volume 38 issue 1 (march 2004) : 65·68
GENETIC VARIABIUTY AND PATH ANALYSIS IN ONION
1Orissa University of Agriculture and Technology,
Regional Research Station, Bhawanipatna- 766 001, Orissa, India
Published In
Indian Journal of Agricultural Research
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volume 38 issue 1 (march 2004) : 65·68
GENETIC VARIABIUTY AND PATH ANALYSIS IN ONION
1Orissa University of Agriculture and Technology,
Regional Research Station, Bhawanipatna- 766 001, Orissa, India
ABSTRACT
Evaluation of 12 varieties of onion over 4 years revealed moderate to high estimates of heritability and genotypic coefficient of variation with moderate genetic gain for neck thickness, weight of bulb and number of leaves/plant which could be improved by simple selection. The phenotypic and genotypic associations of bulb yield were significantly positive with plant height, number of leaves/plant, diameter, and weight of bulb but significantly negative with neck thickness. Path analysis showed that weight and diameter of bulb produced positive direct effect on yield and positive indirect effect through each other on yield. Plant height and number of leaves/plant also exerted positive indirect effects via these traits on yield suggesting to give emphasis on such traits while making selection for bulb yield in onion.
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Published In
Indian Journal of Agricultural Research