GENETIC VARIABILITY IN LOOSE FLOWER TYPE CHRYSANTHEMUM (Dendranthema x grandiflorum)
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Date
2012
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Indira Gandhi Krishi Vishwavidyalaya Raipur
Abstract
The present investigation entitled “GENETIC VARIABILITY IN LOOSE FLOWER TYPE CHRYSANTHEMUM (Dendranthema x grandiflorum)” was conducted at the Horticultural Research cum instructional Farm, Department of Horticulture, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.) during the year 2011-2012 to study the performance of fifteen loose flower type chrysanthemum genotypes in Randomized Block Design replicated three times. Considerable variability for most of the characters was indicated by analysis of variance.
The genotype Reddish Yellow recorded maximum plant height and number of leaves plant-1 whereas maximum number of branches plant-1, number of flowers plant-1 and flower diameter was obtained in the genotype White Decorative. The minimum plant spread, number of branches plant-1 and number of flowers plant-1 was observed in genotype Pink Decorative.
High genotypic and phenotypic co-efficient of variation was observed in number of leaves plant-1, leaf area, number of branches plant-1, number of florets flower-1, floret size, average flower weight and numbers of flowers plant-1. There is scope for improvement of these characters through selection.
High heritability coupled with high genetic advance as per cent mean was noticed for plant height, plant spread, number of leaves plant-1, leaf area, number of branches plant-1, number of florets flower-1, average flower weight, flower diameter, floret size, number of flowers plant-1 and shelf life suggesting involvement of genetic factors being governed by additive gene effects.
Strong positive correlation of number of flowers plant-1 with number of leaves plant-1, plant spread, number of branches plant-1 and days to full bloom was observed. The path analysis indicated that number of branches plant-1 expressed highest positive direct effect on number of flowers plant-1 both at genotypic and phenotypic levels.
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75 p.