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Evaluation of Some Selected Rice Germplasms of BRRI Gene Bank for Cold Tolerance Under Natural Condition

Dr. Md Mamunur Rashid
Senior Scientific Officer
Plant Physiology Division, BRRI, Gazipur-1701, Bangladesh

Dr. Rumena Yasmeen
Principal Scientific Officer
Plant Physiology Division, BRRI, Gazipur-1701, Bangladesh

Dr. Jiban Krishna Biswas
DG
Plant Physiology Division, BRRI, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

Rice germplasms stored in gene bank might have stress tolerant gene which should be identified through germplasm cleanning. We screened 100 germplasms for cold tolerance at seeddling stage and selected 10 genotypes. Those genotypes were evaluated in natural field condition for whole growth period at Bangladesh Rice Research Institute Gazipur. Seedling vigour of tested rice germplasms of BRRI gene bank was good for both October and November seeding but their phenotypic acceptance both at vegetative (before flowering) and flowering stage was much inferior than check varieties (BR18, BRRI dhan28 and BRRI dhan36). All the rice germplasms of BRRI gene bank produced very poor yield than checks due to poor vegetative growth and higher percentage of sterility.

Keywords: Cold-tolerance, Rice, Genotypes

Location: Experimental field, BRRI Gazipur

Start Date: 01-09-2013

End Date: 30-06-2014

Program Area: Variety and Species

Commodity: Rice

Objectives:

To evaluate rice germplasms of BRRI gene bank selected earlier as cold tolerant at seedling stage

Methodology:

Ten rice germplasms of BRRI gene bank (Acc no.- 5, Acc no-23, Acc no-32, Acc no.-33, Acc no.-38, Acc no.-43, Acc no.-169, Acc no.-177, Acc no.-197 and Acc no.-202) along with BRRI dhan28, BR18 and BRRI dhan36 were evaluated in BRRI farm Gazipur during boro 2013-14 season. There were 3 seeding dates 15 October, 30 October and 15 November 2013 so that crop suffers from cold both at seedling and reproductive stages. Thirty day old seedlings were transplanted at 20 cm x20 cm spacing. Split plot design was used with three replications. Data on different growth parameters, yield and yield components of rice genotypes were recorded and were analyzed by using Crop Stat software.

Source of Information: Proceedings of the BRRI Annual Internal Review for 2013-2014

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

All tested BRRI gene bank germplasms showed better seedling vigour than checks BR18, BRRI dhan28 and BRRI dhan36, but they produced very lower yield than checks .

Knowledge Management: Report/Proceedings