Identification of quantitative trait loci associated with resistance to brown planthopper in the indica rice cultivar Col.5 Thailand

文献类型： 外文期刊

第一作者： Sun, Lihong

作者： Sun, Lihong;Liu, Yuqiang;Jiang, Ling;Su, Changchao;Wang, Chunming;Zhai, Huqu;Wan, Jianmin

作者机构：

期刊名称：HEREDITAS （ 影响因子：3.271； 五年影响因子：2.807 ）

ISSN： 0018-0661

年卷期： 2007 年 144 卷 2 期

页码：

收录情况： SCI

摘要： 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.

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