[Gene analysis of Chinese barley dwarf germplasm resources. II. Location of the dwarf genes on chromosomes].
Twenty dwarf sources of Chinese barley were crossed to a set of marker stocks. Based on the linkage tests with the marker traits and genes, the dwarfing genes in Chinese dwarf barley were located on different chromosomes. Fifteen of the 20 dwarf sources were recessive mono-locus. Among them, BQK carried a pair of dwarfing genes on its short arms of 2(2H) chromosome, linking to the wide outer glume gene w; HZA 77 etc. 10 dwarf sources held dwarfing genes allelic to semi-brachytic gene uz on their long arms of 3(3H) chromosomes respectively; 91G318, 91D27, 11012.2 and JJ had dwarfing genes on their long arms of 4(4H) chromosomes, which linked with the hooded awn gene K. The remaining five dwarf sources were two-locus. Two recessive loci were found to be on 2HS and 4HL respectively in DQQK, ZLL and ZLLQK. A pair of incomplete dominant genes were located on 2HS, and another pair of recessive ones located on 3HL in 1974E. Two recessive loci of Yan 66 were separately located on its 3HL and 4HL.
Zhang
J
J
Institute of Crop Germplasm resources, CAAS, Beijing 100081, China.
D002681:China; D002874:Chromosome Mapping; D003433:Crosses, Genetic; D017343:Genes, Plant; D001467:Hordeum / Q000235:genetics*