Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Combining ability analysis for yield and fibre quality parameters in intraspecific hybrids of G. hirsutum L.
oleh: N.A.Saravanan, N.A., R. Ravikesavan and T.S. Raveendran
Format: | Article |
---|---|
Diterbitkan: | Indian Society of Plant Breeders 2010-07-01 |
Deskripsi
Four genetically diverse jassid resistant varieties viz., SRT 1, Khandwa 2, KC 2 and SVPR 3 (Females i.e lines) were crossedwith three standard varieties viz., MCU 5, MCU 7 and MCU 12 (male parents i.e., testers) in line x tester fashion for estimationin combining ability effects of twelve economic characters including fibre quality traits like 2.5% span length, bundle strength,fibre fineness, uniformity ratio and elongation percentage. Non-additive type of gene action was found relatively more importantfor all the characters. The jassid resistant parent KC 2 was a good combiner for boll weight, lint index, seed index and bundlestrength besides seed cotton yield. While the parents SRT 1 and MCU 5 were found to be good general combiner for 2.5 per centspan length. On the basis of sca effects the combinations KC 2 x MCU 5, KC 2 x MCU 12 and Khandwa 2 x MCU 5 were thebest hybrids for combining high yield, quality and jassid resistance.