Abstract
The analysis of variance study indicated the presence of significant difference among all the traits in Gossypium hirsutum accessions. The highest phenotypic coefficient of variation (GCV) and genotypic coefficient of variation (GCV) were recorded by seed index, plant height, lint index and boll weight. Genotypic co-efficient of variation had a similar trend as PCV. High heritability along with high genetic advance was observed in traits viz., number of sympodia per plant, single plant yields, seed index and micronaire value. The combinations of high heritability with high genetic advance will provide a clear base on the reliability of that particular character in selection of variable entries. Based on per se performance, the accessions MCU5, TCH1715, TCH1716 and G cot 16 were identified as potential donors for single plant yield (g), number of bolls per plant, 2.5% span length (mm) and bundle strength (g/tex). So these accessions may be utilized for crossing programme to improve a particular character in crop improvement. Key words: Genetic variability, heritability, genetic advance, upland cotton.
Highlights
Full Length Research PaperVariability, heritability and genetic advance in upland cotton (Gossypium hirsutum L.)
Cotton is an important fibre crop of global importance which is grown in tropical and subtropical regions of more than 60 countries of the world
Based on per se performance, the accessions such as MCU 5, TCH1715, TCH1716 and G cot 16 in G. hirsutum were identified as potential donors which recorded highest mean values for single plant yield, number of bolls per plant, 2.5% span length and bundle strength (g/tex)
Summary
Variability, heritability and genetic advance in upland cotton (Gossypium hirsutum L.). High heritability along with high genetic advance was observed in traits viz., number of sympodia per plant, single plant yields, seed index and micronaire value. The combinations of high heritability with high genetic advance will provide a clear base on the reliability of that particular character in selection of variable entries. Based on per se performance, the accessions MCU5, TCH1715, TCH1716 and G cot 16 were identified as potential donors for single plant yield (g), number of bolls per plant, 2.5% span length (mm) and bundle strength (g/tex). These accessions may be utilized for crossing programme to improve a particular character in crop improvement
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