Expression of necrosis in the hybrids of amphiploids Triticum durum-Haynaldia villosa and Hordeum chilense-Triticum durum with some bread wheat cultivars

摘要

Two amphiploids (Triticum durum-Haynaldia villosa [Dasypyrum villosum] and Hordeum chilense-Triticum durum) were crossed reciprocally with 11 bread wheat accessions. Out of 44 cross combinations, 18 crosses showed severe necrosis, 8 moderate necrosis and the remaining 18 were found to have weak necrosis. The degree of necrosis in the hybrids varied greatly due to multiple allelism of the Ne1 and Ne2 genes.