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Source Nursery Against Blb During Boro,2013-14

Anowara Akter
Scientific Officer
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 Bangladesh, Gazipur-1701

Abstract/ Executive Summary:

Bacterial leaf blight (BB), caused by Xanthomonas oryzae pv. oryzae (Xoo), is a devasing disease in the rice growing countries of Asia. Bacterial blight is a major disease of a hybrid rice. With respect to Increasing demand for rice especially in developing countries hybrid rice is considered as a viable alternative technology for breaking the present yield ceiling of modern varieties. Hence, we are collected BB resistance breeding advance lines of diverse source to added this nursery for find out the prospective maintainers and restorers. In this experiment to find out that a total of 10 BB resistance IRRI materials along with 2CMS lines were used. Parents were grown in three (3) sets with the spacing of 20x20cm. The CMS lines were planted in 4 seeding dates with an interval of 5 days to synchronize with the early, medium and late source nursery entries. Hand crosses were made to produce 50-150 F₁ seeds from each cross.Eleven (11) testcrosses (F1s) were made using 2 CMS lines during this season.

Keywords: BLB, Source Nursery

Location: BRRI, Gazipur

Start Date: 15-11-2013

End Date: 20-05-2014

Program Area: Variety and Species

Commodity: Rice

Objectives:

Identification of prospective maintainers and restorers of diversified origin for making experimental rice hybrids.

Methodology:

A total of 10 BB resistance IRRI materials along with 2CMS lines were used. Parents were grown in three (3) sets with the spacing of 20x20cm. The CMS lines were planted in 4 seeding dates with an interval of 5 days to synchronize with the early, medium and late source nursery entries. Hand crosses were made to produce 50-150 F₁ seeds from each cross.

Source of Information:

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Eleven (11) testcrosses (F1s) were made using 2 CMS lines during this season. This materials will be evaluated in next season of test cross nursery.

Knowledge Management: Report/Proceedings