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It have proved that wheat translocation line H9020-1-6-8-3 derived from Psathyrostachys huashanica Keng is an important resistant resource to stripe rust.To confirm the existence of resistant genes,it was crossed with susceptible cultivar MingXian 169 as male and female parent,respectively.Seedlings of parents and F2 progeny were tested for resistance to selected CY29 of races of Puccinia striiformis f.sp.tritici from China.H9020-1-6-8-3 had one dominant resistant gene which temporarily named YrHs,whatever it was male or female parent.By using BSA method,two markers,Xgwm261 and Xgwm455 located on 2DL were found.The distance to YrHs were 4.3 and 5.8 cM respectively.The result could be used in molecular-assisted breeding.
It has proven that wheat translocation line H9020-1-6-8-3 derived from Psathyrostachys huashanica Keng is an important resistant resource to stripe rust. To confirm the existence of resistant genes, it was crossed with susceptible cultivar MingXian 169 as male and female parent, respectively. Sepes of parents and F2 progeny were tested for resistance to selected CY29 of races of Puccinia striiformis f. sp. tritici from China. H9020-1-6-8-3 had one dominant resistant gene which temporarily named YrHs, whatever it was male or female parent.By using BSA method, two markers, Xgwm261 and Xgwm455 located on 2DL were found. The distance to YrHs were 4.3 and 5.8 cM respectively. The result could be used in molecular-assisted breeding.