Combining ability and heterosis were determined in a population obtained from the half diallel crossing of 6 different cotton genotypes for yield components and fiber quality parameters. For breeding purposes, to improve the investigated characters some suitable parents were selected for different characters: DPL 5690 for number of bolls per plant, Acala SJ-5 for boll weight and fiber length; Nazilli-84 and Carmen for seed cotton yield and lint percentage; Tamcot CAMD-E for earliness and fiber fineness; and PD 6168 for fiber strength. When the crosses were evaluated for the investigated characters Tamcot CAMD-E x Carmen, Nazilli-84 x PD 6168, DPL 5690 x Tamcot CAMD-E and Tamcot CAMD-E x PD 6168 are considered promising combinations for further research. It was concluded that applying 3-way crosses, or modified backcross or recurrent selection to genotypes having good combining ability would improve yield and fiber quality.
Cotton, diallel analyses, heterosis, general and specific combining ability
BAŞAL, HÜSEYİN and TURGUT, İSMAİL (2003) "Heterosis and Combining Ability for Yield Components and Fiber Quality Parameters in a Half Diallel Cotton (G. hirsutum L.) Population^1," Turkish Journal of Agriculture and Forestry: Vol. 27: No. 4, Article 3. Available at: https://journals.tubitak.gov.tr/agriculture/vol27/iss4/3