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Screening for Salinity Tolerance at the Seedling Stage of Rice in T. Aman, 2008

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

Abstract/ Executive Summary:

A study was conducted in plant physiology net house, Bangladesh Rice Research Institute to screen out genotypes tolerant to salinity at the seedling stage. Forty breeding lines were considered. Out of 40 genotype only five genotype namely IR58427-5B-15, BR7032-3B-1-1, BR7218-2B-3-1, IR65833-4B-17-1-3, and IR73055-8-1-1-3-1 showed tolerant to moderately tolerant (Score 3-5) at the seedling stage of rice under high (12dS/m) salinity stress. Rest of the genotype showed susceptible to highly susceptible (Score 7-9).

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

Location: Plant Physiology Nethouse, Bangladesh Rice Research Institute, Gazipur-1701

Start Date: 01-07-2008

End Date: 30-06-2009

Program Area: Risk Management in Agriculture

Commodity: Rice

Objectives:

To screen out genotypes tolerant to salinity at the seedling stage.

Methodology:

Furrow-Styrofoam plate underlined with nylon net floating in a tray having Yoshida's full strength culture solution was used for growing seedlings. Fourteen days after seeding, plants were salinized at 6 dS/m. The salinity level was raised upto 12 dS/m by increasing 2 dS/m at every alternate day. Pokkali and IR29 were used as tolerant and susceptible check, respectively. One set of plants were considered as control. While IR29 was in the process of senescence, visual score was made. Only alive plants were considered for the estimation of survival percentage

Source of Information: Proceedings of BRRI Annual Internal Review for 2008-2009)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Out of 40 genotype only five genotypes namely IR58427-5B-15, BR7032-3B-1-1, BR7218-2B-3-1, IR65833-4B-17-1-3, and IR73055-8-1-1-3-1 showed tolerant to moderately tolerant (Score 3-5) at the seedling stage of rice under high (12dS/m) salinity stress. Rest of the genotype showed susceptible to highly susceptible (Score 7-9).

Knowledge Management: Report/Proceedings