Identification of salt-tolerance QTL in rice (Oryza sativa L.)
Identification of salt-tolerance QTL in rice (Oryza sativa L.)
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DOI：
10.1007/bf03182889
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发表时间：
1999-01-01
影响因子：
--
通讯作者：
Chen, SY
中科院分区：
文献类型：
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作者：
Gong, JM;He, P;Chen, SY
利用水稻（Oryza sativa L.）双单倍体群体ZJDH及其高分辨率遗传连锁图谱，采用区间定位（SIM）和复合区间定位（CIM）鉴定了水稻苗期控制耐盐性的数量性状位点（qtl）。该群体由籼稻品种寨叶清8 （ZYQ8）与粳稻品种京西17 （JX17）的亚种间杂交而来。对0.7% NaCl处理的幼苗存活率分析表明，在1号染色体上RG612和C131标记间存在一个主要的耐盐数量性状位点Std。1和PLABQTL 1.0 （SIM）。其耐盐等位基因来自ZYQ8。此外，利用PLABQTL （CIM）鉴定出7个对耐盐性具有加性效应的qtl，其中大部分来自JX17。
Quantitative trait loci (QTLs) controlling salt-tolerance at the seedling stage in rice (Oryza sativa L.) were identified by interval mapping (SIM) and composite interval mapping (CIM) using a doubled haploid population ZJDH and its high resolution genetic linkage map. The population was derived from an inter-subspecific cross between an indica variety Zhaiyeqing8 (ZYQ8) and a japonica variety Jingxi17 (JX17). Analysis of survival days of seedlings treated with 0.7% NaCl revealed that a major salt-tolerance quantitative trait locus (QTL), Std, was present between markers RG612 and C131 on chromosome 1 when using both MAPMAKER/QTL 1. 1 and PLABQTL 1.0 (SIM). Its allele which contributes to salt-tolerance was from ZYQ8. In addition, seven more QTLs which give additive effect on salt-tolerance are identified when using PLABQTL (CIM), and most of them were from JX17.