Construction of a genetic map and localization of QTLs for yield traits in tomato by SSR markers

摘要

Using an F_2 population derived from the hybrid of Lycopersicon esculentum Mill. 'XF 98-7' X Lycopersicon pimpinel-tifolium LA2184, a SSR genetic linkage map of tomato is constructed. The map contains 112 markers and spans 808.4 cM with an average distance of 7. 22 cM between loci. Two quantitative trait loci (QTLs) for first flower node on chromosomes 5 and 11, two QTLs for number of flowers per truss on chromosomes 2 and 5, and five QTLs for fruit weight on chromosomes 1, 2, 3, 9 and 12 are identified.