Assessing the efficacy of pyramided genes in conferring dual and durable resistance to bean anthracnose and root rot
Abstract
137 words
Bean anthracnose (Colletotricum lindemuthianum) and root
rots are important diseases of beans in Uganda. The coexistence
of both diseases on the crop in farmers’ fields and
the ability of these pathogens to overcome incorporated
resistances in commercial varieties have greatly undermined
previous breeding efforts leading to severe yield losses in bean
varieties that had been previously released with single gene
resistance. This has created the need for pyramiding genes to
broaden resistance against anthracnose and root rot diseases.
The breeding period could be considerably reduced by the use
of molecular markers which help to track the pyramided genes
concurrently. Therefore, this study aims at developing bean
genotypes with dual and broader resistance to bean anthracnose
and bean root rots through a gene pyramiding programme aided
by the use of SCAR markers for quick selection and gene
tracking.
Subjects
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