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Screening for Salinity Tolerance at the Seedling Stage of Rice Genotype, Aman, 2011

Dr. Rumena Yasmeen
Principal Scientific Officer
Plant Physiology Division,Bangladesh Rice Research Institute, Gazipur-1701

Dr. J. K. Biswas
Director (Admin and common service)
Bangladesh Rice Research Institute, Gazipur-1701

Abstract/ Executive Summary:

An experiment was conducted in Plant Physiology Net house, Bangladesh Rice Research Institute, Gazipur during the Aman season' 2011. Considering visual score and survivality among fifty four (54) genotype sixteen (16) genotype showed tolerant to moderately tolerant (score 3-5) at the seedling stage of rice under high (12dS/m) salinity stress which were IR77092-B-2R-B-48, IR61919-3B-7-2, IR61919-3B-14-3, IR84649-303-11-1-1-B, IR78761-B-SATB1-41-2, IR78761-B-SATB1-52-5, IR78761-B-SATB2-17-1, IR78761-B-SATB2-133-1, IR71895-3R-9-3-1, IR71866-3R-1-2-1, IR77674-B-20-1-2-1-3-6-4-AJY, IR77674-3B-8-2-2-12-5-AJY2, A69-1, AT401, BR7211-2B-65-1-1-23 and FL478. Rest of the genotype showed susceptible to highly susceptible (Score 7-9).

Keywords: Salinity, Rice, Tolerance, Visual score, Survivability.

Location: Plant Physiology Net house, Bangladesh Rice Research Institute, Gazipur

Start Date: 01-07-2010

End Date: 30-06-2011

Program Area: Variety and Species

Commodity: Rice

Objectives:

To observe visual score and survivability of rice genotype at the seedling stage under high salinity stress.

Methodology:

Pregerminated seeds were sown on nylon net fitted with styrofoam floating on Yoshida's full strength culture solution. After 3 days of sowing the seeds the solution was salinized upto 6 dS/m. The salinity raised upto 12 dS/m by increasing 2 dS/m every alternate day. In each tray FL478 and BRRI dhan29 were used as a tolerant and susceptible check, respectively. Visual score was made according to SES and alive plants were counted as soon as BRRI dhan29 started dying.

Source of Information: Proceedings of BRRI Annual Internal Review for 2010-2011)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Genotypic variation was observed among the tested materials.Considering visual score and survivality among fifty four (54) genotype sixteen (16) genotype showed tolerant to moderately tolerant (score 3-5) at the seedling stage of rice under high (12dS/m) salinity stress which were IR77092-B-2R-B-48, IR61919-3B-7-2, IR61919-3B-14-3, IR84649-303-11-1-1-B, IR78761-B-SATB1-41-2, IR78761-B-SATB1-52-5, IR78761-B-SATB2-17-1, IR78761-B-SATB2-133-1, IR71895-3R-9-3-1, IR71866-3R-1-2-1, IR77674-B-20-1-2-1-3-6-4-AJY, IR77674-3B-8-2-2-12-5-AJY2, A69-1, AT401, BR7211-2B-65-1-1-23 and FL478. Rest of the genotype showed susceptible to highly susceptible (Score 7-9).

Knowledge Management: Report/Proceedings