June
2004
, Volume
88
, Number
6
Pages
645
-
649
Authors
D. J.
Vakalounakis
,
National Agricultural Research Foundation (N.AG.RE.F.), Plant Protection Institute, P.O. Box 2228, 710 03 Heraklio, Crete, Greece
;
Z.
Wang
,
Zhejiang University, College of Agriculture and Biotechnology, Biotechnology Institute, 268 Kaixuan Rd., Hangzhou 310029, China
;
G. A.
Fragkiadakis
,
N.AG.RE.F., Plant Protection Institute, P.O. Box 2228, 710 03 Heraklio, Crete, Greece
;
G. N.
Skaracis
,
Hellenic Sugar-Industry, Department of Plant Breeding & Biotechnology, 57400 Sindos, Greece
;
D.-B.
Li
,
Zhejiang University, College of Agriculture and Biotechnology, Biotechnology Institute, 268 Kaixuan Rd., Hangzhou 310029, China
Affiliations
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RelatedArticle
Accepted for publication 22 January 2004.
Abstract
ABSTRACT
Thirty-four isolates of Fusarium oxysporum, obtained in China from cucumber plants showing either Fusarium wilt (F. oxysporum f. sp. cucumerinum) or root and stem rot (F. oxysporum f. sp. radicis-cucumerinum) symptoms, were characterized by pathogenicity, vegetative compatibility, and random amplified polymorphic DNA (RAPD). Of these, 23 isolates were identified by pathogenicity as F. oxysporum f. sp. cucumerinum, and one as F. oxysporum f. sp. radicis-cucumerinum, while 10 isolates were avirulent on cucumber, melon, sponge gourd, and pumpkin. The Chinese isolates of F. oxysporum f. sp. cucumerinum were assigned to RAPD groups III and XXI and to vegetative compatibility group (VCG) 0183, four new VCGs, 0184 to 0187, and a single-member VCG included in the artificial VCG 018-. The Chinese isolate of F. oxysporum f. sp. radicis-cucumerinum was assigned to RAPD group I and bridging VCG 0260/0261. The occurrence of F. oxysporum f. sp. radicis-cucumerinum on cucumber is reported for the first time in China.
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© 2004 The American Phytopathological Society
