GENETIC VARIABILITY AND CORRELATION STUDIES IN GREEN CHILLIES {Capsicum annuum L.) UNDER HIGH TEMPERATURE STRESS

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Date
1998-07-16
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MAHATMA PHULE KRISHI VIDYAPEETH, RAHURI-413 722. DIST. AHMEDNAGAR, M.S. INDIA.
Abstract
Twenty chilli cultivars were obtained from germplasm collection at All India Co-ordinated Vegetable Improvement Project, Rahuri. Singificant differences were observed among the chilli cultivars in respect of qualitative and quantitative characters indicating a high magnitude of variability in the genotypes under study, except the fruit diameter. The estimates of G.C.V. were low as compared to P.C.V. Very high estimates of heritability were obtained for the characters ascorbic acid content of green fruits, fruit length and fruit set percentage. High heritability values with high genetic advance were observed for the characters weight of green fruits per plant, weight of marketable green fruits per plant and number of green fruits per plant. Thus, high additive genetic variance for these characters suggested that these can be improved by selection. INAMDAR V.G. M.Sc.(AGRL) ABST. (Contd...) Weight of marketable green fruits per plant (i.e. marketable yield of green fruits) showed significant and positive correlation with fruit diameter, number of green fruits per plant, weight of green fruits, capsaicin content and fruit set percentage at both phenotypic and genotypic levels. The D2 statistics showed that there was adequate diversity among the cultivars. The maximum D2 value was observed between the cultivars viz., RHRC-16-5 and Jwala, while it was lowest between cultivars viz. Sai and Utkal Ragini. On the basis of these values twenty cultivars were grouped into four clusters with substantial genetic divergence between them. A tentative breeding programme has been suggested for improving various
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