ABSTRACT

This study used SSR and AFLP markers to construct the genetic linkage map of Reyan5-11×PR107 population, integrated the published genetic linkage map and utilised the integrated map to perform QTL mapping of rubber yield-related traits. A genetic map consisting of 132 molecular markers (88 SSR and 44 AFLP markers) was constructed, and a joint map consisting of 143 molecular markers (99 SSR and 44 AFLP markers), which contained 19 linkage groups covering the rubber tree genome of 1298.5 cM, each linkage group containing 2–40 Mark, the average distance between the marks is 9.08 cM. Under the conditions of LOD ≥ 2.5, it was detected 2 QTLs related to girth, 3 QTLs related to dry rubber content, and 3 QTLs related to dry rubber yield per tree, 4 QTLs related to the unit secant length dry rubber yield, 5 QTLs related to the number of conducting phloem laticifer and 4 QTLs related to the number of yellow phloem laticifer.

摘要

本研究利用SSR和AFLP标记构建了Reyan5-11×PR107群体遗传连锁图谱，整合已发表的遗传连锁图谱，利用整合图谱对橡胶产量相关性状进行QTL定位。构建了由132个分子标记（88个SSR和44个AFLP标记）组成的遗传图谱，由143个分子标记（99个SSR和44个AFLP标记）组成的联合图谱，包含19个连锁群，覆盖了1298.5 cM的橡胶树基因组，每个连锁群包含2-40个标记，标记之间的平均距离为9.08 cM。在LOD≥2.5的条件下，检测到2个与周长相关的QTL，3个与干胶含量相关的QTL，3个与每棵树干胶产量相关的QTL，4个与单位割线长度干胶产量相关的QTL，