Working Document Series Open Access 2010 RUF-34455

Introgressing resistance to Fusarium root rot in selected farmer preferred Andean bean genotypes from Meso-American line and mapping of associated resistance quantitative trait loci

K. KamfwaC. MukankusiM. MwalaP. Okori

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Abstract

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Two populations of beans (Phaseolus vulgaris) from K20 x MLB-49-89A and K132 x MLB-49-89A were assessed for resistance to Fusarium solani f.sp. phaseoli. Additionally, 35 SSR markers were screened for polymorphisism in the parents. The results showed that improvement of Andean varieties for resistance to Fusarium root rot was possible using American line MLB-49-89A. The SSR study identified a major QTL for resistance to Fusarium solani f.sp. phaseoli.

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