bangladesh Journal of Plant Breeding and Genetics 20, no. 2 (2007): 37–41. http://dx.doi.org/10.3329/bjpbg.v20i2.17034.

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Genetic divergence of 17 doubled haploid lines and 3 check varieties of spring wheat were assessed through Mahalanobis D2-statistics. The genotypes were grouped into six clusters. The clusters I and III contained the highest number of lines (5). The cluster V contained single genotype. The maximum inter-cluster distance was noticed between the clusters I and V and minimum between III and VI. The highest intra-cluster distance was observed in the cluster IV and lowest in the cluster V.DOI: http://dx.doi.org/10.3329/bjpbg.v20i2.17034

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15

Nakajima, Hiraku. "Quiver varieties and cluster algebras." Kyoto Journal of Mathematics 51, no. 1 (2011): 71–126. http://dx.doi.org/10.1215/0023608x-2010-021.

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16

Fock, V. V., and A. B. Goncharov. "Cluster Poisson varieties at infinity." Selecta Mathematica 22, no. 4 (2016): 2569–89. http://dx.doi.org/10.1007/s00029-016-0282-6.

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17

Shende, Vivek, David Treumann, Harold Williams, and Eric Zaslow. "Cluster varieties from Legendrian knots." Duke Mathematical Journal 168, no. 15 (2019): 2801–71. http://dx.doi.org/10.1215/00127094-2019-0027.

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18

R.C, MISRA. "MULTIVARIATE ANALYSIS OF GENETIC DIVERGENCE IN BLACKGRAM." Madras Agricultural Journal 73, june (1986): 317–20. http://dx.doi.org/10.29321/maj.10.a02275.

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Twentyfour geographically diverse blackgram (Vigna mungo (L) Hepper) varieties were grouped into nine clusters on the basis of multivariate analysis for nine yield traits. Characters like yield, pods/plant, plant height, seed weight and days to maturity were found to contribute much to the genetic divergence in blackgram. The genetic clustering pattern revealed the absence of parallelism between geogra- phic and genetic diversity. Inter-cluster distances and mean cluster character values indicated that hybridization of cluster lil varieties (LBG 295, LBG-296, UG-135) with cluster-VIII variety

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19

Kole, Pravas Ranjan, Manoj Kumar Sharma, Sanjay Kumar, and Rakesh Kumar. "Genetic diversity assessment in Indian cultivated pea (Pisum sativum L.) varieties using RAPD markers." Journal of Applied and Natural Science 7, no. 1 (2015): 316–23. http://dx.doi.org/10.31018/jans.v7i1.608.

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In the present study, the genetic diversity and inter-relationships among 12 varieties of pea were analyzed by using RAPD markers. A total of 118 bands were generated with 20 RAPD primers, of which 107 bands were polymorphic (90.81%). The PIC value ranged from 0.602-0.863 with an average of 0.754. High level of polymorphism and low genetic similarity within pea varieties suggested that they have a high level of genetic diversity. Unique RAPD fragments (700bp-1500bp) were also observed in five varieties i.e., AP-01, Aparna, Uttra, Rachna and Rachna-1D. In the dendrogram, 12 varieties were broad

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20

Donina, Olga Valer’evna. "Data Mining Methods to Compare Englishes." Proceedings of the Institute for System Programming of the RAS 34, no. 5 (2022): 163–70. http://dx.doi.org/10.15514/ispras-2022-34(5)-10.

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The paper presents the results of the corpus-based research of noun cryptotypes in 20 varieties of English (Englishes). The data for this research collected from Mark Davies’ corpora GloWbE and NOW enabled us to focus on variation in the covert classification of nouns in modern Englishes. A noun cryptotype introduced by Whorf is approached as ‘a covert type of classification of nouns, marked by lexical selection in a syntactical classifier rather than a morphological tag’. The purpose of the study has been to compare and contrast the covert classification of basic 23 emotions in 20 Englishes (

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Donina, Olga Valer’evna. "Data Mining Methods to Compare Englishes." Proceedings of the Institute for System Programming of the RAS 34, no. 5 (2022): 163–70. http://dx.doi.org/10.15514//ispras-2022-34(5)-10.

