Identification of quantitative trait loci associated with resistance to brown planthopper in the indica rice cultivar Col.5 Thailand.
Identification of quantitative trait loci associated with resistance to brown planthopper in the indica rice cultivar Col.5 Thailand.
复制标题
籼稻品种 Col.5 Thai 中与褐飞虱抗性相关的数量性状位点的鉴定。
DOI：
10.1111/j.2006.0018-0661.01932.x
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发表时间：
2007
期刊：
影响因子：
2.7
通讯作者：
J. Wan
中科院分区：
文献类型：
--
作者：
Lihong Sun;Yuqiang Liu;Ling Jiang;C. Su;Chunming Wang;H. Zhai;J. Wan
褐飞虱是危害水稻的重要害虫之一。在这项研究中，我们构建了一个连锁图，以确定褐飞虱抗性基因的位点，使用的F（2）群体之间的杂交籼稻品种，“Col.5泰国”，和一个敏感品种“02428”。用147个F（3）家系进行抗虫性鉴定，并从相应F（3）家系的表型推断每个F（2）植株的基因型。在第2染色体上检测到2个QTL（解释了29.4%的表型变异）和6个QTL（解释了46.2%的表型变异）与褐飞虱抗性相关。染色体位置和反应的BPH生物型的比较表明，在染色体6上的基因是不同于至少18的19个以前确定的BPH抗性基因。这两个基因对褐飞虱的抗性有很大的影响，可能是水稻抗褐飞虱育种的有用资源。
The brown planthopper (BPH) is one of the most serious insect pests of rice throughout Asia. In this study, we constructed a linkage map to determine the locus for BPH resistance gene, using an F(2) population from a cross between a resistant indica cultivar, 'Col.5 Thailand', and a susceptible cultivar '02428'. Insect resistance was evaluated using 147 F(3) families and the genotype of each F(2) plant was inferred from the phenotype of corresponding F(3) families. Two QTLs was detected on chromosome 2 (explains 29.4% phenotypic variation) and 6 (46.2% variation explained) associated with resistance to BPH in the mapping population. Comparison of the chromosomal locations and reactions to BPH biotypes indicated that the gene on chromosome 6 is different from at least 18 of the 19 previously identified BPH resistance genes. These two genes have large effects on BPH resistance and may be a useful BPH resistance resource for rice breeding programs.