VIRULENCE IN EASTERN NORTH-AMERICAN POPULATIONS OF PUCCINIA-SORGHI TO RP RESISTANCE GENES IN CORN

被引：20

作者：

GROTH, JV

PATAKY, JK

GINGERA, GR

机构：

[1] UNIV ILLINOIS,DEPT PLANT PATHOL,URBANA,IL 61801

[2] UNIV MINNESOTA,DEPT HORT SCI,ST PAUL,MN 55108

来源：

PLANT DISEASE | 1992年 / 76卷 / 11期

关键词：

D O I：

10.1094/PD-76-1140

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The effectiveness of 24 alleles from four Rp loci that condition race-specific resistance to common rust (Puccinia sorghi) in corn (Zea mays) was evaluated in field trials from 1987 to 1991 at many locations in eastern United States and one in central Mexico. In natural and/or inoculated epidemics, near-isogenic lines containing each gene were scored for the presence of susceptible-type uredinia. Only two genes (Rp1d and Rp3c) were totally effective, with no large uredinia observed in any trial. Also, an unnamed gene from M165sel was totally effective during the 3 yr it was tested in St. Paul, Minnesota. Four other genes Rp1e, Rp1f, Rp1g, and Rp1k-showed no more than a trace of rust in a few trials. Lines containing any of the other 17 genes had light to heavy rust levels in most trials in which they were tested.

引用

页码：1140 / 1144

页数：5

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