Line x Tester analysis for yield and its component traits in pumpkin (Cucurbita moschata Duch.Ex Poir)
Keywords: Keywords, pumpkin, Line x tester, combining ability, yield.
AbstractLine x tester analysis was carried out involving twelve lines and three testers for assessing the combining ability for yield and its component characters in pumpkin (Cucurbita moschata Duch.ex Poir).The combining ability analysis revealed that highly significant differences among the treatments for all the parameters were exhibited by the genotypes. The variance due to sca was higher than the gca for all the characters indicating the predominance of non-additive gene effects. Out of 15 parents of study, the lines Vadhalagundu local followed by Kasi Harit were the best combiners for days to first female flower appearance, node number for first female flower appearance, sex ratio, days to first harvest, fruit number per vine and quality characters viz., carbohydrate content, total carotenoids content and fruit yield per vine as they expressed preferable and significant gca effect. Among the testers CO2 had significantly preferable gca effect for days to first female flower appearance , node number for first female flower appearance, sex ratio, fruit number per vine, total carotenoids content and yield per vine and the tester Arka suryamukhi also expressed significant preferable gca value for days to first harvest, carbohydrate content and total carotenoids content. The cross Kasi Harit x Avinashi local were identified as specific combiners for days to first female flower appearance, node number for first female flower appearance, sex ratio, fruit number per vine, flesh thickness, total carotenoids content, and fruit yield per vine followed by Vadhalagundu local x CO2 for node number for first female flower appearance, sex ratio, carbohydrate content, total carotenoids content fruit number per vine and fruit yield per vine.
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