บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Pathogenicity of fungi associated with crown rot of bananas in Latin America on Grande Naine and disease-resistant hybrid bananas.

Marin, D. H.; Sutton, T. B.; Blankenship, S. M.; Swallow, W. H.;

Plant Disease Year: 1996 Vol: 80 Issue: 5 Pages: 525-528 Ref: 26 ref.

1996

บทคัดย่อ

Pathogenicity of fungi associated with crown rot of bananas in Latin America on Grande Naine and disease-resistant hybrid bananas.

Fungi associated with crown rot of bananas were isolated and identified from fruit obtained from Mexico, Guatemala, Costa Rica and Ecuador in Oct. and Nov. 1993. Fusarium semitectum [F. pallidoroseum] and Penicillium spp. were most frequently isolated. In vitro and in vivo growth of F. pallidoroseum, F. moniliforme [Gibberella fujikuroi], Penicillium sp., Gliocladium roseum and Gliocladium sp., isolated from Costa Rican bananas, was determined. The opt. temp. for growth were 24.3, >28.0, 21.8, 24.1 and 29.6 deg C, respectively. All fungi, except the Penicillium sp., grew profusely on the surface of crowns. After inoculation of crowns, G. fujikuroi and F. pallidoroseum caused the greatest amount of rot. Hybrids from the Honduran Foundation of Agricultural Research FHIA 1 (Goldfinger) and FHIA 2, were partially resistant to crown rot fungi. Isolates of F. pallidoroseum and Penicillium sp. from Costa Rica grew on potato dextrose agar amended with 10 mg/litre of thiabendazole which may suggest a red

uced sensitivity of these species to thiabendazole.