Heterosis in bottle gourd Lagenaria siceraria (Mol.) Standl.

Abstract

Studies were carried out to estimate heterosis for yield and yield traits in bottle gourd. Heterosis for fruit yield per vine ranged from -35.2 to 23.9 per cent over mid parent and -17.6 to 68.5 per cent over standard check Samrat. For number of fruits per plant and average fruit weight was ranged from -28.2 to17.9 per cent and -22.1 to 22.4 per cent over mid parent and -17.6 to 53.3 per cent and -11.7 to 44.6 per cent over standard check Samrat, respectively. Regarding fruit length the heterosis ranged from -15.1 to 19.9 over mid parent while standard heterosis ranged from -7.05 to 48.9. Heterosis for days to first fruit harvest ranged from -0.53 to -12.4 and -0.55 to -14.7 over mid parent and standard check respectively. It was important to note that six F 1 hybrids viz., Samrat X Aditi followed by Aditi X TC 092372, IC 093236 X TC 092372, Samrat X TC 092372, Samrat X IC 093236 and Aditi X PSPL produced significantly higher yield than the standard check Samrat.

Relationships between Different Growth and Yield Traits in Bottle Guord [Lagenaria siceraria (mol.) Standl] with Path Coefficient Analysis over Seasons under Salt Affected Soil

“…Internodal length revealed a negative, statistically significant correlation with fruit output per plant at the phenotypic level via the indirect effect of the number of fruits per plant. Positive direct effect of various traits on fruit yield has also been reported by earlier workers viz., for average fruit weight [5,6,7,12] for number of fruits per plant [8,9,13,10] which substantiate the present findings. The path coefficient analysis showed that the genotypic level direct and indirect effects were significantly different from those at the phenotypic level, which may be because the environment influences the various traits under study to various degrees.…”

“…Fruit yield per plant had positive and significant phenotypic correlation with number of fruits per plant, average fruit weight, vine length, number of primary branches per plant, and circumference of fruit. Many earlier researchers had also reported positive and significant correlation of most of the above traits with fruit yield per plant namely, [5,6,7,8,9,10] thereby, they also supported present findings.…”

Gene Action and Heterosis Studies for Yield and its Attributes in Bitter Gourd (Momordica charantia. L) under Temperate Ecologies

“…The superior performance of the cross combinations with H×L, H×M, M×M, M×L general combiners for the respective traits might be due to presence of fixable and non-fixable genes indicating high success through adoption of suitable breeding methods which utilizes both additive and non-additive genetic variation. These results are in collaboration with the results of Dey et al [24], Dubey and Maurya [27], Sit and Sirohi [28] in bottle gourd. As for as the yield and yield attributes are concerned, the crosses mentioned above having positive x positive gca effects revealed that the high sca effects in these crosses was mainly through additive gene effects.…”