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OverviewFusarium root rot (FRR) is an important soil-borne disease of common bean worldwide. In Africa, minimal or no control measures are applied resulting in heavy yield losses. Popular varieties are susceptible and resistant ones have undesirable traits. Four isolates were tested for pathogenicity and one, FSP-3, subsequently utilised in screening trails to identify resistant varieties. Two soil compositions, i) 50% swamp soil:50% forest soil composition and ii) forest soil, and two irrigation schedules i) once a week and ii) daily, categorized varieties most distinctly according to their reaction to FRR. 147 common bean varieties were evaluated in a screenhouse and 46 of these in the field. Nine varieties were selected as sources of resistance. Evaluation of 66 F1 and F2 populations plus reciprocals showed that FRR resistance was mainly governed by additive genes with a few crosses displaying significant SCA effects. Significant maternal effects and non-maternal were observed. Number of resistance genes varied from 2-9, allelism test suggested presence of many loci governing this trait. Heritability (H) varied from 0.22-0.69 and h2 was estimated at 0.35-0.49. Full Product DetailsAuthor: Clare MukankusiPublisher: LAP Lambert Academic Publishing Imprint: LAP Lambert Academic Publishing Dimensions: Width: 15.20cm , Height: 1.20cm , Length: 22.90cm Weight: 0.304kg ISBN: 9783838389257ISBN 10: 3838389255 Pages: 204 Publication Date: 02 March 2011 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: In stock We have confirmation that this item is in stock with the supplier. It will be ordered in for you and dispatched immediately. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |