Abstract:
This study was performed to evaluate the diversity of various morphological characters and their relationship with yield in rice. At the time of maturity different traits were recorded under normal field conditions in Randomized Complete Block Design (RCBD) experiment. Significant variation was observed in all genotypes with respect to their desired traits. Plant yield, number grains per panicle, unfilled grains per panicle and plant height showed highest genetic variability. Highly significant association of 1000 grain weight was observed positive with panicle length, grains per panicle, seed setting% and yield per plot/hectare showed positive association with seed setting and 1000 grain weight (r= 0.31**, r=0.34**, r= 0.45**, r= 0.66*, r= 0.48*, r=0.58**, r=0.56**). Biplot analysis (PCA) was also conducted for both qualitative and quantitative traits. Days to flowering (34.2 %) showed highest variability followed by days to maturity, plant height, panicle length, tillers per plant and grains per panicle (18.7%, 12.4%, 7.90%, 6.80%, 5.90% respectively). The scree plot, score plot and loading plot showed greatest genetic variability among the genotypes and the desirable traits. This study will hopefully, be beneficial in selection of parents to produce desirable recombinants for rice breeding program.
Page(s):
483-492
DOI:
DOI not available
Published:
Journal: International Journal of Biology and Biotechnology, Volume: 19, Issue: 4, Year: 2022
Keywords:
Oryza sativa
,
Yield
,
Variability
,
Association
,
Agronomic traits