Abstract

Performance of durum wheat doubled haploids derived from durum wheat x maize crosses and their parents (Jenah khotifa, Biskri, Karim and Razzek) was evaluated on the basis of germination percentage and six morphological traits such as plant height, spikeless tillers/plant, spike tillers/plant, days from sowing to 50% ear emergence, kernels/spike and 1000-kernel weight. The results indicated that the doubled haploid (DH) lines Jenah Khotifa and Biskri showed greater germination percentage with 70% compared to their parent with 60%. However, DH lines derived from crosses of Rezzak and Karim genotypes hybrid with maize had the same behaviour as their parent respectively. Also, the results showed that the DH lines equalled to the control for average height of plants and spikeless tillers/plant. The difference in average days from sowing to 50% ear emergence between DH₁ lines from Biskri and Rezzak and the control was reduced to 5 and 9 days DHs lines showed 1000-kernel weight and spike tillers/plant greater in DH₁ lines than in the control. However, kernels/spike was significantly greater in control compared with DH lines.

Key words: Hybridization, germination percentage, agronomical trait.