Studies on genetic divergence and inter-relationship of yield components in the seed crop of okra (Abelmoschus esculentus L. Moench)

摘要

Himachal Pradesh provide an ideal conditions for the production of virus free and quality okra seed but information on genetic variability parameters of different seed traits and their relationships in increasing the productivity of seed crop are lacking. Therefore, the present study was aimed to evaluate the genetic parameters, correlation coefficients and selection indices in the okra seed crop. The experimental material consisted of fourty eight genotypes of okra received from diverse sources was laid in randomised block design with three replications at the vegetable farm, Himachal Pradesh Krishi Vishvavidyalaya, Palampur (1290 m above mean sea level). Each genotype was planted in a plot of 1.8 m X 2.2 m with a spacing of 45 cm and 20 cm between and within rows, respectively. On 10 random plants data were recorded on days to 50 per cent flowering, plant height (cm), nodes per plant, node at which the first fruit set, internodal length (cm), days to seed maturity, seeds per pod, 100-seed weight (g), seed germination(%), seed vigour and seed yield (q/ha). The genotypic coefficient of variation (GCV), phenotypic coefficient of variation (PCV) and hedtability in broad sense were computed (12). Genetic advance was estimated (3). The genotypic, phenotypic and environmental correlation coefficients were calculated as suggested by Al-Jibouri et al., (1).