国内重要抗源品种水源11、水源92及Hybrid 46抗条锈基因关系分析

Relation analysis of stripe rust resistance gene in wheat important cultivar suwon 11,suwon 92 and hybrid 46

小麦著名抗源品种水源11、水源92及Hybrid46在我国小麦抗病育种中发挥了重要作用,为了明确其抗锈遗传规律,研究用条中29号及其弱株突变系CY29-mut3,分别接种这3个品种的双列杂交F2、F3代各株系幼苗。结果表明,水源11、水源92与Hybrid46所含抗条锈基因不同,而同来自朝鲜的品种水源11、水源92可能含相同的或完全连锁的抗条锈基因。水源92有3对基因抗中国条锈小种,且不同小种及细胞质对基因表达都有影响,水源92为父本时分别对CY29-mut3及条中29号小种有3对显性基因起抵抗作用(其中两对基因表现为累加作用);而当水源92为母本时分别对CY29-mut3及条中29号小种有1对完全显性基因和两对隐性基因表达抗病作用。国际已知基因品种Hybrid46为母本时对CY29-mut3有两对基因起作用(可能是两对隐性基因,也可能是存在累加作用的两对显性基因),而对CY-29小种有3对独立遗传的显性基因表达抗病作用。

It had postulated that wheat cultivars Suwon 11 and Suwon 92 have Yr4 that had been designated in English cultivars Hybrid 46.To confirm the existence of the genes and to determine genes related among these cultivars,and they were crossed with susceptible cultivars Huixianhong and set dialleds crosses among them.Seedling of parents and F2 and F3 progeny were tested for resistance to selected China races of Puccinia striiformis,aviralent race CY29mut 3 which mutant from race CY29.To CY29mut 3 and CY29,Suwon 92 has three genes (two of them present additive effect) when it is male parent,and it has one dominant gene and two recessive genes when it is female parent.Hybrid 46 has two genes resisting CY29mut 3 (they possibly are either recessive or present addition effect),it has three genes resisting CY29.F2 population from Suwon 11 and Suwon 92 intercrosses did not segregate susceptibility to CY29mut 3,indicating that the two cultivars possibly at least has common or closed linkage loci resisting stripe rust.F3 lines from Suwon 11 and Hybrid 46 intercrosses segregated susceptibility to CY29mut 3,indicating that the two cultivars possibly has not common resisting stripe rust.