Estimation of genetic parameters for seed yield and its attributing traits in bottle gourd (Lagenaria siceraria (Mol. Standl.) germplasm

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%).

Study on Genetic Parameters and Characters Association in Bottle Gourd (Lagenaria siceraria)

“…Thus, it is difficult to judge whether the observed variability is heritable or not. Therefore, the primary variability parameters like variance, phenotypic variance, genetic advance and heritability are useful in understanding the nature of inheritance of different traits in bottle gourd [2,3]. The fruit make delicious supplement to the human diet and 100 g of fruits contain nearly 96 g water, 0.2 g protein, 0.1 g fat, 2.5 g carbohydrate, 0.6 g fiber, 0.5 g minerals, 20 mg calcium, 10mg phosphorus, 0.7 mg iron, 0.3 mg thiamine, 0.01 mg riboflavin and 0.2 mg niacin and energy 1.2 cal.…”