Vegetative compatibility groups and pathogenicity among isolates of Fusarium oxysporum f. sp. cucumerinum

被引：54

作者：

Ahn, IP

Chung, HS

Lee, YH ^{[1
]}

机构：

[1] Seoul Natl Univ, Coll Agr & Life Sci, Dept Agr Biol, Suwon 441744, South Korea

[2] Seoul Natl Univ, Coll Agr & Life Sci, Res Ctr New Biomat Agr, Suwon 441744, South Korea

来源：

PLANT DISEASE | 1998年 / 82卷 / 02期

关键词：

Cucumis sativus; genetic diversity; nit mutant;

D O I：

10.1094/PDIS.1998.82.2.244

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Seventy-eight isolates of Fusarium oxysporum f. sp. cucumerinum, the causal agent of cucumber wilt, were isolated from symptomatic tissues of cucumber from four provinces in Korea. These isolates were grouped into vegetative compatibility groups (VCGs) by demonstrating heterokaryosis by complementation tests using nitrate nonutilizing (nit) mutants. All isolates were grouped into six VCGs-1-A, 1-B, 1-C, 1-D, 1-E, and 1-F. No self-incompatibility was observed in any of the isolates tested. VCG 1-A was the most common group within growing regions in Korea and proved to be the most virulent of the VCGs identified. These data indicate that the level of virulence in F. oxysporum f. sp. cucumerinum is related to VCG.

引用

页码：244 / 246

页数：3

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