Studies on genetic variability and interrelationship in bottle gourd [Lagenaria siceraria (Mol.) Standl]

Abstract

The genetic parameters were studied to elucidate the genetic variability, correlation and path co-efficient analysis in thirty-nine genotypes of bottle gourd [Lagenaria siceraria (Mol.) Standl] in randomized complete block design with three replications. Observations were recorded for eleven quantitative characters viz., days to first male flower open, days to first female flower open, node number of first female flower, braches plant-1, days to harvest, number of fruits plant-1, fruit weight, fruit length, fruit girth, 100 seed weight and yield ton ha-1. The analysis of variance showed highly significant differences for all the characters studied indicating considerable variability among the genotypes. The highest GCV (35.57%) and PCV (35.62%) were observed for fruit length. The differences between GCV and PCV were high for fruit number plant-1 and days to first male flower open indicating environmental influences. High heritability associates with high estimates of genetic advance in percent of mean were noted for length of fruit, yield, girth of fruit and number of fruits plant-1. It indicated presence of additive gene effect and selection for these traits would be effective. Yield were positively and significantly correlated with fruit weight, 100 seed weight, branch plant-1 and number of fruits plant-1 .Negative associations of yield were noted with days to first male and female flower open, days to harvest and length of fruit. Path analysis revealed that fruits plant-1 (0.93) and weight of fruit (0.467) had very high positive effect on fruit yield ton ha-1 .Int. J. Agril. Res. Innov. & Tech. 8 (1): 14-17, June, 2018

Study on correlation and path analysis of F2 population of cucumber (Cucumis sativus L.)

“…Hence, the yield per vine increases through indirect as well as direct effects of traits under study. These results are in agreement with Cramer and Wehner (2000), Khan et al (2015), Gupta et al (2018) and Sultana et al (2018). The superior promising lines or transgressive segregants over the standard check (Chitra) were identified.…”

Genetic variability in bottle gourd

“…The individual bottle gourd genotypes, which should desirable mean values in characters like fruit length, fruit circumference, node to first pistillate flower anthesis, fruit yield, and node to first staminate flower anthesis, should be selected, because these characters with high genotypic coefficients of variation, high heritability and high genetic advance are controlled by additive gene action and hence direct selection is effective. Aruah et al [15] , Kumer et al [16] , Joydip et al [6] and Sultana et al [17] support the present findings. Days to first staminate flower anthesis, days to first pistillate flower anthesis and days to first picking registered low genotypic coefficient of variation, high heritability and low genetic advance which indicated the preponderance of non additive gene action and influence of environment.…”

Evaluation of Genetic Variability, Heritability and Genetic Advance in Thirty-Five Bottle Gourd (Lagenaria Siceraria) Varieties for Yield and Yield Related Traits

“…This is in accordance with the findings of Devi and Mariappan (2013) in snake gourd who observed similar results for fruit weight and number of fruits vine -1 and Maurya et al (2018) in bitter gourd, Sahoo and Singh (2020) in cucumber also observed cognate results for fruit weight. Kandasmay et al (2019), Chandramouli et al (2021) and Sultana et al (2018) also recorded similar results for number of fruits vine -1 in bottle gourd. Moderate phenotypic and genotypic coefficients of variation (10-19 per cent) were observed for vine length, number of primary branches, fruit flesh thickness and yield vine -1 (Table 1).…”