Mapping of a major resistance gene to the brown planthopper in the rice cultivar Rathu Heenati
文献类型: 外文期刊
第一作者: Sun, LH
作者: Sun, LH;Su, CC;Wang, CM;Zhai, HQ;Wan, JM
作者机构: Nanjing Agr Univ, Natl Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China;Nanjing Agr Univ, Natl Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China; Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
关键词: Bph17;brown planthopper resistance;SSR;QTL analysis;Oryza sativa L.
期刊名称:BREEDING SCIENCE ( 2020影响因子:2.086; 五年影响因子:2.632 )
ISSN: 1344-7610
年卷期: 2005 年 55 卷 4 期
收录情况: SCI
摘要: A Sri Lankan indica rice (Oryza sativa L.) cultivar Rathu Heenati was found to be resistant to all the four biotypes of the brown planthopper (BPH) (Nilaparvata lugens Stal). In the present study, we constructed a linkage map to identify the locus (loci) for the BPH resistance genes, using an F-2 population from a cross between Rathu Heenati and a susceptible cultivar 02428. Insect resistance was evaluated using 156 F-2:3 lines and the genotype of each F-2 plant was inferred from the phenotype of the corresponding F-2:3 lines. Three loci detected by QTL (quantitative trait locus) analysis, were assigned to chromosomes 3, 4 and 10. The phenotypic variance of the three QTLs indicated that the QTL on chromosome 4 is a major BPH resistance gene in Rathu Heenati. Through linkage analysis, it was found that this BPH resistance gene was located between two SSR markers RM8213 and RM5953 on the short arm of chromosome 4, with map distances of 3.6 cM and 3.2 cM, respectively. This gene, tentatively designated as Bph17, should be useful for the breeding of varieties resistant to BPH in a marker-assisted selection (MAS) program.
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