文档介绍：Statistical Properties of the Correlation
Method for Mapping QTL in Double
Haploid Population
Hong Li
Department of Biological Engineering
Chongqing technology and Business University
Chongqing ,China
lhctbu@)
Abstract: This paper analyzed the statistical 2. Material and method
properties of the correlation method used for A Linkage model and ic materials
mapping quantitative trait loci (QTL) in double According [3], the flanking markers loci are
haploid (DH) population. This method has A-a, B-b; QTL is Q-q. If the three loci are linkage,
considered the effect of chiasma interference in the there are three linkage sequences. As the II type
condition of double crossing over. It makes the and III type linkage sequences are similar, we
mapping of QTL more precise and reliable. It only consider the expected genotypic frequencies
discussed the test of two linkage QTLs, and the of the I type and II type linkage sequences in DH
estimation of the epistasis deviation between QTLs population. According to Haldane mapping
−+=
using the correlation coefficient R when there are function, there are baba 2 rCrrrr bab in the I type
−+=
several QTLs affect the quantitative trait of interest linkage sequence, and baab 2 rCrrrr ba in the II
and not linkage with each other. type linkage sequence.
Keywords: marker loci; DH population; correla