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Pedigree Nursery, Development of Bb Resistance Parental Lines of Hybrid Rice During T.aman,2013

Anowara Akter
Scientific Officer
Hybrid Rice Division, Bangladesh Rice Research Institute, Bangladesh, Gazipur-1701

M Jamil Hasan
Principal Scientific Officer
Hybrid Rice Division, Bangladesh Rice Research Institute, Gazipur-1701,Bangladesh.

Abstract/ Executive Summary:

A total of 75 F₅progenies of three crosses were grown at BRRI, Gazipur. Each progeny were transplanted in 5m² plot using single seedling per hill at a spacing of 20cm x20cm. Applications of fertilizers were applied @ with 150:100:70:60:10 kg/ha Urea, TSP, MP, gypsum and ZnSO₄ respectively. All TSP along with 1/4 urea and 2/3 MP were applied at final land preparation. Remaining urea were top dressed in three equal split at 15-20 and 35-40 days after transplanting, and at PI stage and rest of the 1/3 MP was applied during 2^nd top dress of urea. Recommended agronomic practices and intercultural operation were taken when necessary. A total of 10 F₆ progenies from the cross BR7B/IRBB65, 15 progenies from BR6723-1-1-2R/ IRBB60 and 15 progenies from IR69702-3-2-3R/ IRBB60 were selected as F₅ generation

Keywords: Pedigree populations, BLB

Location: BRRI,Gazipur

Start Date: 25-06-2013

End Date: 15-11-2013

Program Area: Variety and Species

Commodity: Rice

Objectives:

To select progenies with emphasis on earliness, intermediate height and high yield potential with BB resistance.

Methodology:

A total of 75 F₅progenies of three crosses were grown at BRRI, Gazipur. Each progeny were transplanted in 5m² plot using single seedling per hill at a spacing of 20cm x 20cm. Applications of fertilizers were applied @ with 150:100:70:60:10 kg/ha Urea, TSP, MP, gypsum and ZnSO₄ respectively. All TSP along with 1/4 urea and 2/3 MP were applied at final land preparation. Remaining urea were top dressed in three equal split at 15-20 and 35-40 days after transplanting, and at PI stage and rest of the 1/3 MP was applied during 2^nd top dress of urea. Recommended agronomic practices and intercultural operation were taken when necessary.

Source of Information: Proceedings of BRRI Annual Internal Review for 2013-2014

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

A total of 10 F₆ progenies from the cross BR7B/IRBB65, 15 progenies from BR6723-1-1-2R/ IRBB60 and 15 progenies from IR69702-3-2-3R/ IRBB60 were selected as F₅ generation

Knowledge Management: Report/Proceedings