Mapping quantitative trait loci for cold tolerance at the booting stage in rice by using chromosome segment substitution lines
Mapping quantitative trait loci for cold tolerance at the booting stage in rice by using chromosome segment substitution lines
复制标题
利用染色体片段置换系绘制水稻孕穗期耐冷数量性状位点
DOI：
10.1071/cp17329
复制
发表时间：
2018-01-01
影响因子：
1.9
通讯作者：
Yan, Song
中科院分区：
文献类型：
--
作者：
Lei, Jianguo;Zhu, Shan;Yan, Song
抽象的。水稻孕穗期的低温可导致雄性不育，造成产量损失。Sasanishiki(Sasanishiki，SSP.)Jumonica)和Habataki(冷敏感，SSP.对两种自然低温环境进行分析，研究孕穗期耐冷性的遗传基础。以小穗育性作为耐冷性鉴定的评价指标。其中2个位于第3染色体(qCTSF3.1和qCTSF3.2)上，其余位于第4(QCTSF4)、5(QCTSF5)、6(QCTSF6)、7(QCTSF7)、8(QCTSF8)和9(QCTSF9)染色体上。各QTL解释的表型变异在5.4%~25.3%之间。在8个QTL中，有6个(qCTSF3.2、qCTSF5、qCTSF6、qCTSF7、qCTSF8、qCTSF9)在两个环境中被重复检测到。QTL qCTSF3.1、qCTSF7和qCTSF9与已报道的QTL重叠。所有QTL的所有耐性等位基因均由Sasanishiki贡献。
Abstract. Low temperature at the booting stage in rice (Oryza sativa L.) can cause male sterility, resulting in yield losses. A set of chromosome segment substitution lines derived from the varieties Sasanishiki (cold-tolerant, ssp. japonica) and Habataki (cold-susceptible, ssp. indica) was used for analysis across two natural, low-temperature environments to study the genetic basis for cold tolerance at the booting stage. Spikelet fertility was used as the evaluation index for cold tolerance identification. Eight quantitative trait loci (QTLs) for cold tolerance were detected, two of which were located on chromosomes 3 (qCTSF3.1 and qCTSF3.2), and the others on chromosomes 4 (qCTSF4), 5 (qCTSF5), 6 (qCTSF6), 7 (qCTSF7), 8 (qCTSF8) and 9 (qCTSF9). The phenotypic variation explained by each QTL ranged from 5.4% to 25.3%. Of the eight QTLs, six (qCTSF3.2, qCTSF5, qCTSF6, qCTSF7, qCTSF8, qCTSF9) were repeatedly detected in two environments. QTLs qCTSF3.1, qCTSF7 and qCTSF9 overlapped with previously reported QTLs. All tolerant alleles for all QTLs were contributed by Sasanishiki.