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Improvement of Brown Plant Hopper Resistant Rice in Lower Northern Region of Thailand

Improvement of Brown Plant Hopper Resistant Rice in Lower Northern Region of Thailand Using Mass Aided Selection. Group 5. Objectives. To improve the brown plant hopper resistant traits of rice, Chinat 1 , in the lower northern of Thailand. Materials and methods.

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Improvement of Brown Plant Hopper Resistant Rice in Lower Northern Region of Thailand

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  1. Improvement of Brown Plant Hopper Resistant Rice in Lower Northern Region of Thailand Using Mass Aided Selection Group 5

  2. Objectives To improve the brown plant hopper resistant traits of rice, Chinat 1, in the lower northern of Thailand

  3. Materials and methods The recipient is Chinat 1 Pedigree X BKN6995-16-1-1-2 IR13146-158-1/ IR15314-43-2-3-3 IR11738 X IR2061-628-1-6-4-3 bph4 Babawee X IR4432-53

  4. Chr 6 Chr 12 Bph3 bph4* Bph10 Materials and methods The donors: • Abhaya (Ab X KDML) BC4/F6 (540-2-1-8) • bph4 on Chr. 6* • Bph10 on Chr. 12 • Rathu Heenati(Rh X KDML) BC2-F3 • Bph3 on Chr. 6

  5. Microsat. Marker tried for Bph 3 First set Second set Third set

  6. Chr 6 rm170 rm190 Bph3 rm586 bph4 Microsat. Marker tried for Bph 3 Heterozygous evident of Bph3 SSR flanking markers for CHN1 and Rathu

  7. Chr 6 rm225 Bph3 rm314 bph4 rm217 rm50 rm253 rm136 Microsat. Marker tried for bph 4 Heterozygous evident of bph4 SSR flanking markers for CHN1* X Abhaya

  8. Chr 12 rm179 rm277 rm260 Bph10 rm309 rm235 Microsat. Marker tried for Bph10 Heterozygous evident of Bph10 SSR flanking markers for CHN1 X Abhaya

  9. Bc introgressed line Bc introgressed line April,2004 Scheme Augast,2004 December, 2004 End of program April, 2005

  10. Positions of genes of interest

  11. Expectation The elite improved Chinat 1 variety carries many brown plant hopper resistant genes which provide higher protection level to brown plant hopper better and more effective than the original one

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