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Evaluation of Promising Hybrids During Boro 2011-12 Season

Laila Ferdousi Lipi
Scientific Officer
Hybrid Rice Division, BRRI, Gazipur

Dr.Md.Jamil Hassan
Principal Scientific Officer and Head
Hybrid Rice Division,BRRI,Gazipur

Abstract/ Executive Summary:

Rice improvement for high yield is important to increase productivity of the crop. The success of breeding program depends on the choice of best parents and best combination. 94 experimental hybrids were grown in augmented design to select promising hybrids with high yield potential and desirable traits. The desirable traits were plant height (cm), number of effective tillers/hill, days of first flowering, spikelet fertility (%), panicle length (cm), thousand seed weight (gm), individual panicle weight, grain type and days to maturity. Five standard check varieties were used namely BRRI dhan28 , BRRI dhan29 , BRRI dhan50 , BRRI hybrid dhan2 and BRRI hybrid dhan3. Out of 94 hybrids 7 hybrid combinations Jin23A/PR326 , Jin23A/PR344, BR10A/BR26R, BR10A/PR506, BR11A/PR326, GuiA/BR15R and WanA/BR22 were selected that performed better than checks. The augmented designs are efficient in the large number of population.

Keywords: Promising hybrids, Observational trial, Spikelet fertility, Boro season

Location: BRRI,Gazipur

Start Date: 10-12-2011

End Date: 00-00-2012

Program Area: Variety and Species

Commodity: Rice

Objectives:

Selection of promising hybrids

Methodology:

Ninety four (94) F₁s hybrids (Fine grain, High yield with medium grain) were evaluated along with 5 standard check varieties. Thirty five days old seedlings were transplanted in 2m² area plot following augmented design using single seedling per hill at a spacing of 20 cmx15 cm. Incase of augmented design controls (check varieties) are replicated in a standard experimental design and new treatments (genotypes) are not replicated, or have fewer replicates than the checks – they augment the standard design.Fertilizer dose was applied @ 270:130:120:70:10 Urea- TSP-MP- Gypsum- Zn SO₄kg/ha respectively. Inter-cultural operations and other activities were done where necessary.

Source of Information: BRRI Annual Report, 2011-2012, page no.62, BRRI, Gazipur-1701, Bangladesh

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Seven (7) promising hybrid combinations namely Jin23A/PR326 , Jin23A/PR344, BR10A/BR26R, BR10A/PR506, BR11A/PR326, GuiA/BR15R and WanA/BR22R were selected based on satisfactory yield advantage and others yield associated traits over standard check varieties. Seed production feasibility will be tested for further advancement

Knowledge Management: Report/Proceedings