EFFECTS OF SOIL-WATER STATUS ON INFECTION OF SOFT RED WINTER-WHEAT BY SOILBORNE WHEAT MOSAIC-VIRUS

被引：3

作者：

HIMMEL, PT

SIMMONS, FW

HEWINGS, AD

GLAWE, DA

机构：

[1] USDA/ARS Crop Protection Research Unit and Department of Plant Pathology, University of Illinois, Urbana, IL

[2] Department of Agronomy, University of Illinois, Urbana, IL

[3] Department of Plant Pathology, University of Illinois, Urbana, IL

来源：

CANADIAN JOURNAL OF PLANT PATHOLOGY-REVUE CANADIENNE DE PHYTOPATHOLOGIE | 1992年 / 14卷 / 02期

关键词：

D O I：

10.1080/07060669209500891

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Drummer silty clay loam soil, naturally infested with soilborne wheat mosaic virus (SBWMV) and its vector Polymyxa graminis, was used to assess effects of soil matric potential on infection of roots of soft red winter wheat. Soil cores were packed to a bulk density of 1.2 g cm-3. Soil matric potentials of -6.8, -13.0, -17.5, or -20.5 kPa were established in the cores using hanging water columns. After 4 weeks, plant roots were evaluated for the presence of SBWMV antigen by enzyme-linked immunosorbent assay. The incidence of virus antigen in roots was highest at -13.0 kPa, followed by -17.5 kPa, -6.8 kPa, and -20.5 kPa. Low SBWMV incidence at the wettest and driest treatments suggests that decreasing water potential increases infection until aeration becomes limiting.

引用

页码：147 / 151

页数：5

共 19 条

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