العلاقات الوراثية للغلة الحبية و مكوناتها في القمح القاسي

الملخص EN

This study was carried out at Karahta Station, Dept.

of Field Crops Researches, General Commission for Scientific Agriculture Researches (GCSAR) Damascus, Syria, during the growing seasons (2009-2010, 2010-2011).

The crosses were grown inatrial using randomized complete block design (RCBD) with three replicates in order to evaluate number of spikes per plant, number of grains per spike, thousand kernel weight and grain yield per plant and estimate some genetic indices: broad scenes heritability (BSH), narrow scenes heritability (NSH), and genetic advance (GA).

Seeds of five populations of the three evaluated single hybrids were formed by crossing of five inbred lines.

Analysis of variance results showed significant differences among mean values of the five populations of each cross for all studied traits.

The results revealed that the broad scenes heritability ranged between high and moderate for the following productivity traits (SP/PL, GR/SP, TKW and GY/P) and it was (75, 40, 57) (38, 80, 38) (74, 60, 85) and (73, 73, 71) for the three crosses, respectively.

Additive gene action noticed on most traits indicated less selection cycles to improve these traits.