National Academy of Agricultural Sciences (NAAS)
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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 |
A study was conducted to know the level and magnitude of genetic variability, heritability and genetic advance of blast resistance gene introgressed segregating population of three crosses in rice. High genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) was found in the cross CB 174 R × Zenith (22.02% and 23.12) for the trait of number of productive tillers per plant. This result indicated that selection of superior segregants could be utilized to develop elite genotypes significantly. For single plant yield, CB 174 R × Zenith cross was showed high heritability coupled with high genetic advance (%) of mean (60.54% and 25.21%) suggesting additive gene action under primarily controlled and simple selection, moderate heritability conjugated with high genetic advance (50.46% and 24.19%) was found in the cross of TNAU CMS 2B × Zenith indicating that selection could be done at later generation, whereas in the cross CB 87 R × Zenith showed moderate heritability joined with moderate low genetic advance as per cent of mean (58.99% and 6.41%), indicating that this trait was governed by both additive and non-additive type of gene action and selection may be effective.
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