Indian Society of Genetics & Plant Breeding

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COMBINING ABILITY ANALYSIS OVER ENVIRONMENTS IN ASIATIC COTTON (GOSSYPIUM ARBOREUM L.)

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The combining ability studies using line x tester (20 lines and three testers) mating design
over six environments for ten characters in Asiatic cotton, revealed that the additive gene
effects were predominant for plant height, boIls, seed-cotton, seed, and lint yield/plant,
ginning percentage, and seed and lint indices. Nonadditive gene effects were more
importantfordays to flowerinitiation, whereas both additive and nonadditive gene effects
were important for halo length. The best general combiners were: SC 136 and Shyamali for
earliness; SD 5 and RG 10 for dwarfness; RG 10 and BH 113 for boIls, seed-cotton, seed and
lint yield/plant, and ginning percentage; SD5 and RG 10 for halo length; and RG 8 and K 7 for
seed and lint indices. No association was detected between per se performance and sca
effects.
 

Keywords: Combining ability, line x tester, Asiatic cotton.

Info

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

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