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Submitted
November 11, 2021
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March 20, 2022
Published
May 29, 2022
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Abstract

The genetic diversity of yield and yield attributing characteristics was explored in this research. In the topical study, fifty-two rice genotypes including four checks were used under three environmental conditions i.e. irrigated (IR), rainfed (RF) and terminal stage drought (TSD) conditions. The prevalence of genetic divergence was evaluated using clustering and Principal component analysis (PCA) was used to determine the relative contribution of various traits. To fulfill the aim of the study, fifty-two genotypes were grouped into three distinct and non-overlapping clusters among these 3 clusters, cluster-I was the largest with the highest number of genotypes i.e. 47, 49 and 49 under IR, RF and TSD conditions, respectively. The highest average intra-cluster distance was observed in cluster-I, also the genotypes showed high variability under all three conditions. The highest inter-cluster distance between the cluster-II and cluster-III (IR and TSD) and cluster-I and cluster-II (RF) was observed, indicated that genotypes from the group should be considered for direct use as parents in hybridization programme to produce high yield. Only five of the 13 principal components (PCs) have been considered in the study based on the Eigen values and variability criteria. From the complex matrix it was revealed that the first-PC accounted for the highest variability. Genotypes which fall under a common PC were observed to be the most important factor for grain yield.

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Cluster analysis PCA yield

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How to Cite
Prakash, H. P. ., Rawte , S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ., Saxena , R. R. . . . . . . . . . . . . . . . . . . . . . . . . . ., Verulkar, S. B. . . . . . . ., & Saxena, R. R. . . . . . . . . . . . . . . . . . . . . . . . . (2022). Assessing the genetic diversity for yield traits in rice (Oryza sativa L.) genotypes using multivariate analysis under controlled and water stress conditions. Environment Conservation Journal, 23(3), 202–210. https://doi.org/10.36953/ECJ.9692201
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