GENETIC IMPROVEMENT OF DRY BEAN FOR RESISTANCE TO WHITE MOLDUSING A MAGIC POPULATION

摘要

White mold (Sclerotinia scleriotorum Lib. De Bary) is considered one of the most important diseases for dry bean in U.S.A. When susceptible varieties are planted in historically infected fields, seed yield losses can be up to 100%. The use of resistant varieties is the most effective strategy to fight field diseases. For white mold, this has been difficult to incorporate because of the quantitative nature of genetic resistance. This trait is complexly inherited and highly influenced by the environment. The objectives of this research were to identify resistant lines from a Multi-parent Advanced Generation Inter-Cross (MAGIC) population with good agronomic performance and the identification of genetic factors involved.