簇毛麦对不同白粉病菌菌系的抗性反应及其在小麦遗传背景下的表达

THE RESISTANCE REACTION OF H. VILLOSA TO POWDERY MILDEW ISOLATES AND ITS EXPRESSION IN WHEAT BACKGROUND

对引自原苏联的簇毛麦（ＨａｙｎａｌｄｉａｖｉｌｏｓａＬ．Ｓｃｈｕｒ２ｎ＝１４ＶＶ）及其与硬粒小麦杂交育成的双二倍体ＴＨ１ＴＨ１ＷＴＨ２ＷＴＨ３ＴＨ３Ｗ，普通小麦－簇毛麦６Ｄ／６Ｖ异代换系及普通小麦亲本和已知抗白粉病基因的１８个小麦品种为供试材料，用８４个来自美国、德国、中国的小麦白粉病菌菌系进行苗期接种鉴定。发现簇毛麦及其衍生系对所有参试的白粉病菌系表现免疫和抗，比供试的已知抗性基因的１８个小麦品种抗性强，抗谱广。其抗性基因在８１０８６Ａ、Ｄ３１１、墨７５、陕７８５９、宛７１０７、冀麦３０等小麦遗传背景下均能很好表达。

Resistance to eighty four isolates of Blumeria graminis f. sp. tritici was identified in Haynaldia villosa (2n=14, VV), five amphiploids (2n=42, AABBVV), TH1, TH1W, TH2W, TH3, and TH3W, derived from crossing Triticum durum (2n=28,AABB) with H.villosa , and hexaploid substitute wheat lines 6D/6V, pm93064 (DH 2), derived from H. villoas . The results showed that the H. villosa and its derived wheat lines were immune or high resistant to all tested isolates from America, Germany and China. The resistance was more effective than any other resistance gene lines from pm1 to pm20, and the resistance gene has been transfered effectively to tetraploid and hexaploid wheat from H. villosa , and also was inherited to the progenies.