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Title: COMPARISON OF ACREMONIUM SP. FROM THE LOWER RIO GRANDE VALLEY OF TEXAS WITH ACREMONIUM SP. FROM SPAIN

Author
item Bruton, Benny
item MILLER, M - TEXAS A&M UNIVERSITY
item GARCIA-JIMENEZ, J - UNIVERSIDAD POLITECNICA

Submitted to: American Phytopathological Society
Publication Type: Abstract Only
Publication Acceptance Date: 3/2/1996
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Vine declines are a major limiting factor to cantaloupe production in the Lower Rio Grande Valley of Texas. Since 1994, an Acremonium sp. has been isolated from cantaloupe and honey dew melon roots showing varying degrees of corking similar to those described in Spain. 'Magnum 45' cantaloupe plants were grown in soil inoculated with 0, 1,000, 10,000, 20,000, 30,000, ,40,000, or 50,000 CFU s/g soil using three Texas and Spain isolates. A 10,000 CFU/g of soil was established as an appropriate inoculum concentration for evaluating isolates for pathogenicity and host susceptibility. Disease reactions on 28 da old Magnum 45' plants using three Texas isolates were similar to the disease reactions using Spanish isolates. A cucurbit host range inoculated with a Texas isolate, TX941022, and a Spanish isolate, SP934941, illustrated a wide range of disease reactions in the 41 cucurbits tested. In general, disease reactions in Luffa sp., Cucurbita spp., and Lagenaria sp. were rated highly resistant t resistant whereas, Cucumis spp., Cucurbita spp. (squash types), and Citrullus sp. were rated from moderately to highly susceptible.