GrainGenes Reference Report: AOS-24-991
Reference
AOS-24-991
Title
Analysis of stripe rust resistance inheritance of wheat cultivar Guinong 22
Journal
Acta Botanica Boreali-Occidentalia Sinica
Year
2004
Volume
24
Pages
991-996
Author
Cao Z
[ Show all 6 ]
Abstract
Guinong 22, which originated as a derivative from the cross of Haynaldia villosa (Dasypyrum villosum) and T. durum, is an important stripe rust (Puccinia striiformis) resistance resource. To confirm the genes existing in Guinong 22, and to determine the genetic relationship between this cultivar and American cultivar Moro, they were crossed in a diallel fashion with susceptible cultivar Huixianhong. Seedlings of parents, F2 and F3 progeny were tested for resistance to selected China races of P. striiformis, virulent race (CY-31) and aviralent race (CY29-mut3) which is a mutant from race CY-29. Guinong 22 has three genes resistant to CY29-mut3 and CY-31, irrespective of whether it is a male or female parent, which were designated YrGui1, YrGui2 and YrGui3. F2 populations from Guinong 22 and Moro intercrosses segregated with susceptibility to CY29-mut3, indicating that the two cultivars do not have a common gene resisting stripe rust. To CY29-mut3, Moro has four resistance genes (one dominant, two of moderate and one recessive genes) when it is the male parent, and has one dominant and one moderate resistance gene when it is the female parent. To CY-31, Moro has one dominant and one recessive genes when it is a male parent, and it possibly has two recessive genes or two addition effect genes when it is female parent
Keyword
agriculture
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GrainGenes Reference Report: AOS-24-991
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||