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Assessment of Blast Resistant Multiline Variety of Ir49830 Suitable for Tidal Non-saline Sub-ecosystem

Md. Rejwan Bhuiyan
Senior Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute,Gazipur-1701, Bangladesh

M A Latif
Principal Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

Md. Ansar Ali
Chief Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

An investigation was carried out to develop suitable blast resistant rice variety for tidal non-saline sub-ecosystem. NILs of IR49830 harboring blast resistant genes Pish, Pi9 and Pita-2 were selected as suitable materials from the last year T. Aman experiment at BRRI RS, Barisal. For further validation, in T. Aman/2014 season, these lines were grown in farmers’ field of Barisal region. The land under T. Aus–T. Aman–Fellow cropping pattern was selected for experimentation. Sadamota or other popular variety practiced by local farmers was used as check. Fertilizers and other cultural practices were done as per BRRI recommendation. Urea Super Granule (USG) were used for N application. Tentative date of seeding is first week of July and 50-60 day old seedlings were transplanted in field. Disease reactions especially against blast were observed critically. Considering the disease reaction and agronomic acceptance three lines such as IRBL9-W, IRBLta2Pi and IRBLsh-T (containing both blast and submergence resistant gene(s) along with taller seedling height) were found suitable for tidal non saline eco-system. Among them IRBLsh-T line produced highest yield of 5.01 and 4.88 t/ha in BRRI R/S, Barisal and farmers field at Bakergonj, Barisal, respectively. Further investigations especially G x E interaction is essential before selecting of these materials as prospective.

Keywords: Rice, Blast, Resistant multiline, IR49830

Location: BRRI Barisal, Gazipur

Start Date: 00-00-2014

End Date: 00-00-2014

Program Area: Pest Management

Commodity: Rice

Objectives:

To develop suitable blast resistant rice variety for tidal non-saline sub-ecosystem.

Methodology:

NILs of IR49830 harboring blast resistant genes Pish, Pi9 and Pita-2 were selected as suitable materials from the last year T. Aman experiment at BRRI RS, Barisal. For further validation, in T. Aman /2014 season, these lines were grown in farmers’ field of Barisal region. The land under T. Aus–T. Aman–Fellow cropping pattern was selected for experimentation. Sadamota or other popular variety practiced by local farmers was used as check. Fertilizers and other cultural practices were done as per BRRI recommendation. Urea Super Granule (USG) were used for N application. Tentative date of seeding is first week of July and 50-60 day old seedlings were transplanted in field. Disease reactions especially against blast were observed critically.

Source of Information: BRRI Annual Report 2014-15.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Considering the disease reaction and agronomic acceptance three lines such as IRBL9-W, IRBLta2Pi and IRBLsh-T (containing both blast and submergence resistant gene(s) along with taller seedling height) were found suitable for tidal non saline eco-system. Among them IRBLsh-T line produced highest yield of 5.01 and 4.88 t/ha in BRRI R/S, Barisal and farmers field at Bakergonj, Barisal, respectively. Further investigations especially G x E interaction is essential before selecting of these materials as prospective.

Knowledge Management: Report/Proceedings