Thesis Abstract and Dissertation Abstracts

Abstract Category: Science
Course / Degree: M.Sc (Horticulture)
Institution / University: University of Horticultural Sciences, Bagalkot, India
Published in: 2011

Thesis Abstract / Summary:

The investigation on ‘Genetic variability studies in ridge gourd [Luffa acutangula (L.) Roxb.]’ was undertaken during the year 2010-2011 at Department of Vegetable Science, K.R.C.C.H., Arabhavi, Karnataka. Totally 30 ridge gourd genotypes were evaluated and significant differences were observed among genotypes for all the characters studied. PCV was higher than GCV for all the characters studied. High PCV and GCV were observed for the characters viz. vine length and number of leaves at 90 DAS, node to first female flower, sex ratio, fruit yield per plant, fruit yield per plot, fruit yield per hectare, average fruit weight, fruit length, number of seeds per fruit and seed yield per fruit indicates maximum variability and offers good scope for improvement by simple selection.

 High heritability coupled with high genetic advance over per cent of mean was observed for the characters vine length and number of leaves at 90 DAS, node to first female flower, sex ratio, fruit yield per plant, fruit yield per plot, fruit yield per hectare, average fruit weight, fruit length, number of seeds per fruit and seed yield per fruit indicates these characters were governed by additive gene action and offers good scope for improvement by simple selection through these characters.

The character association studies revealed that the fruit yield per plant highly significant and positive association with vine length 45 and 90 DAS, number of branches 90 days after sowing, number of leaves at 45 and 90 DAS, days to last harvest, sex ratio, per cent fruit set, number of fruits per plant, fruit yield per plot, fruit yield per hectare, fruit length, fruit diameter, rind thickness, flesh thickness, number of seeds per fruit, seed yield per fruit, 100 seed weight. Since, these association characters are in the desirable direction, selection for these traits will improve the yield per plant. Path co-efficient analysis revealed that number of fruits per plant and average fruit weight had high direct effect on fruit yield per plant. The genotypes Arka Sumeet, Arka Sujat and Jaipur Long were superior genotypes for fruit size, quality and yield parameters. Selection of superior genotypes involves crossing and making selection in segregating generations.

Thesis Keywords/Search Tags:
Genetic variability, GCV, PCV, Heritability, GAM

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Submission Details: Thesis Abstract submitted by Hanume Gowda from India on 10-Nov-2011 10:48.
Abstract has been viewed 4189 times (since 7 Mar 2010).

Hanume Gowda Contact Details: Email: hanumegowda.k6@gmail.com Phone: 7760937205

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