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Resistance to bean yellow mosaic virus in Phaseolus vulgaris
Published online by Cambridge University Press: 27 March 2009
Summary
Accessions of green and dry-podded Phaseolus vulgaris beans were tested for resistance to seven isolates of bean yellow mosaic virus (BYMV) originating from a wide geographical area. Based on their level of resistance, the beans could be divided into four groups, (i) accessions with a high level of resistance to most BYMV isolates; (ii) accessions containing previously known sources of resistance in germplasm derived from the cv. Great Northern, which were mainly susceptible to the BOS 25 isolate, but had high levels of resistance to most other isolates; (iii) and (iv) groups showing increasing levels of susceptibility with the accession Red Mexican (common) the most susceptible bean tested. The seven BYMV isolates induced distinct reactions when inoculated to arange of plant species, indicating that they possessed different pathogenicity genes.
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- Copyright © Cambridge University Press 1983
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