Fine mapping of the quantitative trait locus qFLL9 controlling flag leaf length in rice

被引：0
作者：
Shukun Jiang
Xijuan Zhang
Jiayu Wang
Wenfu Chen
Zhengjin Xu
机构：
[1] Shenyang Agricultural University,Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture, Key Laboratory of Northern Japonica Rice Breeding of Liaoning Province
[2] Dandong Academy of Agricultural Sciences,undefined
来源：
Euphytica | 2010年 / 176卷
关键词：
SSR marker; Rice; Cytochrome P450; Fine mapping; Flag leaf length;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The morphological traits of leaves, such as size and shape, are major determinants of plant architecture and strongly affect high yield performance. To understand the molecular mechanism governing flag leaf length, we analyzed quantitative trait loci (QTLs) affecting flag leaf length by employing 176 F2 individuals derived from a cross between two japonica rice cultivars: Shennong265 (SN265) and Lijiangxintuanheigu (LTH). We identified qFLL3, qFLL6 and qFLL9 from this F2 population. Flag leaf length was increased by SN265 alleles at qFLL3 and qFLL6, but by LTH allele at qFLL9. In order to eliminate the influence of qFLL3 and qFLL6, one single residual heterozygous plant for qFLL9 region, RH-qFLL9, was selected based on the genotypes of 114 simple sequence repeat (SSR) markers and used as the parent of a segregating population. Using this segregating population of 889 plants, this region was narrowed down to an interval between RM24423 and RM24434. According to the rice annotation project database, there are 17 predicted genes in the 198-kb target region.
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页码：341 / 347
页数：6
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