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The paper presents the results of the corpus-based research of noun cryptotypes in 20 varieties of English (Englishes). The data for this research collected from Mark Davies’ corpora GloWbE and NOW enabled us to focus on variation in the covert classification of nouns in modern Englishes. A noun cryptotype introduced by Whorf is approached as ‘a covert type of classification of nouns, marked by lexical selection in a syntactical classifier rather than a morphological tag’. The purpose of the study has been to compare and contrast the covert classification of basic 23 emotions in 20 Englishes (

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22

Naik, M. Vinod Kumar, M. Arumugam Pillai, and S. Saravanan. "Genetic Diversity Analysis for Yield Associated and Quality Traits in Promising Rice Varieties of Tamil Nadu." International Journal of Bio-resource and Stress Management 12, no. 5 (2021): 361–69. http://dx.doi.org/10.23910/1.2021.2300.

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An experiment was conducted with 55 rice varieties to assess the genetic diversity by using Mahalanobis D2 Statistical and characterization of genotypes using principal component analysis. All genotypes exhibited a wide and significant variation for 19 traits, by cluster analysis grouped into ten clusters. The maximum genotypes were included in Cluster 6 (16) followed by cluster 4 (10), cluster 3 (8), cluster 2 (7), cluster 5 (5), cluster 8 (4), cluster 1 (2), with 29.09, 18.18, 14.54, 12.72, 9.09, 7.27 and 3.63 proportion respectively, the rest of three clusters had one genotype each. Maximum

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23

Shurhaeva, Kseniya, and Aleksandra Fadeeva. "VARIETIES OF PEAS (PISUM SATIVUM L.) WITH SELECTIONALLY VALUABLE CHARACTERISTICS FOR USE IN BREEDING TO INCREASE PRODUCTIVITY AND PROTEIN CONTENT IN SEEDS." Vestnik of Kazan State Agrarian University 16, no. 3 (2021): 59–66. http://dx.doi.org/10.12737/2073-0462-2021-59-66.

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In order to highlight the sources of economically valuable traits in 2017-2018 years, 131 varieties of pea collection (Pisum sativum L.) were clustered using a hierarchical agglomerative algoritm based on the minimum of Euclidean distanced. Under conditions with sufficient moisture (2017, GTC=1.35) and moisture deficit (2018, GTC=0.76) in two morphological groups different in leaf type, the varieties were combined into clasters according to similar yield values (g/m2), the protein content in seeds (%) and the duration of the growing season (day) from full germinition to economic maturation. In

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Gadakh S. S., Khalekar G. D., Dalvi U. S., Kulwal P. L., Kale A. A., and Shinde M. S. "Molecular Variations in Rabi Sorghum Varieties Using SSR Markers." International Journal of Environment and Climate Change 13, no. 11 (2023): 1350–59. http://dx.doi.org/10.9734/ijecc/2023/v13i113287.

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Genetic diversity was assessed for 2 popular varieties and 5 promising lines of rabi sorghum by using11 SSR markers. The marker Xiabt312 reported 100% polymorphism rate followed by Xtxp15 (85.70%) and mSbCIR300 (85.71%). The sorghum varieties studied for this analysis showed the polymorphism information content (PIC) ranged from 0.25 to 0.87 with a mean of 0.67 indicates higher diversity within them. Clustering analysis based on the genetic dissimilarity grouped the 7 lines into 2 major and 4 sub clusters and grouping was in good agreement with pedigree. Cluster II was the largest cluster with

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DADHEECH, RAMA, R. SHARMA, H. R. MAHLA, and R. K. BHATT. "Plant architecture evolution for higher yields in cluster bean (Cyamopsis tetragonoloba) under arid conditions." Indian Journal of Agricultural Sciences 90, no. 5 (2020): 919–23. http://dx.doi.org/10.56093/ijas.v90i5.104361.

