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Evaluation for Submergence Tolerance.

Helal Uddin Ahmed
Senior Scientific Officer
Plant Breeding Division, BRRI, Joydebpur, Gazipur

M A Mazid
Scientific Officer
Plant Breeding Division, BRRI, Joydebpur, Gazipur

Abstract/ Executive Summary:

Objective of this study was to identification of donors for submergence tolerance and to observe the submergence tolerance status breeding lines in controlled condition. Twenty six breeding lines supplied by Yanagihara were screened against the tolerant check FR13A and the susceptible check BR5. The water depth in tank was leveled to 20 cm in the 1st day and increased to 40 cm in the 2nd day. The water depth was further increased to a level until all the plants completely submerged in the 3rd day. The plants were allowed to complete submergence for 10 days. Water was drained out gradually by 3 consecutive 3 days. The crop was then allowed to grow for seven days and the data on survival and recovery were recorded. The SES of IRRI was followed to score the submergence tolerance in respect to survival parentage. The top five scorers compared to FR13A. IR67520-B-14-1-2-2-2 showed poor score and survival but very good recovery.

Keywords: Submergence tolerance, Survival parentage, Controlled condition,

Location: BRRI, Gazipur.

Start Date: 01-07-2004

End Date: 30-06-2005

Program Area: Variety and Species

Commodity: Rice

Objectives:

Identification of donors for submergence tolerance and to observe the submergence tolerance status breeding lines in controlled condition.

Methodology:

Twenty six breeding lines supplied by Yanagihara were screened against the tolerant check FR13A and the susceptible check BR5. The sprouted seeds were sown in lines in steel trays containing puddle soil mixed with Urea, TSP, MP, Gypsum @ 5-3-3-2 g/tray. Twenty plants per entry were grown in each line. The lines were 10 cm apart. at 25 days of seedling age, the trays were placed in the concrete tank. The water depth in tank was leveled to 20 cm in the 1st day and increased to 40 cm in the 2nd day. The water depth was further increased to a level until all the plants completely submerged in the 3rd day. The plants were allowed to complete submergence for 10 days. Water was drained out gradually by 3 consecutive 3 days. The crop was then allowed to grow for seven days and the data on survival and recovery were recorded.

Source of Information: BRRI. Proceedings of the BRRI Annual Internal Review for 2004-2005. Bangladesh Rice Research Institute (BRRI). Gazipur -1701.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The top five scorers compared to FR13A. IR67520-B-14-1-2-2-2 showed poor score and survival but very good recovery.

Knowledge Management: Report/Proceedings