EFFECTS OF SOLUBLE SILICON ON THE PARASITIC FITNESS OF SPHAEROTHECA-FULIGINEA ON CUCUMIS-SATIVUS

被引：86

作者：

MENZIES, JG ^{[1
]}

EHRET, DL ^{[1
]}

GLASS, ADM ^{[1
]}

HELMER, T ^{[1
]}

KOCH, C ^{[1
]}

SEYWERD, F ^{[1
]}

机构：

[1] UNIV BRITISH COLUMBIA,DEPT BOT,VANCOUVER V6T 2B1,BC,CANADA

来源：

PHYTOPATHOLOGY | 1991年 / 81卷 / 01期

关键词：

D O I：

10.1094/Phyto-81-84

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The effects of silicon treatment of cucumber on four components of parasitic fitness of Sphaerotheca fuliginea (a causal agent of powdery mildew of cucumber) were examined. Cucumber plants were treated with nutrient solutions amended with different concentrations of soluble silicon and selected leaves inoculated with known concentrations of conidia of the pathogen. Colony number per leaf, colony area per leaf, and the germination of conidia collected from inoculated leaves were significantly reduced with increasing silicon concentration in the nutrient solutions. The area of individual colonies was also reduced as silicon concentrations in the nutrient solutions increased from 0.05 to 4.10 mM. The decrease in receptivity of plants to mildew infection was apparently due to silicon accumulation in leaves and was not related to cation or ionic strength effects of the silicon treatments.

引用

页码：84 / 88

页数：5

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