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Identification of Breeding Materials for High Temperature Tolerance.

Md. Abdullah-Al-Mahbub
Scientific officer
Plant Physiology Division, BRRI, Gazipur

Dr. Serajul Islam
CSO and Head
Plant Physiology Division, BRRI, Gazipur

Abstract/ Executive Summary:

The study was conducted at BRRI, Gazipur. The study was conducted with the objective of to evaluate breeding materials for low spikelets sterility at high temperature. From this study it was found that QI GUI ZHAN and BM9820 were found tolerant to high temperature at reduction division stage and heading stage.

Keywords: High temperature tolerance lines, Spikelets sterility, Rice.

Location: Plant Physiology Division, BRRI, Gazipur

Start Date: 00-07-2004

End Date: 00-06-2005

Program Area: Variety and Species

Commodity: Rice

Objectives:

To evaluate breeding materials for low spikelets sterility at high temperature.

Methodology:

The study was conducted at BRRI, Gazipur. Thirty days old seedlings of 17 breeding materials including 3 checks were transplanted in pots in 3 sets following CRD with three replications. First set was received high temperature treatment at reduction division stage, the 2nd set was received high temperature at heading and stage and third set was control where plants were grown in normal weather condition.

Source of Information: Proceedings of the BRRI Annual Internal Review for 2004-2005 (Held on 18-22 December 2005) Bangladesh Rice Research Institute (BRRI), Gazipur -1701.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Filled grain number per panicle: The highest filled grain was found in control treatment among the 3 treatment followed by the 2nd set where high temperature induced at heading stage. The lowest filled grain was found 1st set where high temperature induced at reduction division stage irrespective of the varieties. Among the variety, the highest filled grain was found BM 9820 and QI GUI ZHAN produced the heaviest grain in all the treatments. Grain weight: Reduction of grain weight was the highest when high temperature was included at reduction division stage. Among the variety, QI GUI ZHAN produced the heaviest grain in all the treatment. Sterility (%): Among the tested lines and irrespective of the treatments, the lowest percent sterility was found in QI GUI ZHAN and BM 9820 produced was lower than the check varieties.

Knowledge Management: Report/Proceedings