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Screening of Rice Genotype as Affected by Salinity Stress for Whole Growth Period.

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 for whole growth period. Eight genotypes with BRRI dhan47 and IR29 (tolerant and susceptible ck, respectively) were used in this study. Among ten genotypes only two genotypes i.e. BR7109-5R-4 and BR7084-3R-39 were better compared to the others including tolerant ck. BRRI dhan47.

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

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

Start Date: 01-07-2008

End Date: 30-06-2009

Program Area: Variety and Species

Commodity: Rice

Objectives:

To screen out genotypes tolerant to salinity for whole growth period.

Methodology:

Eight genotypes with BRRI dhan47 and IR29 (tolerant and susceptible ck, respectively) were used in this study. Plants were grown in perforated plastic pots (drilled and lined with canvas) filled with grinded soil (10 kg/pot). The soil was fertilized with NPS and K @ 50,25,40 and 25 mg/kg soil. The pots were placed inside a bucket serving as water baths. Three to four pre-germinated seeds were sown at the soil surface of each pot. Two weeks after seeding, seedling were thinned to one per pot. After 21 days of sowing salinization was done at 6 dS/m by adding NaCl in the bucket, equivalent to 6-9 dS/mECe) in the soil. Water level was maintained daily (1 cm above soil surface) by adding ordinary tap water. At maturity plants were harvested and yield and yield components were considered.

Source of Information: Proceedings of BRRI Annual Internal Review for2008- 2009)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Among ten genotypes only two genotypes i.e. BR7109-5R-4 and BR7084-3R-39 were better compared to the others including tolerant ck. BRRI dhan47.

Knowledge Management: Report/Proceedings