中国水稻科学2003，Vol.17Issue(z1)：37-46,10.
应用DNA标记分析稻飞虱的抗性基因
Applications of DNA-Markers to Analyze Rice Planthopper Resistance Genes
摘要
Abstract
Recent achievements in molecular tagging and mapping of genetic loci for rice planthopper resistance in rice were briefly reviewed. Four rice genes for the brown planthopper (BPH) resistance, Bph 1, bph 2, bph 4 and Bph 9, and four putative BPH-resistance genes, Bph 10(t), bph 11(t), bph 12(t) and Bph 13(t), introgressed from wild rice species with different genomes have so far been mapped onto 5 of 12 rice chromosomes. Of them, Bph 1, bph 2, Bph 9 and Bph 10(t), have been found forming a linkage block on the long arm of rice chromosome 12, in the vicinity of about 25 cM from the bph 2 locus. Several QTLs affecting field resistance and ovicidal activities have also been detected. The whitebacked planthopper (WBPH) resistance genes, Wbph 1, Wbph 2 and Wbph 6(t) have been tagged or tentatively mapped. QTLs for ovicidal resistance to WBPH in japonica rice have been analyzed in detail. The effective QTL has been detected on the short arm of chromosome 6, and a dominant ovicidal gene Ovc has been identified at the locus. One QTL on chromosome 1 and two QTLs on chromosome 5 increased WBPH egg mortality in the presence of ovicidal gene Ovc. QTL mapping with DNA-markers will increase our understandings of complicated physiological and genetic mechanisms in varietal resistance in crop plants. Marker-assisted selection will facilitate to develop insect resistant crops with polygenic basis, and to introduce valuable insect resistance traits from wild relatives into improved crop varieties in order to increase durability and genetic diversity of insect resistance in the crops.关键词
水稻/品种抗性/抗性基因/褐飞虱/白背飞虱/田间抗性/数量性状位点/分子标记Key words
rice/varietal resistance/resistance gene/brown planthopper/whitebacked planthopper/field resistance/quantitative trait loci/molecular marker分类
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寒川一成,曾娟,钱忠海..应用DNA标记分析稻飞虱的抗性基因[J].中国水稻科学,2003,17(z1):37-46,10.基金项目
JIRCAS国际合作研究项目(B3333101). （B3333101）
