journal of kerbala university

This study carried out to investigate the comparative genotype x environment interaction for number of tillers per plant, plant height, number of spikes per plants, spike length, biological yield, 100 grain weight and grain yield, and estimation of broad sense heritability, for 23 introduced genotypes from ICARDA, in addition to the varieties registered and certified, Abo-Graib, Sham6 and Talafer3. All 25 genotypes were planted at three locations in Nineveh Governorate (Al-Rahmania, Wana and Telkef) using randomized complete block design with three replications. It was shown from combining analysis of variance that environment (location) mean square was significant at 1% level for plant height, spike length and biological yield, and non significant for other characters, and genotype mean square and it's interaction with environments was highly significant for all characters. The broad sense heritability ranged between 50.007% for number of tillers per plant and 71.243% for plant height, and it was high for plant height, spike length, 100 grain weight and grain yield and moderate for other characters. There was positive highly significant correlation for grain yield with each of plant height, spike length and biological yield, and positive highly significant correlations for biological yield with each of number of tillers per plant, plant height, number of spikes per plant and spike length. The stability parameters results showed that four introduced genotypes (BUS/PVN//MILAN/TX96V2427, VORONA/HD2402/3/RSK/CA8055//CHAM6, TAM200/KAUZ//Ltg-164 and Billing " N566/OK94P597") in addition to the three local varieties characterized by high stability for most characters. Six introduced genotypes showed good response to favorable environments only for most characters, while there was good response for unfavorable environments shown by six genotypes for specific characters.