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Cluster bean [Cyamopsis tetragonoloba (L.) Taub] is an annual legume well adapted to limiting soil moisture and wide range of temperature fluctuations. In order to realize the potential of the crop, systematic cluster bean improvement efforts in India were initiated since 1961. Early released varieties were identified through multilocation germplasm testing. Selections, hybridization and mutagenesis have been contributing to recent varieties with more shares emanating from hybridization. Some of the earlier released varieties are still popular with the farmers. The traits responsible for high

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Milišić, Kristina, Tijana Banjanin, Zorica Ranković Vasić, Saša Matijašević, and Rade Jančić. "Yield and cluster charasteristics of grapevine varieties grown in the gene bank of the experimental vineyard Radmilovac (Serbia)." AgroReS 14 (May 23, 2025): 41–47. https://doi.org/10.63356/agrores.2025.005.

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The selection of an appropriate variety is a key factor in achieving desired wine production outcomes. To properly identify and evaluate grapevine varieties, morphological and molecular characterization using appropriate methods is essential. Morphological characterization primarily relies on various types of descriptors, particularly OIV descriptors, which describe the most important organs of the vine, such as shoots, leaves, flowers, clusters, berries, and seeds.The study was conducted over two years at the “Radmilovac” Experimental Estate of the Faculty of Agriculture, University of Belgra

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Kumari, Shruti, S. K. Chakrabarty, Bhowmick Kumar, and Paul Debashis. "Molecular profiling and genetic diversity assessment of rice (Oryza sativa L.) using SSR markers." Genetika 57, no. 1 (2025): 63–75. https://doi.org/10.2298/gensr2501063k.

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Evaluating genetic resources for seed vigour traits is crucial for identifying genotypes and traits suitable for enhanced variety development. Simple sequence repeat (SSR) markers have been undertaken for the evaluation of genetic diversity among 44 Indian rice varieties. Among the 41 SSR markers used, 38 markers were found to be 100% polymorphic and three markers, RM 204, RM 20, and RM 125 were found to be monomorphic for one allele but another allele was polymorphic. Out of a total of 141 alleles detected 138 were polymorphic. The number of alleles per locus varied from 2 to 5 with an averag

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Keranova, N., and V. Roychev. "COMPARATIVE ANALYSIS OF PRODUCTIVITY AND YIELD IN VINE VARIETIES FOR WHITE WINES." Russian Vine 19 (2022): 45–52. http://dx.doi.org/10.32904/2712-8245-2022-19-45-52.

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A comparative analysis of the productivity and yield in 32 vine varieties for white wines has been conducted by applying mathematical methods. Depending on the proximity and re-moteness of the values of these indicators, the studied varieties are grouped into three gener-alized clusters. The first one includes 19 varie-ties characterized by relatively lower values of the percentages of developed buds and fruit-ing shoots, productivity coefficient, yield per vine and per decare. The second cluster con-sists of 11 varieties, characterized by compara-tively higher values of these indicators. Only

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Sadigov-Baykishi, Hamlet. "Gliadin and glutenin polymorphism in durum wheat landraces and breeding varieties of Azerbaijan." Genetika 47, no. 3 (2015): 839–48. http://dx.doi.org/10.2298/gensr1503839s.

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Durum wheat genotypes including 7 landraces and 17 breeding varieties were studied. Polyacrylamide gel electrophoresis under acidic conditions of pH 3.1 was used to study gliadin and glutenin polymorphisms. In total, 32 gliadin and 8 high molecular weight glutenin alleles were identified. The contribution of B genome (58.5%) to the allelic variation of durum wheat varieties was higher than of A genome. The cluster analysis delineated genotypes into four main clusters. According to cluster analysis, legitimacy identifying the distribution of botanical varieties through the tree was observed. Th

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Mahmud, Kuasha, KM Nasiruddin, MA Hossain, and L. Hassan. "Characterization of Induced Sugarcane Somaclones and their Sources Varieties Using Random Amplified Polymorphic DNA." Plant Tissue Culture and Biotechnology 25, no. 2 (2016): 223–29. http://dx.doi.org/10.3329/ptcb.v25i2.26256.

