Genetic study of various agronomic traits in cotton (Gossypium hirsutum L.)
2009
Ashraf, F. (Cotton Research Station, Multan (Pakistan)) | Khan, I.A. (University of Agriculture, Faisalabad (Pakistan)) | Ahmed, S. (Cotton Research Station, Multan (Pakistan)) | Noor-ul-Islam (Cotton Research Inst., Faisalabad (Pakistan))
The use of already existing genetic variability in the breeding material, as well as the creation of new variability along with the genetic understanding of various agronomic traits is of crucial importance, in order to develop potential sources of cotton. For this purpose, 5x5 complete diallel cross experiment was conducted during 2003-04, involving 5 strains i.e. VH-55, MNH-516, ACALA-SJ-4, A-8100 and CRIS-420, to evaluate gene-action, general and specific combining ability for number of sympodial branches, number of monopodial branches, plant height, number of bolls per plant, boll weight and yield of seed cotton. Additive type of gene action, with partial dominance for all the traits studied, was observed. Most dominant genes for boll weight yield of seed-cotton, and number of sympodial branches were observed in CRIS-420, while maximum dominant genes for number of monopodial branches, plant height were observed in ACALA-SJ-4.
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