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Research Detail

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Dr. Md. Jamil hasan
Principal Scientific Officer
Head, Hybrid Rice Division, Bangladesh Rice Research Institute, Gazipur-1701

Observational nursery is the nursery from where apparently promising hybrids are come out. Comparing the tested entries with standard check variety which one expressed yield advantage more than 20% over check variety is considered as promising hybrids. Commercial seed production feasibility also assessed in the next season for its commercial viability in terms of hybrid seed production. Then trial is set up for preliminary yield trial, multilocation trials then submitted national hybrid rice yield trial for final evaluation.A total of 69 experimental hybrids were evaluated under observation trial. Twenty eight hybrids out of 69 were found yield advantage ranges from 0.72 to 2.67 t/ha over 3 conventional checks. The hybrid combination II32A/NewR5 showed highest (2.67t/ha) followed by BRRI9A/BRRI10R (2.04 t/ha) yield advantage over BRRI dhan33 with similar growth duration. Another hybrid combination II32A/NewR1 was found 2.46 t/ha yield advantage over BRRI dhan39 with similar growth duration.

  Experimental hybrid, heterosis, check variety
  BRRI HQ, Gazipur
  10-07-2008
  31-10-2008
  Variety and Species
  Rice

Selection of promising hybrids from test entries

Sixty nine (69) hybrids were evaluated with BRRI dhan31, BRRI dhan33 and BRRI dhan39 as check. Twenty one days old seedlings were transplanted in 2m2 area plot following augmented in RCB design using single seedling /hill. Spacing was 20 cm x15 cm. Fertilizers @ 150:100:70:60:10 kg/ha Urea, TSP, MP, gypsum and ZnSO4 respectively were applied.

  BRRI Annual Report 2008-2009
  
Funding Source:
1.  Government Budget:  25000/-
   25000/-

Twenty eight hybrids out of 69 were found yield advantage ranges from 0.72 to 2.67 t/ha over 3 conventional checks. The hybrid combination II32A/NewR5 showed highest (2.67t/ha) followed by BRRI 9A/BRRI 10R (2.04 t/ha) yield advantage over BRRI dhan33 with similar growth duration. Another hybrid combination II32A/NewR1 was found 2.46 t/ha yield advantage over BRRI dhan39 with similar growth duration. On the other hand, the hybrid combination D.ShanA/NewR2 possessed 1.67 t/ha higher yield over BRRI dhan31 with similar growth duration.

 

  Report/Proceedings
  

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