Genetics of root yield and quality traits in radish (Raphanus sativus L.)
2003
Kumar, V. | Chandel, K.S. (CSK Himachal Pradesh Krishi Viswavidyalaya, Palampur (India). Department of Vegetable Science and Floriculture)
The genetics of root yield and quality traits viz., ascorbic acid, dry matter and nitrate contents were studied in a line x tester mating design including 14 lines (females) and 4 testers (males) of Asiatic and European origin. The estimates of specific combining variance (_2sca) were of higher magnitude as compared to general variance (_2gca) for root yield, dry matter, ascorbic acid and nitrate content which revealed the preponderance of non-additive gene action. The cross combinations Mino Early White x Pusa Himani and Japanese White x DPR-1 exhibited maximum heterosis to the extent of 59.02 and 56.27% over Japanese White (SC1) and 63.11 and 69.29% over Chinese Pink (SC2) with significant sca effects. The gca effects showed that the lines Mino Early White, Japanese White and Chinese pink and the testers Pusa Himani and DPR-1 were good general combiners for these traits. The per cent contribution of the line x tester interactions was also found higher for the inheritance of these traits.
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