Indian Society of Genetics & Plant Breeding

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PHENOTYPIC STABILITY OF HYBRIDS AND THEIR PARENTS FOR SEED COTTON YIELD AND ITS COMPONENTS IN DESI COTTON (G. ARBOREUM L.)

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The phenotypic stability of 83 genotypes of Asiatic Cotton (60 hybrids and 23 parents)
grown over six different environments was studied for four characters, viz. days to flower
initiation, plant height, No. of bolIs and seed cotton yield/plant. Variances due to
genotypes, environments, G x E interactions, and pooled deviation were significant for alI
the characters. Most of the variation could be attributed to the differences between the
linear slopes of regression for these characters. The nonlinear component of G x E
interaction was also substantial for plant height. In general, the genotypes with relatively
high performance possessed low stability, except the hybrid RG-10 x G-27 (dwarf) which
had highest mean with high stability. The most stable genotypes for different characters
were BH-113 for earliness, RG-10 x G-27 for dwarfness, and BH-113 x Lohit for balIs/plant
and seed cotton yieId/plan t.
 

Keywords: Asiatic cotton, Gossypium arboreum, phenotypic stability

Info

Year: 1992
Volume: 52
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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