Scientia Agricultura Sinica ›› 2006, Vol. 39 ›› Issue (10): 2132-2137 .

• RESEARCH NOTES • Previous Articles     Next Articles

Marker-Assisted Selection for Brown Planthopper (Nilaparvata lugens Stål) Resistance Genes Bph14 and Bph15 in Rice

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  1. 湖北省农科院粮食作物研究所
  • Received:2005-08-12 Revised:2005-11-28 Online:2006-10-10 Published:2006-10-10

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Abstract: 【OBJECTIVE】Brown Planthopper (BPH), Nilaparvata lugens Stål, is a serious sucking insect pest of rice. Resistance to BPH is an important breeding objective in rice improvement programs.【METHOD】Bph14 and Bph15 have been identified in an introgression line B5 and mapped on chromosome 3 and chromosome 4, respectively. SSR markers MRG2329 linked to Bph14, and MS5 to Bph15, were used to select for some homozygous lines in a segregating population that derived from a cross between B5 and elite restores, 9311 and 1826. The resistance level to BPH of 38 lines was determined by using the mass seedling screening test.【RESULTS】The results indicated that 92.31% of 26 Bph14-single introgression lines showed moderate resistance to high resistance, 6 Bph15-single introgression lines showed resistance or high resistance and 6 pyramid lines (Bph14/Bph15) showed high resistance to BPH insects.【CONCLUSION】The survey revealed that marker-assisted selection is an efficient way for Bph14 and Bph15 selection in rice breeding programs.

Key words: Rice, Molecular marker-assisted selection (MAS), Brown planthopper

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