GENETIC VARIABILITY IN MUTANT CONFECTIONARY SUNFLOWER (Helianthus annuus L.)
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Authors
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K. SAI PHANINDRA
Department of Genetics and Plant Breeding, College of Agriculture, Vasantrao Naik Marathwada Krishi Vidyapeeth, Latur - 413 512
Abstract
Genetic variability was induced in confectionary sunflower (Helianthus annuus L.) genotypes viz., EC 625693, EC
318761 and SCG 62 with sodium azide (NaN3) at concentrations of 100 ppm, 200 ppm and 300 ppm in distilled water for four hours
along with control, respectively. The analysis of variances revealed significant differences between treatments for all ten
characters under study. There was a close correspondence between GCV and PCV for all characters. High GCV, PCV, heritability
and genetic advance as per cent of mean were exhibited by seed filling percentage, 100 grain weight, sugar content and seed
yield plant-1. The 300 ppm showed high genetic parameters for head diameter, seed filling percentage, seed yield plant-1, 100 ppm
for 100 grain weight. On the basis of per se performance, EC 625693 of 100 ppm showed positive shift in mean for seed yield
plant-1 compared to control, while other genotypes showed negative response to mutagenic treatment. The material generated can
be effectively improved only after attaining homogeneity among characters.
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