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Mapping quantitative trait loci for waterlogging tolerance in cucumber using SRAP and ISSR markers.

Author(s)
Martin Agyei Yeboah Savanna Agricultural Research Institute, P.O. Box 52, Tamale, Ghana
Chen Xuehao School of Horticulture and Plant Protection, 12 East Wenhui Road, Yangzhou University, Jiangsu, People`s Republic of China
Chen Rong Feng School of Horticulture and Plant Protection, 12 East Wenhui Road, Yangzhou University, Jiangsu, People`s Republic of China
Mouammar Alfandi School of Horticulture and Plant Protection, 12 East Wenhui Road, Yangzhou University, Jiangsu, People`s Republic of China
Guohua Liang The Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 12 East Wenhui Road, Yangzhou, Jiangsu 225009, People`s Republic of China
Gu Minghong The Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 12 East Wenhui Road, Yangzhou, Jiangsu 225009, People`s Republic of China
Abstract
The aim of this study was to map Quantitative Trait Loci (QTL) associated with waterlogging tolerance in cucumber at the early growth stage. A set of 112 F23 lines derived from the cross between two cucumber inbred lines PW0832 (tolerant) to PWO801 (susceptible), was used to evaluate waterlogging tolerance traits: tolerance score (TOL), Adventitious Root Formation (ARF), waterlogged shoot dry weight (SDWw), waterlogged vine length (VLHw), control Shoot Dry Weight (SDWc) and control vine length (VLHc) using a randomized complete-block design. A genetic linkage map containing 30 ISSR and 32 SRAPs markers was constructed, spanning a total of 992.2 cM with an average interval of 16.0 cM. A total of 25 putative QTL were found to be associated with the six traits studied using Composite Interval Mapping (CIM). Fourteen QTL were detected for the four waterlogging traits (TOL, AFR, SDWw and VLHw) and eleven for the two control traits (SDWc and VLHc). The QTL for the waterlogged traits accounted for 7.9-33.2% of the phenotypic variations while the control traits accounted for 6.9-19.1% of the phenotypic variations. Although the detected regions need to be mapped precisely, the findings and QTL found in this study could provide useful information for future genetic studies in cucumber waterlogging tolerance.
Publication Details
Page(s) 157-167
DOI DOI not available
Published Journal: Biotechnology, Volume: 7, Issue: 2, Year: 2008

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