Study of variability in a population of papaya (Carica papaya L.)
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Date
2005-06
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present investigation was carried out during 2004-05 at Horticultural Research Centre, Patharchatta of G.B. Pant University of Agriculture and Technology, Pantnaagr. The experimental material comprised of a population of papaya. The objective was to study the variability in population.
Observations were recorded on 63 selected plants for 9 plant and fruiting characters namely number of fruits per plant, fruiting length, height to first fruit, fruit weight, pulp thickness, fruit diameter, pul[p colour, cavity size and total soluble solids. Analysis of variance revealed significant differences among all the selected 63 plants for all the eight characters except pulp colour which was not analysed .
Wide range of mean values for all the eight traits showed immense variability present in the population for these traits which provided scope for selection. Phenotypic correlation coefficients were calculated between eight pairs of traits on the basis of overall selected plants. Most of the characters were found positive and significantly correlated with each other. Cavity size was the trait which showed positive and significant correlations with other traits viz., fruit number, fruiting length, fruit diameter and total soluble solids. Phenotypic correlations which were calculated between five pairs of fruiting traits on individual plant basis showed almost similar results but some different results were also obtained.
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