玉米茎粗Meta-QTL及候选基因分析

Analysis of Meta-QTL and Candidate Genes Related to Stem Diameter in Maize

摘要:

茎粗是影响玉米抗倒性及产量的重要因素之一。本研究对来自17个不同作图群体的玉米茎粗QTL信息进行收集和整理,将95个玉米茎粗QTL整合到IBM2 2008 Neighbors高密度分子连锁图谱上,通过元分析方法得到20个与玉米茎粗相关的一致性QTL(Meta-QTL)区域。与水稻和高粱已克隆的茎粗相关基因进行对比,得到两个玉米茎粗候选基因GRMZM2G307588和GRMZM2G089836。

Abstract:

Stem diameter is an important factor affecting maize lodging and grain yield. In the study, we collected the information of maize stem diameter QTL from 17 different mapping populations. 95 QTLs for maize stem diameter were integrated into IBM2 2008 Neighbors, and 20 consistent QTL（Meta-QTL） regions related to maize stem diameter were obtained by meta-analysis. Compared with cloned genes related to stem diameter of rice and sorghum,two candidate genes, GRMZM2 G307588 and GRMZM2 G089836, were identified for stem diameter in maize.