Molecular Dissection of Developmental Behavior of Plant Height in Rice (Oryza sativa L.)

Molecular Dissection of Developmental Behavior of Plant Height in Rice (Oryza sativa L.)

Juqiang Yan^a, Jun Zhu^a, Cixin He^a, Mebrouk Benmoussa^a, and Ping Wu^b
^a Department of Agronomy, Zhejiang Agricultural University, Hangzhou, 310029, China
^b Department of Biological Science, Zhejiang Agricultural University, Hangzhou, 310029, China

Corresponding author: Jun Zhu, Department of Agronomy, Zhejiang Agricultural University, Hangzhou 310029, China., jzhu{at}zjau.edu.cn (E-mail).

Communicating editor: Z.-B ZENG

A doubled haploid population of 123 lines from IR64/Azucenawas used to dissect the developmental behavior and genotypeby environment interaction for plant height by conditional andunconditional quantitative trait loci (QTL) mapping methodsin rice. It was shown that the number of QTL detected was differentat various measuring stages. Some QTL could be detected at allstages and some only at one or several stages. More QTL couldbe found on the basis of time-dependent measures of differentstages. By conditional QTL mapping of time-dependent measures,it is possible to reveal dynamic gene expression for quantitativetraits. Mapping QTL for genetic main effects and GE interactioneffects could help us in understanding the nature of QTL x environmentinteraction for the development of quantitative traits.

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