New Sources of Resistance in Vicia faba to Chocolate Spot Caused by Botrytis fabae
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Date
1988-08-01
Date Issued
ISI Journal
Impact factor: 3.809 (Year: 1988)
Authors
Citation
S. B. Hanounik, Larry D. Robertson. (1/8/1988). New Sources of Resistance in Vicia faba to Chocolate Spot Caused by Botrytis fabae. Plant Disease, 72 (8), pp. 696-698.
Abstract
A two-cycle screening technique was used to evaluate 253 faba bean germ plasm accessions for resistance to chocolate spot. In the first cycle in 1985, faba bean accessions were exposed to a mixture of 20 isolates of Botrytis fabae collected from a wide range of naturally infected leaves of local susceptible cultivars grown in major faba bean production regions in Syria. Some of the resistant accessions detected in 1985 developed a few coalesced sporulating lesions. To subject resistant materials to a rigorous evaluation, 20 isolates of B. fabae obtained from such lesions were used in a second screening cycle in 1986 to inoculate progenies of the resistant accessions detected the previous season. Of the 253 accessions, 14 new, potentially useful sources of resistance to a wide range of isolates of the pathogen were identified.
