Hybrid performance and heterosis in F1 offspring of triticale (× Triticosecale Wittm.)

Authors : Mustafa YILDIRIM, Hasan GEZGİNÇ, Ali Haydar PAKSOY

Pages : 877-886

Doi:10.3906/tar-1401-126

View : 19 | Download : 10

Publication Date : 2014-12-01

Article Type : Research Paper

Abstract :In this study, the combined ability effects and heterosis were determined for number of days to anthesis insert ignore into journalissuearticles values(AT);, plant height insert ignore into journalissuearticles values(PH);, fertile tillers plant–1 insert ignore into journalissuearticles values(FT);, spike length insert ignore into journalissuearticles values(SL);, spikelets spike–1 insert ignore into journalissuearticles values(SS); and grains spike–1 insert ignore into journalissuearticles values(GS);, 1000-kernel weight insert ignore into journalissuearticles values(TW);, and grain yield plant–1 insert ignore into journalissuearticles values(GY); of 4 triticale genotypes [Karma insert ignore into journalissuearticles values(G1);, Presto insert ignore into journalissuearticles values(G2);, Ayşehanım insert ignore into journalissuearticles values(G3);, and Mehmetbey insert ignore into journalissuearticles values(G4);] and their 6 F1 offspring. The mean squares of general combining ability insert ignore into journalissuearticles values(GCA); and specific combining ability insert ignore into journalissuearticles values(SCA); were statistically significant for all traits. According to the GCA/SCA, additive gene effects were found for all traits. According to the desired values for traits on the basis of GCA and SCA, parents G1 were good general combiners for 3 traits, G3 for 6, and G4 for 6. Crosses G1 × G2 were good specific combiners for 3 traits, G1 × G3 for 3, G1 × G4 for 3, G2 × G3 for 5, G2 × G4 for 6, and G3 × G4 for 4. Heterosis and heterobeltiosis were –16.78% and –25.71% for AT, –1.66% and –11.02% for PH, 34.25% and 9.87% for FT, 14.62% and 11.44% for SL, 8.09% and 3.87% for SS, 4.57% and 0.91% for GS, 9.67% and 6.13% for TW, and 30.36% and 9.11% for GY, respectively. The results revealed that G2 × G3 and G2 × G4 combinations could be recommended for improved yield of triticale.
Keywords : Combining ability, heterosis, triticale, yield, yield component