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Sugarcane somaclones and their sources varieties were analyzed by RAPD molecular markers to check the variation at molecular level based on 1.4% agarose gel electrophoresis (AGE). Six RAPD primers generated 237 bands with average 39.5 varied from 15 to 63 with size ranging 145 - 1000 bp among the four sugarcane varieties and their 12 somaclones. Genetic diversity or polymorphism information content (PIC) value ranged from 0.39 to 0.50 for all loci across the 4 varieties and their 12 somaclones based on RAPD markers. Dendrogram based on linkage distance using unweighted pair group method of ari

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Muhammad, Aish, Saima Noor, Iqbal Hussain, et al. "Simple Sequence Repeats-Based Genetic Characterization and Varietal Identification of Potato Varieties Grown in Pakistan." Sustainability 14, no. 18 (2022): 11561. http://dx.doi.org/10.3390/su141811561.

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The potato (Solanum tuberosum L.) is an important cash crop with a complex genome and with features of aneuploidy with a high level of heterozygosity. It is a prerequisite for potato breeding to have knowledge of genetic diversity and population structure. To understand the genetic characteristics of potato cultivars in Pakistan, 25 potato varieties were characterized with simple sequence repeat (SSR) markers to distinguish closely related varieties. In total, 214 alleles were amplified with 35 SSR markers exhibiting 89.2% polymorphism. The maximum number of alleles and polymorphic alleles per

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Jovanović-Cvetković, Tatjana, Vide Šutalo, Muhammed Kupe, Sezai Ercisli, Aleksandar Životić, and Boris Pašalić. "Influence of Interaction Effects of the Different Pollenizers on the Blatina Variety (Vitis vinifera L.) Grape Cluster and Seed Characteristics." Plants 11, no. 3 (2022): 420. http://dx.doi.org/10.3390/plants11030420.

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Indigenous grape varieties represent a significant potential for viticultural diversification. Due to fertilization problems, certain varieties from this group require suitable pollenizers for successful fertilization and in order to achieve high-quality grapes. The study was conducted during the years 2016 and 2017 in the vineyard in Herzegovina (southern part of Bosnia and Herzegovina). The aim of this research is to define a suitable pollenizer for the ‘Blatina’ variety, which has a functionally female flower. Manual pollination was performed with five different pollenizers during the flowe

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Li, Yan, Guo-Fang Pang, Chun-Lin Fan, and Xi Chen. "Hierarchical Cluster Analysis of Matrix Effects on 110 Pesticide Residues in 28 Tea Matrixes." Journal of AOAC INTERNATIONAL 96, no. 6 (2013): 1453–65. http://dx.doi.org/10.5740/jaoacint.12-337.

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Abstract Matrix effects on 110 pesticides in 28 tea matrixes of different varieties and origins by LC/MS/MS were studied, and most of the pesticides exhibited soft and medium signal suppression. To better understand the influence of the tea varieties and the physicochemical characteristics of pesticides on the matrix effects, the multivariate analysis tool called hierarchical cluster analysis was applied. Tea matrixes were grouped into three clusters: unfermented, fermented, and post-fermented teas. Any type of tea can be chosen from each cluster as a corresponding representative matrix within

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杨, 帆. "Cluster Analysis of Red Wine Varieties." Statistics and Application 10, no. 01 (2021): 31–46. http://dx.doi.org/10.12677/sa.2021.101004.

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Thang, Nguyen Ba. "Genetic Divergence of Cultivated Rice Varieties in North Vietnam for Grain Quality Traits Using D2 Cluster Analysis." Vietnam Journal of Agricultural Sciences 5, no. 2 (2022): 1435–44. http://dx.doi.org/10.31817/vjas.2022.5.2.01.

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The study was carried out with twenty-four genotypes of rice during the Spring season, 2020 in Hanoi, Vietnam in order to exploit the attributes and divergence of quality properties from existing rice cultivars in North Vietnam. The rice genotypes were characterized based on ten quality parameters of milling, physical appearance and physiochemical characters using Mahalanobis D2 statistic. D2 analysis allocated the 24 genotypes into eight clusters, of which cluster I was the largest with 12 genotypes. The clustering showed the random distribution of genotypes into different clusters indicating

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H. M. AL-Jaf, Idrees, and Anmar K. Alalwani. "STUDYING THE GENETIC DIVERSITY OF SOME SOLANUM MELONGENA L. VARIETIES USING MOLECULAR TECHNOLOGY." University of Thi-Qar Journal of agricultural research 13, no. 2 (2024): 50–57. https://doi.org/10.54174/tg1as074.

