Heterosis and combining ability analysis for yield and its components in durum wheat (triticum durum, desf.)‎

الملخص EN

Analysis of variance for combining ability in 6-parent diallel (excluding reciprocals) of durum wheat (Triticum durum, Desf.) revealed the following results.

Desirable heterosis values over better parent were observed for some cross combinations for all the studied traits ; plant height, days to heading, days to maturity, No.

spikes / plant, No.

kernels / spike, 1000 kernel weight and grain yield / plant.

The analysis of variance for combining ability showed that mean squares due to general combining ability (GCA) as well as specific combining ability (SCA) were highly significant for all studied traits indicating the importance of both additive and non-additive gene effects with the preponderance of non-additive type of gene effects for yield and most of its components.