PATHOLOGICAL AND PHYSIOLOGICAL CHARACTERIZATION OF 2 VERTICILLIUM-ALBO-ATRUM POPULATIONS ISOLATED FROM ALFALFA AND POTATO

被引：3

作者：

BARASUBIYE, T ^{[1
]}

RICHARD, C ^{[1
]}

DOSTALER, D ^{[1
]}

机构：

[1] UNIV LAVAL,FAC SCI AGR & ALIMENTAT,DEPT PHYTOL,QUEBEC CITY,PQ G1K 7P4,CANADA

来源：

PHYTOPROTECTION | 1994年 / 75卷 / 02期

关键词：

D O I：

10.7202/706052ar

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Pathogenicity and growth of strains of Verticillium albo-atrum recovered from alfalfa (Medicago sativa) and potato (Solanum tuberosum) were determined. On alfalfa, the alfalfa strains were more virulent than the potato strains, and only the potato strains were virulent on potato. The optimum temperature for growth was 20 degrees C for potato strains, and 20-25 degrees C for alfalfa strains on potato dextrose agar. At 30 degrees C, no alfalfa strain was killed whereas this temperature was lethal for 75% of the potato strains. On Fries medium, the potato strains produced three to four times more dry weight than the alfalfa strains. However, on a solid medium amended with potassium chlorate, a significant inhibition was noted for potato strains as compared to alfalfa strains. These results indicate that V. albo-atrum strains isolated from alfalfa and potato form two pathologically and physiologically distinct groups.

引用

页码：53 / 67

页数：15

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