tailieunhanh - Studies on genetic variability, heritability, genetic advance, correlation and path analysis for grain yield and its contributing traits in indigenous wheat (Triticum aestivum L.)

The present investigation was carried out with twenty (with two checks) indigenous genotypes of wheat to study the variability, heritability and genetic advance. The field experiment was conducted under timely sown condition during Rabi 2017-18 in randomized block design with three replication at Nidhariya Agriculture farm . TOWN . College Ballia, . The data were recorded on twelve characters viz. days to 50% flowering, tillers per plant, flag leaf area, plant height, ear length, days to maturity, biological yield, ear weight, number of grains per ear, harvest index, test weight and grain yield per plant. Analysis of variance revealed that the treatments differed significant for all the characters under study except tillers per plant, ear length per plant and ear weight per plant which indicated the material to be of different genetic constitution. The highest values for GCV & PCV were recorded for the character biological yield per plant and grain yield per plant. High heritability along with high genetic advance was obtained for plant height, flag leaf area, biological yield and test weight indicating that traits were under additive gene control and selection for genetic improvement for these traits would be effective. The data showed that the grain yield had significant and positive association with days to 50% flowering (), tillers per plant (), flag leaf area (), plant height (), ear length (), biological yield per plant (), ear weight (), harvest index ( and test weight (). Path coefficient analysis revealed that biological yield per plant () had the highest positive direct effect on grain yield per plant followed by harvest index (). The results revealed that these traits may serve as effective selection attribute during selection in breeding program for yield improvement in wheat. | Studies on genetic variability, heritability, genetic advance, correlation and path analysis for grain yield and its contributing traits in indigenous wheat (Triticum aestivum L.)