Vol. 12, Issue 7 (2023)

Author(s):
Pooja Kathare, Anjan Roy, Pranjali Sinha, Priya Gupta, M Kavitha, Sathees Nagarajan and Ajit Kumar Mannade

Abstract:
Twenty rice genotypes (Oryza sativa L.) had been characterized to assess the yield and its attributing characters under heat stress conditions in the present experiment in the summer season of 2020 year following a randomized block design with three replications. Statistical analyses carried out to compute variability and correlation study revealed that spikelet fertility has high degree of significant positive association with yield square meter^-1. The principal component analysis study revealed that first two PCs accounted for 73.90% of the cumulative variance with eigenvalues of 2.33 and 2.11 for PC1 (Plant height) and PC2 (Panicle length) respectively. Studies on gene action involving parents of contrasting traits and identification of loci of quantitative parameters of significance would enable to identify of elite lines from the present set of genotypes for further improvement in the future.