Genetic analysis in okra under tarai region of Uttarakhand

Abstract

The crop improvement depends upon the magnitude of genetic variability present in the available germplasm. Therefore, an effort was made to create and assess the variability through hybridization using parameters like PCV, GCV, heritability, genetic advance for different yield and its contributing traits in okra. The present investigation was carried out during summer season of 2018 in Tarai region of Uttarakhand. The experimental material utilized for this study consisted of 59 genotypes including 15 parents (11 lines, 4 testers) and 44 crosses of okra. The analysis of variance showed that significant genetic differences were present among genotypes for all the characters studied. This suggested that there was adequate amount of genetic variability among the experimental material and hence, a greater scope for the improvement of concerned characters through selection. The values of PCV were higher than that of GCV for all the thirteen characters indicating influence of environmental effects in the expression of these characters. Moderate to high GCV together with moderate to high heritability and genetic advance as per cent of mean was reported for majority of the characters under study except days to 50% flowering and fruit length, which indicated predominant additive gene action. Thus these traits have ample scope for the improvement of concerned traits through selection.