Abstract
Nothapodytes nimmoniana has attained international focus recently due to the occurrence of an important group of alkaloids, camptothecin and its derivates. Efforts are being made to domesticate this species for its large scale cultivation for realization of economic utilization by the industries. However, there is a paucity of information on the degree and extent of genetic control for any traits in this species. In this background an experiment was conducted to assess the variation for fruits and seed traits among half-sib families. Half sib families obtained from ten open pollinated individuals of N. nimmoniana from a natural population at Joida, Uttara Kannada District of Karnataka, South India were studied. Significant among-family variation was recorded for all the seed traits studied. Half-sib families also showed significant difference for seed germination and seedling vigour characteristics. Families with large and bold seeds showed higher germination and better seedling growth. Largest genotypic co-efficient of variation was observed for plant height (45.25%), while percent seed germination recorded maximum heritability (H2= 0.92). The results suggested that there is ample scope for genetic improvement of Nothapodytes nimmoniana through family selection.
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