PHYSIOLOGICAL SPECIALIZATION OF PUCCINIA-RECONDITA F-SP TRITICI IN CANADA IN 1990

被引：3

作者：

KOLMER, JA

机构：

[1] Research Station Agriculture Canada, Winnipeg, MB, R3T 2M9

来源：

CANADIAN JOURNAL OF PLANT PATHOLOGY-REVUE CANADIENNE DE PHYTOPATHOLOGIE | 1991年 / 13卷 / 04期

关键词：

D O I：

10.1080/07060669109500924

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

In 1990 leaf rust of wheat (Triticum aestivum) caused by Puccinia recondita f. sp. tritici was first observed on June 21 in southern Manitoba. Infection severity ranged from 20 to 100% in susceptible trap plots; however, commercial cultivars had sufficient resistance and yield losses were minimal in these wheats. A total of 37 virulence phenotypes of the fungus in Canada were detected using 15 isogenic Thatcher lines as differentials. The most common phenotypes were PBL-B in Ontario and Quebec; MDB-14a, MFB-14a, and TBG-14a in the prairies, and NBB-B,18 in British Columbia. No major changes in the identity and prevalence of P. recondita virulence phenotypes in Canada occurred between 1989 and 1990.

引用

页码：371 / 373

页数：3