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Changing Pattern of Rice Breeding in Bangladesh

M A Kabir
Principal Scientific Officer
BRRI, Gazipur - 1701

M A Salam
Principal Scientific Officer
BRRI, Gazipur - 1701

Abstract/ Executive Summary:

In Bangladesh, rice research started in 1911. Breeding research of the past 80 years (1911- 1991) is reviewed. Four strategic changes have been identified during these period : pureline breeding (1911-1935), hybridization between tall indicas (1936-1947), crossing between indicas and japonicas (1948-1965), and introduction of semidwarf and development of modern variety (MV) of rice (1966-1991). In total, 52 pureline varieties were released for Aus, transplanted Aman (T. Aman), Boro and deepwater rice growing situations. Among them, 15 varieties have been popularly grown in different seasons. Eleven varieties were developed from crossing between tall indicas, but among them only Duller (Duma i x Larkoch) was persisted . Crossing between indicas and iaponicas showed discouraging results. A large number of varieties were introd uced from different rice growing countries. Among exotic collections, IRS, Purbachi and Pajam have earned popularity to farmers. These varieties possess semidwarf plant type (except Pajam), and are responsive to fertilizer and lodging tolerance. BRRI has developed several semidwarf rice varieties eg BRl and BR3. This semidwarf plant habit show limitations to expanding MV rices in farmer fields specially in the T. Aman season. Breeders have been gradually changing this semidwarfs (<110cm) to intermediate plant type (110-130) without losing yield potentials and lodging tolerance to adjust with the local environment .

Keywords: Changing pattern, Rice Breeding, Improvement programme

Location: Bangladesh Rice Research Institute, Gazipur

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Rice

Objectives:

To reviews the salient features of the rice improvement programme of the past 80 years (1911-1991) in Bangladesh

Methodology:

The information were collected by reviewing of books, journals, articles, published materials related to rice production and library search and personal contact with different personnel.

Source of Information: Bangladesh Rice J. 6(1&2) : 25-29, 1995, ISSN 1025-7330

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In total, 52 pureline varieties were released for Aus, transplanted Aman (T. Aman), Boro and deepwater rice growing situations. Among them, 15 varieties have been popularly grown in different seasons. A large number of varieties were introduced from different rice growing countries. Among exotic collections, IR8, Purbachi and Pajam have earned popularity to farmers. These varieties possess semidwarf plant type (except Pajam), and are responsive to fertilizer and lodging tolerance. BRRI has developed several semidwarf rice varieties eg BRl and BR3. This semidwarf plant habit show limitations to expanding MV rices in farmer fields specially in the T. Aman season.

Knowledge Management: Journal