[Gene analysis of Chinese barley dwarf germplasm resources. I. Inheritance and allelism test of the dwarf genes] [In Process Citation].

The plant height inheritance of 24 Chinese barley dwarf germplasms and the allelic relationships between the dwarf genes in them and the known dwarf genes uz, sdw, br and denso were studied. It was found that most Chinese barley dwarfs were controlled by 1 pair, a few by 2 pairs of recessive genes, only one by 1 pair recessive and 1 pair incomplete dominant genes. Allele frequence at the known dwarf gene uz locus was very high in Chinese barley dwarfs. Most monogenic and 2 digenic barley dwarfs had allelic relationships with uz. A monogenic barley dwarf 11012.2 from India and a digenic dwarf Yan 66 were found allelic to the known dwarf gene sdw. But no dwarfs had allelic relationship with the known dwarf genes br and denso. Monogenic dwarf mutants 91G318, 91D27 and 93-597 carried 1 pair of new recessive dwarf genes respectively. Digenic dwarf mutant 1974E possessed 1 pair of new incomplete dominant dwarf genes. Besides, 4 pairs of new recessive dwarf genes were indentified in 6 Tibetan barley dwarfs.