Interval mapping of quantitative trait loci by molecular markers in rice (Oryza sativa L.)

Yunbi Xu, Zongtan Shen, Jichen Xu, Heng Zhu, Ying Chen, Lihuang Zhu

Research output: Contribution to journalArticle

Abstract

Using an F2 as the mapping population derived from indica Zhaiyeqing 8 and japonica Jingxi 17 of rice, a linkage map was constructed, which consisted of 54 restriction fragment length polymorphism (RFLP) markers. By using the interval mapping procedure based on 2 flanking markers, 11 quantitative trait loci (QTLs) were mapped for 4 traits: days to heading (Dth1), tiller angle (Ta1), spikelet number per panicle (Sn1, Sn2, Sn3) and spikelet density (Sdn1-Sdn6). An example was taken for QTL mapping of rice, and the interval mapping was shown to be able to detect the QTL located between 2 flanking markers. For a specific trait, more than one QTL could be found on one chromosome. Genetically related traits could be controlled by the same group of QTLs or polygenic system.

Original languageEnglish (US)
Pages (from-to)422-428
Number of pages7
JournalScience in China (Scientia Sinica) Series B
Volume38
Issue number4
StatePublished - Apr 1 1995
Externally publishedYes

Keywords

  • linkage mapping
  • quantitative trait loci (QTLs)
  • restriction fragment length polymorphism (RFLP)
  • rice (Oryza sativa L.)

ASJC Scopus subject areas

  • Environmental Science(all)
  • Engineering(all)
  • Earth and Planetary Sciences(all)

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