Vol. 5, Issue 5 (2017)
Assessment of heritability, genetic advance, correlation and path analysis in pointed gourd (Trichosanthes dioica Roxb.)
Author(s): Jagamohan Debata, SK Maurya, Hirdesh Yadav and Lalit Bhat
Abstract: Thirty six genotypes of pointed gourd collected from different indigenous sources were grown in Augmented Block Design II with three checks during summer-rainy season, 2015. The accessions were assessed to know the nature and magnitude of genetic variability, correlation and path analysis for different horticultural traits. The days to first fruiting ranged from 56.60 to 75.00, number of nodes at first flowering (4.49-11.82), fruit length (4.91-10.32 cm) and average fruit weight varied from 20.76 g (PPG-15) to 53.93 g (PPG-9). Wide range of variation for number of primary branches (3.99-10.19), vine length (4.24-9.93 m), fruit weight per plant (2.56-8.28 kg), fruit yield per hectare (9.54 to 31.22 t) were found in the germplasms. A narrow range of genetic differences between the PCV and GCV indicates that the traits are mostly governed by genetic factors with minimum environmental influence on the phenotypic expression of these traits. High genetic advance coupled with high heritability was found for number of fruits per plant, nodes per vine, average fruit weight and days to first female flowering suggested that there is high scope for improvement in these characters through direct phenotypic selection. Fruit weight per plant (0.99), number of fruits per plant (0.75), fruit length (0.61) and nodes per vine (0.32) were highly significant and positively correlated with the fruit yield. The genotypic path coefficient showed a direct positive effect by traits like fruit length (0.61), fruit circumference (0.38), average fruit weight (0.51), number of primary branches (0.36), nodes per vine (0.32), number of fruits per plant (0.75), fruit weight per plant (0.99) on fruit yield, whereas seed weight per fruit (-0.37) showed a direct negative effect on fruit yield.
Pages: 705-709 | 799 Views 37 Downloads
How to cite this article:
Jagamohan Debata, SK Maurya, Hirdesh Yadav, Lalit Bhat. Assessment of heritability, genetic advance, correlation and path analysis in pointed gourd (Trichosanthes dioica Roxb.). Int J Chem Stud 2017;5(5):705-709.