Study on Genetic Variability, Broad-Sense Heritability and Genetic Advance in Rice (Oryza sativa L.) for Yield and its Contributing Traits

Assessment of genetic variability, broad-sense heritability, and genetic advance in percent of mean were estimated in forty-five F1s , obtained by crossing ten genotypes of rice varieties using the half-diallel mating design in this study. The results revealed highly significant differences among th...

Full description

Saved in:
Bibliographic Details
Published inEnvironment and ecology Vol. 40; no. 4; p. 1981
Main Authors Kushawaha, Pushpanjali, Chand, Pooran, Gangwar, L K, Singh, S K, Chaudhary, Nirdesh Kumar, Mohan, Shiva
Format Journal Article
LanguageEnglish
Published Kalyani MKK Publications 01.10.2022
Subjects
Coefficient of variation
Crop yield
Flowering
Genetic variability
Genotypes
Grain
Heritability
Oryza sativa
Rice
Online AccessGet full text

Cover

More Information
Summary:Assessment of genetic variability, broad-sense heritability, and genetic advance in percent of mean were estimated in forty-five F1s , obtained by crossing ten genotypes of rice varieties using the half-diallel mating design in this study. The results revealed highly significant differences among the materials used in the current investigation for yield, their contributing traits and their quality characters. The mean sum of squares due to treatment was determined to be highly significant for all fourteen characteristics under study, suggesting that the materials had adequate variability. The difference between estimates of phenotypic or genotypic coefficient of variation was smaller, indicating that environmental influences on the inheritance of those traits were less significant. The result indicates that F1 s possessed high heritability for traits like grain yield per plant, followed by biological yield per plant, harvest index, spikelet's per panicle, kernel length after cooking, 1000 grain weight, panicle length, grains per panicle, hulling percentage, days to maturity, L/B ratio and the plant height was recorded with the lowest heritability. High heritability coupled with high genetic advance as per cent of mean was observed for gel consistency. In comparison, high heritability coupled with moderate genetic advance was observed for harvest index, followed by grain yield per plant, days to 50% flowering, biological yield per plant, spikelet's per panicle and 1000 grain weight.
ISSN:0970-0420