Host Suitability of Diverse Lines of Phaseolus vulgaris to Multiple Populations of Heterodera glycines
AbstractThe host suitability of diverse races and gene pools of common bean (Phaseolus vulgaris) for multiple isolates of Heterodera glycines was studied. Twenty P. vulgaris genotypes, representing three of the six races within the two major germplasm pools, were tested in greenhouse experiments to determine their host suitability to five H. glycines isolates. Phaseolus vulgaris genotypes differed in their host suitability to different H. glycines isolates. While some common bean lines were excellent hosts for some H. glycines isolates, no common bean line was a good host for all isolates. Some bean lines from races Durango and Mesoamerica, representing the Middle America gene pool, were resistant to all five nematode isolates. Other lines, from both the Andean and Middle America gene pools, had differential responses for host suitability to the different isolates of H. glycines.
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