“VARIABILITY, CHARACTER ASSOCIATION AND DIVERSITY ANALYSIS IN DESI COTTON (Gossypium arboreum L.)”
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Date
2020-09
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JAU,JUANAGDH
Abstract
The experiment was carried out to assess variability, character association and
diversity analysis in 50 genotypes of cotton grown in a randomized block design with
three replications at Cotton Research Station, Junagadh Agricultural University,
Junagadh during kharif 2019. The observations were recorded on 15 characters viz.,
days to first flowering, days to boll opening, plant height (cm), number of monopodia
per plant, number of sympodia per plant, number of bolls per plant, boll weight (g),
seed cotton yield per plant (g), ginning percentage (%), seed index (g), lint index (g),
oil content (%), 2.5 % span length (mm), fibre fineness (mv) and fibre strength
(g/tex).
The analysis of variance revealed highly significant differences among the
genotypes for all the characters studied. A wide range of variation was observed for
important yield components. High genotypic and phenotypic coefficient of variation
was observed for number of bolls per plant followed by number of monopodia per
plant, seed cotton yield per plant, lint index and number of sympodia per plant. High
heritability coupled with high genetic advance was observed for number of bolls per
plant, number of monopodia per plant, seed cotton yield per plant, lint index and
number of sympodia per plant.