Linkage Maps of the Genus Hedychium (Zingiberaceae) Based on SRAP

In this study,using a pseudo-cross strategy,we constructed two maps of Hedyhium,Hedychium coronarium and Hedychium forrestii based on SRAP markers. The mapping population consisted of 87 progenies,from a F1 population. A total of 414 primer pairs were screened and 92 pairs were considered. Among 398 loci,237 loci were from the paternal parent and 161 were from the maternal parent. After χ2 test and linkage analysis,two maps were constructed as following:The paternal parent contained 203 loci and spanned 1 386.8 cm,which spread over 23 linkage groups. The maternal parent contained 139 loci and spanned 917.1 cm. These loci were distributed in 18 linkage groups.