Resistance of common bean (Phaseolus vulgaris) to bacterial wilt caused by Curtobacterium Flaccumfaciens pv. flaccumfaciens

• Published in: Journal of phytopathology Vol. 153; no. 4; pp. 245 - 249
• Main Authors: Hsieth, T.F, Huang, H.C, Conner, R.L, Erickson, R.S, Balasubramanian, P.M
• Format: Journal Article
• Language: English
• Published: Berlin, Germany Blackwell Verlag GmbH 01-04-2005; Blackwell
• Subjects: bacterial wilt; beans; Biological and medical sciences; common bean; Curtobacterium flaccumfaciens; Curtobacterium flaccumfaciens pv. flaccumfaciens; disease resistance; Fundamental and applied biological sciences. Psychology; Phaseolus vulgaris; Phytopathology. Animal pests. Plant and forest protection; plant pathogenic bacteria; Canada; North America; America; Plant pathology; common bean; Microbiology; Plant pathogen; Curtobacterium flaccumfaciens pv. flaccumfaciens; Method; Seedlings; Resistance; Grain legume; bacterial wilt; Leguminosae; Vegetable crop; disease resistance; Phaseolus vulgaris; Dicotyledones; Angiospermae; Bacteria; Environment; Spermatophyta; Cultivar
• ISSN: 0931-1785; 1439-0434
• DOI: 10.1111/j.1439-0434.2005.00963.x

Bacterial wilt caused by Curtobacterium flaccumfaciens pv. flaccumfaciens is an important new disease of common bean (Phaseolus vulgaris) in western Canada. Both yellow and orange variants of the pathogen were found in the region. A controlled environment study was conducted to assess 124 common bean cultivars and lines from eight market classes for resistance to the yellow and orange variants of the pathogen, using the hilum injury/seed inoculation method. Results of the screening tests showed significant (P < 0.05) differences in resistance to bacterial wilt among the cultivars or lines. The great northern line L02E317, the great northern cultivar Resolute and pinto lines L02B662 and 999S‐2A, were highly resistant to both variants of the pathogen, with disease severity indices of 0 on a rating scale of 0 (no wilt symptoms) to 5 (dead seedling). Resistant cultivars or lines were found among black, great northern, pink, pinto, small red and Flor de Mayo bean market classes. The study concludes that new bacterial wilt‐resistant germplasm exists among Canadian bean cultivars and lines, and constitutes a valuable resource for breeding common beans for resistance to both yellow and orange variants of C. flaccumfaciens pv. flaccumfaciens.