Tuesday, September 11, 2007 - 1:15 PM

Combining ability studies for fibre quality in cotton (Gossypium hirsutum L.)

Dr. Somashekhar D1, Dr. Sharangouda A. Patil2, Dr. Shreekant S. Patil3, Dr. Rajesh .S. Patil4, and Dr. Basanagouda . C. Patil4. (1) university of Agricultural Sciences Dharwad, AGRICULTURAL RESEARCH STATION, DHARWAD, India, (2) Indian Agricultural Research Institute,New Delhi, Pusa campus, New Delhi-110 012, India, (3) UAS, Dharwad, Dharwad Farm, Dharwad, 580 007, India, (4) University of Agricultural Sciences, Dharwad, Karnataka (INDIA), A.R.S. Dharwad Farm, Dharwad , Karnataka, , India, Dharwad, 580 007, India

Combining ability of a highly productive hybrid, RAHH 102, was studied in a line x tester analysis of resulting F4 populations. Analysis of variance indicated predominance of non-additive variance for all fiber quality traits studied. The mean sums of squares (MSS) due to females were significant for 2.5% span length, 50 % span length, fiber strength to length ratio, lint index, seed index, and elongation. Lines x tester interactions were also significant for all characters under study. Effects due to SCA were significant for 2.5% span length in only ten crosses, of which six were in a positive direction. The cross R-23 (102) x RAHH 136 had the highest positive SCA effects (2.13 mm).

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See more of The World Cotton Research Conference-4 (September 10-14, 2007)