Construction and Analysis of a Genetic Linkage Map in Pear (Pyrus L.)

摘要

In order to accelerate the molecular breeding study on pear, a genetic map was constructed with 145 Fl populations from a cross of two cultivated Yali and Jingbaili by using AFLP and SSR markers. The map consisted of 18 linkage groups, which included 402 genetic markers, and covered 1395.9cM with an average genetic distance of 3.8 cM, which the length of linkage group varied from 30 cM to 120 cM. And the markers on the linkage group varied from 5 to 56.The AFLP and SSR molecular linkage map of pear is fundamental for gene localization, comparative genomics, and QTL mapping of important agronomic traits.