Journals / Türk Tarım ve Doğa Bilimleri Dergisi / 2014 / Cilt: 1 - Sayı: 3 #69800
Combining Ability in a 7 × 7 Half-Diallel Cross for Plant Height, Yield and Yield Components in Bread Wheat (Triticum aestivum L.)
- Pages
- 312–321
- DOI
- —
Abstract
The main objective of this study was to estimate general (GCA) and specific combining ability (SCA) for theplant height (PH), grain yield (GY) and yield component in wheat. A 7 × 7 half-diallel cross among bread wheatgenotypes (Adana, Ceyhan, Dariel, Genç, Golia, Pehlivan and Seyhan) was analyzed. Yield components includespike length (SL), spikelets spike-1 (SS), grains spike-1 (GS), fertile tillers plant-1 (FT) and thousand kernel weight(TW). The effects of GCA and SCA were found highly significant. The GCA / SCA ratios indicated that all traits areunder additive gene effect. However, according to gene effects of correlations (GEr), non-additive gene effectwas found for the TW, while the other traits were similar to GCA / SCA. According to inter-trait correlation data,negative relationship at 0.01 level was found between PH and GS, positive relationship at 0.01 level was foundbetween SS and GS; and SS and SL; and GS and GY, positive relationship at 0.05 level was found between PH andTW; SS and SL; FT and SS; and FT and GY. According to GCA effects, Golia and Pehlivan were observed to be thebest combiner parents. The results of this study may be beneficial for plant breeders aiming to develop newgenotypes.
Özet
The main objective of this study was to estimate general (GCA) and specific combining ability (SCA) for theplant height (PH), grain yield (GY) and yield component in wheat. A 7 × 7 half-diallel cross among bread wheatgenotypes (Adana, Ceyhan, Dariel, Genç, Golia, Pehlivan and Seyhan) was analyzed. Yield components includespike length (SL), spikelets spike-1 (SS), grains spike-1 (GS), fertile tillers plant-1 (FT) and thousand kernel weight(TW). The effects of GCA and SCA were found highly significant. The GCA / SCA ratios indicated that all traits areunder additive gene effect. However, according to gene effects of correlations (GEr), non-additive gene effectwas found for the TW, while the other traits were similar to GCA / SCA. According to inter-trait correlation data,negative relationship at 0.01 level was found between PH and GS, positive relationship at 0.01 level was foundbetween SS and GS; and SS and SL; and GS and GY, positive relationship at 0.05 level was found between PH andTW; SS and SL; FT and SS; and FT and GY. According to GCA effects, Golia and Pehlivan were observed to be thebest combiner parents. The results of this study may be beneficial for plant breeders aiming to develop newgenotypes.