The present investigation entitled "Studies on genetic divergence (D 2 ) for fruit yield and its contributing traits in okra [Abelmoschus esculentus L. Moench]", was conducted during Kharif 2019. The experiment comprised of thirty genotypes at Main Experimental Station,

No abstract

The present investigation was conducted to determine the genetic variability, heritability and genetic advance for the quantitative characters among the available germplasm of bottle gourd. Thirty six genotypes including two checks (Pusa Naveen and Narendra Rashmi) evaluated in randomized complete block design with three replications during summer 2019. Single row plot of 3 m length spaced 3 m apart with 50 cm plant to plant distance was maintained. Observations were recorded on 14 quantitative traits viz. days to first staminate flower and pistillate flower anthesis, node number to first staminate and pistillate flower appearance, days to first fruit harvest, green fruit length (cm), green fruit circumstances (cm), mature fruit length (cm), mature fruit circumstances (cm), mature fruit weight(kg), seed weight per fruit(g), number of seed per fruit(g), 100-seed weight(g), seed yield per plant(g). The analysis of variance for the design of experiment indicated highly significant differences among the genotypes for all the characters. Based on mean performance of seed yield and yield components, NDBG-517 (189.67), NDBG-19-4 (176.67), NDBG-63-1-1-1 (140), Pusa Santusti (138.48), NDBG-5-1-1 (133) were identified as most promising genotypes for yield and major component traits. High magnitudes of variability (GCV and PCV) were observed for seed yield per plant (41.70 % and 41.53% ) followed by number of seed per fruit(37.02% and 36.67%), 100 seed weight(33.05% and 32.59%) and seed weight per fruit(30.84% and 28.67%). High heritability (broad sense) (>75%) along with high genetic advance in per cent of mean (>30%) were estimated for seed yield per plant (97.21% and 85.20%) followed by number of seed per fruit (98.15% and 74.85%), 100 seed weight(97.21% and 66.19%), seed weight per fruit(86.43% and 54.91%), mature fruit diameter(94.74% and 46.72%), fresh fruit girth(92.66% and 44.65%), node number to staminate (92.18% and 38.48%) and pistillate flower appearance(92.34% and 38.95%), mature fruit weight(78.00% and 31.43%), fresh fruit length (86.60% and 34.90%) and girth(92.66% and 44.65%), mature fruit length(94.01% and 37.98%) and diameter (94.74% and 46.72%).

Present investigation was carried out during Zaid season 2019-2020 in (Y1) and Zaid 2020-2021 in (Y2) at the Main Experimental Station (MES), Department of Vegetable Science, Acharya Narendra Deva University of Agriculture & Technology, Narendra Nagar, Kumarganj, Ayodhya (U.P) with 21 genotypes with six parental line and their fifteen F1 hybrids of bottle gourd by using diallel (excluding reciprocal) mating fashion. Experiment was laid out in RBD include three replication having each experimental unit with rows space at 3 (m) apart with a plant to plant spacing of 0.50 (m). Significant variances over seasons were found for general as well as sca for all the 17 traits studied during over season pooled which suggested that both additive and non-additive gene action were most important in the expression of all the traits. Pooled combining ability analysis revealed that parents viz., P4, P6 and P2 were good general combiner for fruit yield per plant. An attempt to identify desirable parents based on gca effect as well per se performance of the most of the character studied. Among the 15 F1 crosses P3 x P4, P2 x P6 and P2 x P5 have found good specific combiners for total fruit yield per plant along with most of the other yield contributing characters follow days to first staminate flower anthesis, days to first pistillate flower anthesis, fruit length and  average fruit weight.

Present investigations were carried out in bottle gourd to assess the heritability and genetic advance for yield and quality traits. Fifteen hybrids of bottle gourd generated along with their six parents evaluated in a randomized complete block design with three replication at the Main Experiment Station, Department of Vegetable Science A.N.D. University of Agriculture & Technology, Narendra Nagar, Kumarganj, Ayodhya during the season of Zaid 2020 and Zaid 2021. High heritability was observed for number of primary branch per plant, days to first pistillate flower anthesis, days to first fruit harvest, days to first staminate flower anthesis and vine length during in Y1, days to first staminate flower anthesis, node number to first pistillate flower appearance, days to first fruit harvest, days to first pistillate flower anthesis and non-reducing sugar during in Y2, days to first pistillate flower anthesis, days to first staminate flower anthesis, days to first fruit harvest and non-reducing sugar during in pooled. High genetic advance as percent of mean was observed for average fruit weight, number of fruit per plant, fruit yield per plant and reducing sugar during seasons Y1 and Y2. The results indicated that these traits had additive gene effect and therefore, these are more reliable for effective selection for their further improvement.