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Assessment of Blast Resistant Multiline Variety of Ir64

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

Abstract/ Executive Summary:

An investigation was carried out to develop suitable blast resistant rice variety for Bangladesh.NILs of IR64 harboring blast resistant genes developed by JIRCAS, Japan were tested in Bangladesh condition. According to literature, races of blast pathogen mostly variety specific and maintain the same race is an integral part of successful screening of blast resistant materials. To maintain the blast races on IR64, the variety was grown in the same field consecutively for 3 years. Last T. Aman /2014season, IR64 was cultivated in 0.5 ha of land of BRRI HQ, Gazipur. Next year, that land will also be used for IR64 cultivation. Races of the blast pathogen were evaluated in every season using differential varieties following standard protocol. Finally this land will be used for blast resistant multiline variety selection of IR64. Blast screening hub with a view to develop a congenial environment for rice blast resistant materials screening has already established at BRRI HQ, Gazipur with the collaboration of JIRCAS, Japan. Around 100 neck blast infected panicles were collected from the field of IR64. IR64 produced an average yield of 4.2 t/ha. The seeds of blast resistant multiline varieties had already collected from JIRCAS, Japan and now are multiplying for large scale evaluation. There is a possibility to select any line as first blast resistant rice variety in Bangladesh.

Keywords: Rice, Blast, Resistant multiline, Variety IR64

Location: BRRI RS Farm, Barisal

Start Date: 00-00-2014

End Date: 00-00-2015

Program Area: Pest Management

Commodity: Rice

Objectives:

To develop suitable blast resistant rice variety for Bangladesh.

Methodology:

NILs of IR64 harboring blast resistant genes developed by JIRCAS, Japan were tested in Bangladesh condition. According to literature, races of blast pathogen mostly variety specific and maintain the same race is an integral part of successful screening of blast resistant materials. To maintain the blast races on IR64, the variety was grown in the same field consecutively for 3 years. Last T. Aman /2014 season, IR64 was cultivated in 0.5 ha of land of BRRI HQ, Gazipur. Next year, that land will also be used for IR64 cultivation. Races of the blast pathogen were evaluated in every season using differential varieties following standard protocol. Finally this land will be used for blast resistant multiline variety selection of IR64.

Source of Information: BRRI Annual Report 2014-15.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Blast screening hub with a view to develop a congenial environment for rice blast resistant materials screening has already established at BRRI HQ, Gazipur with the collaboration of JIRCAS, Japan. Around 100 neck blast infected panicles were collected from the field of IR64. IR64 produced an average yield of 4.2 t/ha. The seeds of blast resistant multiline varieties had already collected from JIRCAS, Japan and now are multiplying for large scale evaluation. There is a possibility to select any line as first blast resistant rice variety in Bangladesh.

Knowledge Management: Report/Proceedings