数字农科院2.0

QTL analysis of rice low temperature germinability

文献类型： 外文期刊

作者： TENG Sheng ; ZENG Dali ; QIAN Qian ; Kunihifo Yasufumi ; HUANG Danian ; Zhu Lihuang *

作者机构：

关键词： indica and japonica subspecies;DH population;low temperature germinability;QTL detection;dynamical analysis

期刊名称： Chinese Science Bulletin

ISSN： 1001-6538

年卷期： 2001 年 46 卷 21 期

页码：

收录情况： SCI

摘要： A double haploid population, derived from anther culture of F-1 hybrid between a typical indica and a japonica (ZYQ8/JX17), has been used to investigate the low temperature germinability (LTG) at 15 degreesC. The low temperature germinability of two parents was significantly different. In 6-11 d, the germination percentage of ZYQ8 was higher than that of JX17. In 12-16 d, the germination percentage of JX17 was higher than that of ZYQ8. The quantitative trait loci (QTLs) of every day for low temperature germinability have been mapped based on a molecular linkage map constructed from this population. In 8-11 d, qLTG-9 was identified in C397B-RZ617B on chromosome 9, the additive effect was positive, showing that the allele from JX17 could increase low temperature germinability. In 12-16 d, qLTG-4 was mapped between RG908 and CT563 on chromosome 4, the additive effect was negative, showing that the allele from ZYQ8 could increase low temperature germinability. These two QTLs were detected at different stages, showing the complexity of the mechanism of low temperature germinability.

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