PHENOTYPIC STUDY OF RICE LANDRACES OF BANGLADESH FOR SALT TOLERANCE AT SEEDLING STAGE

S Mukta, K M Nasiruddin and S R Rahman
Journal of the Sylhet Agricultural University, Volume 3, Issue 2, 2016, Pages 299-306

Abstract:

The environmental stresses such as salinity (soil or water) are serious obstacles for field crops especially in the arid and semi-arid tracts of the world. In order to investigate impact of salinity stress on rice seed germination and early seedling stage conducted at glasshouse and biotechnology laboratory of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh-2200. A total number of 80 rice germplasms were used to evaluate for salinity tolerance at seedling stage following IRRI standard protocol. Hydroponic system was used to evaluate salt tolerance of these germplasms using nutrient solution and controlled environment. The modified standard evaluation system (SES) of IRRI was used to score the discriminate of the tolerant, moderately tolerant and susceptible rice lines. Scoring was done at 12th, 18th, 30th day after salinization. Among the germplasms, 12 were found as salt tolerant, 13 were found as moderately tolerant, 26 were susceptible and 29 were highly susceptible. The plant height, root length and total dry matter (TDM) weight are greatly affected by the salinity. Considering percent reduction in plant height, root length and total dry matter weight, it can be concluded that Hogla, Patnai, Jamai Naru, FL378, Bazra Muri and Jota Balam were tolerant.

Keywords:

Rice, salinity, seedling


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S Mukta, K M Nasiruddin and S R Rahman. 2016. PHENOTYPIC STUDY OF RICE LANDRACES OF BANGLADESH FOR SALT TOLERANCE AT SEEDLING STAGE, Journal of the Sylhet Agricultural University 3(2): 299-306.