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- Title
GENETIC VARIABILITY, HERITABILITY AND GENETIC ADVANCE FOR YIELD AND YIELD COMPONENTS IN WATERMELON (CITRULLUS LANATUS THUMB.).
- Authors
Anburani, A.; Kannan, P.; Muthumanickam, K.
- Abstract
Watermelon (Citrullus lanatus Thumb.) is one of the most popular cucurbitaceous fruit vegetable crops grown in different parts of India. The genetic variability that exist in the available genotypes has got a significant role to play in the crop improvement programmes. A number of local genotypes differing in size and shape of fruits are grown in different regions and this result in assembling these genotypes to assess the variability in order to exercise selection or to involve them in hybridization programmes. Further, for an effective selection programme, an understanding of the direction and magnitude of association of various quantitative traits are essential. The present investigation was carried out using thirty genotypes of watermelon from diversified origin to elicit information on the quantum of genetic variability, heritability and genetic advance in watermelon in the Department of Horticulture, Faculty of Agriculture, Annamalai University, Annamalai Nagar. Variability studies showed significant differences among the thirty genotypes for all the thirteen characters. Yield per plant was maximum in CL 4 genotype collected from Atchirupakkam in Villupuram district. The characters viz., number of vines per plant, sex ratio, days to first female flowers, node number of first female flower, days to fruit maturity and number of fruits per plant were recorded the maximum in the same genotype. Genetic analysis indicated maximum phenotypic and genotypic coefficient of variation for single fruit weight and 100 seed weight. The characters viz., fruits diameter, flesh thickness, number of fruits per plant and yield per plant, recorded highest estimate of PCV and moderate estimation of GCV. The characters viz., number of seeds per fruits, flesh thickness, number of primary branches and fruit diameter recorded moderate estimate of PCV and GCV. Lower estimation of GCV was observed for sex ratio, fruit length, number of male and female flowers. High heritability (broad sense) was observed for 100 seed weight, number of seeds per fruit, single fruit weight, vine length, fruit diameter, fruit length, flesh thickness, number of male flowers, sex ratio, yield per plant, number of primary branches per plant, number of female flowers and number of fruits per plant. Based on mean performance, CL 4 followed by CL 22 and CL 10 were selected as the best genotypes in watermelon for the costal ecosystem, by virtue of their higher yield combined with desirable component characters.
- Subjects
WATERMELON varieties; PLANT hybridization; PLANT genetics; FRUIT weights &; measures; CROP yields
- Publication
Plant Archives (09725210), 2019, Vol 19, Issue 2, p3028
- ISSN
0972-5210
- Publication type
Article