摘要
在温室用95个西藏大麦条锈病菌菌株接种35个小麦品种的苗期,用20个小麦条锈病菌菌株接种72个大麦品种的苗期,并用条锈病菌两个类型有代表性毒性的菌株接种西藏重要大、小麦品种的成株期,结果大麦条锈病菌不能侵染绝大多数参试小麦品种。小麦条锈病菌不能侵染绝大多数参试大麦品种。表明二者致病性存在明显差异。大田观察结果也表明条锈病菌两个类型在西藏的发生与流行是独立的。因此,作者赞同将二类型区分为不同专化型的观点。
The consisting difference of pathogenicity between isolates ofbarley-attacking form (BYR) and wheat-attacking form (WYR) of Puccinia striiformis was observed from the inoculation trials in theglass-house during 1984 and 1987.The combination for inoculationtrials were as the following,95 BYR isolates X 35 wheat vars.and 20WYR isolates X 72 barley vars.in the seedling stage;10 BYR isolatesX 2 wheat vars.and 4 WYR isolates X 7 barley vars.in the adultstage.The deviation in the development of BYR and WYR in Tibet wassignificant.The results indicated that there are two discrete populationsof the pathogen which might be genetically and phenotypically different.The authors supported the view that they should be recognized as f.sp.hordei and f.sp.tritici respectively.
出处
《植物病理学报》
CAS
CSCD
北大核心
1989年第3期161-165,共5页
Acta Phytopathologica Sinica