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Using polymerase chain reaction (PCR)- based random amplified polymorphic DNA (RAPD) markers, the study conducted a genetic fingerprinting analysis of ten Eggplant Varieties Solanum melongena L. and measured the percentage of genetic distance. In the biotechnology laboratories of the Seed Inspection and Certification Department, during the fall season of 2024, using 5 primers from RAPD. Polymorphisms were of 74.75% detected among all genotypes, while the percentage of efficiency of each primer was 25.53% for the primer OPC-05, while the maximum discriminatory ability was 25.53% and 31.42% with

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KUMAR, VIJAYA, SUSHIL KUMAR, S. K. CHAKRABARTY, TRILOCHAN MOHAPATRA, and MALAVIKA DADLANI. "Molecular characterization of farmers' varieties of rice (Oryza sativa)." Indian Journal of Agricultural Sciences 85, no. 1 (2015): 118–24. http://dx.doi.org/10.56093/ijas.v85i1.46063.

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A study was carried out for characterization of 60 farmers' varieties using grain characters and 40 SSR (Simple Sequence Repeat) markers. Only a set of 8 (20%) primers were polymorphic yielding 16 bands (alleles) among these 60 varieties. The size of amplicons ranged from 120 bp (RM238) to 240 bp (RM551). The number of alleles per microsatellite ranged from 1 (RM238, RM119 and RM120) to 3 (RM259, RM234 and RM551) with an average of 2 alleles per locus. Major allele frequency ranged from 0.51 to 0.97 averaging 0.74. Genetic diversity ranged from 0.045 to 0.588 with a mean of 0.34. Considering t

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Chandana, Bandela, Adheena Ram A., Seeja G., Surendran M., and Susha S. Thara. "Genetic Diversity Analysis of Rice (Oryza sativa L.) Genotypes for Yield and Sheath Blight Screening." Journal of Advances in Biology & Biotechnology 27, no. 11 (2024): 413–20. http://dx.doi.org/10.9734/jabb/2024/v27i111626.

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Sheath blight disease, caused by Rhizoctonia solani Kühn, is considered the second most important disease affecting rice, causing yield reduction globally. In the present study thirty diverse rice genotypes were inoculated with fungal mycelia during the maximum tillering stage to assess the genetic diversity of rice genotypes for sheath blight reactions. Mahalanobis D2 statistics was performed for grain yield and yield contributing features under sheath blight stress to calculate the genetic divergence between the genotypes. Four clusters were formed from the genotypes. Cluster III has the hig

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Bidhari, Lesty Ayu, Suwarti, Sigit Budi Santoso, Karlina Syahruddin, and Fatmawati. "Identification of high biomass sweet sorghum varieties using multivariate analysis." IOP Conference Series: Earth and Environmental Science 1471, no. 1 (2025): 012028. https://doi.org/10.1088/1755-1315/1471/1/012028.

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Abstract Genotype selection in the development of new sweet sorghum varieties is essential to identify the best accessions for cultivation as new superior varieties. This study aimed to evaluate 55 candidate sweet sorghum accessions based on their agronomic characters, inter-character relationships, and to select key traits for genotype selection. The experiment employed an augmented design within a randomized complete block design with 55 non-replicated test genotypes and five replicated check genotypes. The results revealed that accession 106(1) exhibited the highest biomass weight (854 g pe

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Kholmurodova, Guzal, Gulchekhra Tangirova, Aziza Saidova, Rano Yuldasheva, and Feruza Yusupova. "Cluster analysis on introduced soybean variety specimens." E3S Web of Conferences 563 (2024): 03036. http://dx.doi.org/10.1051/e3sconf/202456303036.

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The research presented in the article includes the analysis of several grapevine varieties, focusing on their resistance to drought. Among the varieties studied are CH27(-266), CH3(-008), and US-44(-641), which were subjected to thorough examination. Additionally, a cluster of varieties including CH28(-268), KO20, CH7(-014), US-14(-382), CH11(-018), and KO18 was identified as being resistant to drought stress. The analysis of these varieties was conducted using cluster dendrogram analysis, which confirmed the findings of previous studies. This method helps to visualize the similarities and dif

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Rahman, M. S., L. Ali, A. Sultana, M. Ruhullah, and M. S. Hossain. "DIVERGENCE ANALYSIS BASED ON YIELD AND YIELD CONTRIBUTING TRAITS OF A COLLECTION OF SPRING WHEAT GENOTYPES (Triticum aestivum L.)." Bangladesh Journal of Plant Breeding and Genetics 28, no. 1 (2015): 17–22. http://dx.doi.org/10.3329/bjpbg.v28i1.27846.

