Estimation of Variability Among Sixty Rice Genotypes Screened Under Rainfed and Irrigated Regimes of Drought Effected Area in West Bengal

摘要

Sixty rice genotypes were evaluated in the drought prone areas of Zonal Drought Resistant Paddy Research Staion, Purulia, West Bengal, India. Agro-morphological important characters were observed to determine the extent of variability existing among the genotypes based on their performances under rainfed and irrigated regimes. Pooled analysis of variance highlighted the significant influence of genotype x environment interactions upon the phenotype of the germplasms evaluated under rainfed and irrigated conditions. The study also suggests that the landrace Vutmuri has the adaptive advantage over the rest of the genotypes when evaluated under moisture stress conditions. Whereas under irrigated conditions the cultivar Gontra Bidhan III outperformed the remaining genotypes Correlation coefficient analysis was performed in order to determine the influence of various traits analyzed upon each other. The pooled data suggest that grain yield/ plant was significantly influenced by traits like Total tillersplant, Total spikelet's/ panicle, Fertile spikelet's / panicle and Chlorophyll content.