Pyramiding Fusarium root rot resistance genes and validation of SSR PVBR87 in common bean

This study determined effectiveness of pyramided Fusarium root rot (FRR) resistance genes and validated association of SSR PVBR87 marker with FRR resistance in common bean. A double cross (DC) involving four resistance sources was used to accumulate FRR resistance genes into one background. The DC F1 and each resistant line were crossed to two susceptible cultivars. Parents, F1 and F2 populations were subjected to FSP-3 in a screenhouse. Two single cross (SC) F2 populations were screened with SSR PVBR87 marker. Fiveparent crosses performed better than single crosses. SSR PVBR87 marker showed association with FRR resistance in the two SC F2 populations.
Cette étude a déterminé l’efficacité des gènes pyramidés de résistance de la putréfaction de racine de Fusarium (FRR) et a validé l’association du marqueur SSR PVBR87 avec la résistance de FRR dans le haricot ordinaire. Un double croisement (DC) impliquant quatre sources de résistance a été employé pour accumuler des gènes de résistance FRR au second plan. Le F1du double croisement DC et chaque lignée de résistante ont été croisés à deux cultivars sensibles. Les parents et les populations F1 et F2 ont été soumis à FSP-3 dans un milieu d’observation. Deux populations F2 de simple croix (SC) ont été examinées avec le marqueur SSR PVBR87. Les croisements de cinq parents se sont exécutés mieux que les croisements simples. Le marqueur SSR PVBR87 a montré l’association avec la résistance FRR dans les deux populations F2 de SC.
Date of publication: 
Region Focus: 
East Africa
RUFORUM Conferences and Workshops
Licence conditions: 
Open Access
Access restriction: 
Printed resource

About the RUFORUM 2010 Biennal Conference
"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholders in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme of Plant Breeding"