Agronomic Characterization of Rice Genotypes and its Relations with Yield Trait

Abstract

In the present study we reported the physio-morphological characterization of fourteen mineral rich as well as high yielding rice genotypes. Genotypic and phenotypic coefficient of variation for various traits in fourteen rice varieties reported in this study. Phenotypic coeffici ent of variation (PCV) was higher than or equal to the genotypic coefficient of variation for all the parameters of all rice genotypes. Phenotypic correlation coefficient association between various traits in fourteen rice varieties was assessed, yield per plant showed a positive correlation with grains per panicle (0.250; p=0.01), number of panicles per plant (0.111; p=0.01), and effective number of tillers per plant (0.152; p=0.01). In addition to this path coefficient analysis was done to study direct and indirect effects of component traits on grain yield per plant. The data shows that grain weight had highest positive direct effect on grain yield per plant.

Genetic variation and trait association of fine rice genotypes

“…Regarding grain yield per hectare, genotype Tarahara-107 (3940 kg/ha) had the highest grain yield followed by Tarahara-2 (3700 kg/ha), NR 2381-RGA1-RGA2 (3665 kg/ha), NR 2229-4-2-1-1-1 (3575 kg/ha). Tarahara-2 also showed highest grain yield with filled grains number (154 per panicle) which might be due to their significant positive association which coincides with result from Basanti et al (2018). Genotypes NR 2380-RGA1-RGA2 and NR 2381-RGA1-RGA2 were earlier matured genotypes with good filled grains and yield might be due to high solar radiation with optimum temperature interaction (Mehraj et al, 2019).…”