利用重組自交系群體對水稻稻瘟病抗性基因Pi-2(t) 進行精細定位, 將Pi-2(t) 定位于分子標記RG64和AP22之間, 遺傳距離分別為0.9cM和1.2cM。該研究建立了Pi-2(t) 基因和分子標記之間的緊密連鎖, 為提高分子標記輔助選擇育種的效率, 以及克隆該基因奠定了基礎(chǔ)。
Using a Recombinant inbred line populat ion, a blast resistance gene of rice, P i-2( t) , w as finelymapped between molecular mar ker RG64 and AP22, w ith genet ic distances of 0. 9 cM and 1. 2 cM, respectively . T his study established a clo se linkag e r elat ionship betw een P i-2( t) and it s molecular markers. T hismay improves the ef ficiency of molecular mar ker assisted breeding and prov ide basis for cloning of thisgene.