National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present investigation was carried out to assess the genetic variability parameters, correlation and path analysis in 32 rice elite germplasm for 13 yield and its contributing traits during kharif 2018 at Field Experimentation Centre, Department of Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom of Agriculture, Technology and Sciences, Uttar Pradesh in Randomized Block Design, replicated thrice. The analysis of variance for mean sum of squares due to genotypes showed significant differences for all the quantitative characters studied at 1% level and 5% level of significance. PCV and GCV was found high for traits like number of tillers per hill, number of panicle per hill, biological yield, harvest index and grain yield per hill. The difference between Phenotypic Coefficient of Variation and Genotypic Coefficient of Variation was low for days to 50% flowering, plant height, number of spikelet’s per panicle and days to maturity traits indicating less influenced by the environment. The characters like number of tillers per hill, number of panicle per hill, biological yield and grain yield per hill showed high heritability coupled with high genetic advance as percentage of mean indicating the preponderance of additive gene action. The grain yield per plant had highly significant and positive correlation both at genotypic and phenotypic levels with number of tillers per hill, number of spikelet’s per hill and harvest index, high direct effects of these characters appeared to be the main reason for their strong association with grain yield. Hence, direct selection for these characters would be very effective for further improvement of grain yield in rice and for development of hybrids in crop improvement programmes.
Citations |
 |
 |
 |
 |