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Genetic diversity among 24 spring wheat genotypes (Varieties/lines) was estimated using Mahalanobis D2-statistics and principal coordinate analysis. The genotypes fell into four clusters of different size. Of the seven different characters spike length and 1000 grain weight had the highest contribution towards the divergence. The highest inter cluster distance was observed between cluster I and III followed by cluster II and III. So, genotypes from the most divergence clusters could be used as parents in hybridization program and are expected to manifest maximum heterosis as well as broad spec

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Rajkumar, Gowri, Jagathpriya Weerasena, Kumudu Fernando, and Athula Liyanage. "Assessment of genetic diversity among Sri Lankan rice varieties by AFLP markers." Plant Genetic Resources 9, no. 2 (2011): 224–28. http://dx.doi.org/10.1017/s1479262111000256.

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Sri Lanka has a valuable repository of germplasm collection due to the availability of a large number of different traditional and improved rice varieties. Molecular techniques can increase the effectiveness of traditional technologies in assessing genetic diversity. Amplified fragment length polymorphism (AFLP) was used to evaluate the genetic diversity among rice varieties available in the germplasm collection of Plant Genetic Resources Centre, Sri Lanka. AFLP analysis of rice varieties using ten different primer combinations yielded a total of 772 polymorphic bands (98.4%). Genetic similari

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Pandey, R. M., and Rekha Singh. "Genetic divergence in grain amaranth (Amaranthus hypochondriacus L.)." Genetika 43, no. 1 (2011): 41–49. http://dx.doi.org/10.2298/gensr1101041p.

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Extent and magnitude of genetic divergence for 14 characters among 98 genotypes of grain amaranth (Amaranthus hypochondriacus L.) were determined for the purpose of identifying more diverse parents which are expected to engender maximum variability. Based on genetic divergence D2 statistics, genotypes were grouped into 18 clusters in which cluster I contained maximum number of genotypes (42), Cluster II (11), Cluster III (7), Cluster IV and V (5 in each case) and Cluster VI has 4 genotypes. Cluster VII, VIII, IX, X have (3 in each), cluster XI, XII, XIII, XIV (2 in each) and clusters XV, XVI,

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Matus, V. M., N. S. Orlenko, O. B. Orlenko, N. V. Pavliuk, and K. M. Mazhuha. "Grouping of sea buckthorn varieties using hierarchical agglomerative cluster analysis." Plant varieties studying and protection 20, no. 4 (2024): 202–10. https://doi.org/10.21498/2518-1017.20.4.2024.321916.

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Purpose. To determine the manifestation of a complex of sea buckthorn (Hipporhae rhamnoides L.) varieties characteristics using cluster analysis for grouping of identifying morphological, qualitative and quantitative economic and valuable characteristics during the test of difference. Methods. Analytical (analysis of the variety database), comparative evaluation of morphological and economically valuable characteristics, mathematical, statistical [using the SPSS package (Statistical Package for the Social Sciences)] Data Mining tools. Results. The frequency analysis of morphological characters

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Tejaswini, Uppuluri, Parashivamurthy, R. Siddaraju, et al. "Characterisation of Tomato (Solanum lycopersicon Mill.) Genotypes for Morphological and Disease Resistance Traits through Cluster Analysis." Journal of Scientific Research and Reports 30, no. 11 (2024): 124–31. http://dx.doi.org/10.9734/jsrr/2024/v30i112540.

