Phytopathology (1996) 86, p. S63 (Potti et al.)

R.S. Potti and G.J. Weidemann (1996)
Vegetative compatibility of Verticillium dahliae isolates from okra and related hosts
Phytopathology 86 (11 suppl.), S63-S63
Abstract: Verticillium wilt, caused by Verticillium dahliae can be an important disease in okra, Abelmoschus esculentus, in some regions of the United States. The objective of this study was to determine the vegetative compatibility group (VCG) diversity of V. dahliae isolates from okra and related hosts. Three isolates of V. dahliae pathogenic on okra, and 29 isolates from cotton, velvetleaf, eggplant, potato, tomato, chillipepper, cantaloupe, and artichoke from several locations in the United States were examined. Vegetative compatibility was assessed using nitrate non-utilizing (nif) mutants. All three isolates of V. dahliae from okra were vegetatively compatible with each other and complemented with nit mutant tester strains from cotton which belonged to VCG 2 (Phytopathology 80:1160-1166). Pathogenicity of cotton and okra isolates are being compared on each of these hosts. Results of VCG analysis of the non-okra V. dahliae isolates will be discussed.

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Verticillium dahliae	Okra and relatives (Abelmoschus)