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The characterization of germplasm is crucial for breeding and developing improved seed varieties. In this study, seed material was collected from M/s. Noble Seeds Pvt. Ltd., Yelhanka, focusing on genotypes with varying resistance to Tomato Leaf Curl Virus (ToLCV). The research was conducted during the Kharif seasons of 2021 and 2022 in Kestur Village, Doddballapura. Morphological characterization was performed according to DUS guidelines set by PPV&FRA, assessing 20 qualitative and 22 quantitative traits. The genotypes were grown in a randomized complete block design for reliability. Multi

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Meena, Vijay Kumar, Preeti Verma, Rajdeep Jajoriya, and Ritu Sharma. "Genetic Diversity Analysis in Chickpea (Cicer arietinum L.) Genotypes in South-Eastern Rajasthan, India." Journal of Experimental Agriculture International 47, no. 4 (2025): 16–22. https://doi.org/10.9734/jeai/2025/v47i43353.

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A field experiment was conducted during Rabi 2019-20 to study genetic diversity in forty chickpea genotypes. The grouping of chickpea genotypes into eight clusters suggested the presence of wide genetic diversity among them. The Cluster III was the largest including 10 genotypes followed by cluster IV (9 genotypes), cluster II (7 genotypes), cluster VI (6 genotypes), cluster V (4 genotypes), cluster VI (2 genotypes) while clusters I and VIII had one genotype each. The maximum inter cluster distance was observed between cluster V and cluster VIII, followed by cluster I and VIII, cluster VI and

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Zeleke, Bantalem, and Fisseha Worede. "Morphological and Genetic Diversity Study of Upland Rice Varieties under Rain-fed Environment." Journal of Tropical Crop Science 9, no. 03 (2022): 157–64. http://dx.doi.org/10.29244/jtcs.9.03.157-164.

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A field experiment was conducted at Fogera Northwest Amhara region to study the morphological traits to variability in 20 upland rice varieties, consisting of nine NERICA and eleven parents. The data were collected from ten randomly selected plants of each plot (plant height, panicle length, culm length, flag-leaf length, number of spikelet per panicle, number of grains per panicle, number of filled grains per panicle, numbers of fertile tillers per plant, yield per plant) and from plot bases (days to heading, days to maturity, grain-filling period, thousand-seed weight, biomass yield, grain y

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Jose, J. Jean, P. Udayakumar, A. Chandran, K. Narendra Babu, and V. S. Sudhanandh. "Zooplankton Diversity in Vallarpadam, India: Influence of Hydrochemistry, Season and Semi Diel Cycle." Asian Journal of Water, Environment and Pollution 8, no. 1 (2011): 103–8. http://dx.doi.org/10.3233/ajw-2011-8_1_14.

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Statistical analysis of data concerning the zooplankton standing crop influenced by the hydrochemical characters and season over semi diel cycle were presented. A dendrogram for hierarchical classification of multivariate cluster analysis showed a succession of two clusters. Copepod varieties form a single cluster apart from the other zooplankton group indicated a positive correlation expressed by a low distance cluster scale combination. The chemical factors, especially salinity and nutrient composition, showed significant correlation sustaining the zooplankton standing crop.

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Rezaeian, Mohsen. "Suicide Clusters: Introducing a Novel Type of Categorization." Violence and Victims 27, no. 1 (2012): 125–32. http://dx.doi.org/10.1891/0886-6708.27.1.125.

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Asuicide cluster within a given community may be defined as a group of suicides or suicide attempts, or both, that happen closer together in time and space than would generally be expected. However, since the perception of clustering may itself be a risk factor for suicide, suicide clusters differ almost from all other event clusters. The aim of this article, therefore, is to discuss the unique pattern of suicide cluster and introduce a novel type of categorization taking into account varieties of studies, which investigate suicide clusters within diverse settings. This article concludes with

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Meenu, Singh. "A STUDY OF DIFFERENCES IN DIFFERENT VARIETIES OF TORIA." International Journal of Advances in Engineering & Scientific Research 1, no. 2 (2014): 16–20. https://doi.org/10.5281/zenodo.10720113.

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<strong>Abstract</strong> <em>Difference in 105 genotypes of toria germ plasm was evaluated by statistical methods. Oil content, fatty acid composition and glucosinolate content was estimated and data obtained for various characters were subjected to statistical analysis i.e. analysis of variance, measurement of genetic divergence. Analysis of variance indicated that all the genotypes were significantly different from each other for all the characters. 105 genotypes, included in the study were grouped into 8 clusters. Genotypes occupying one cluster may also have little diversity and selection

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