RESPONES OF SOME AROMATIC RICE VARIETIES TO SALTSTRESS

Abstract

A pot experiment with six aman rice varieties viz. BRRI dhan34, BRRI dhan38, Binadhan-9, Binadhan-13, Kalijira and Rajbhogh was conducted at the experimental shed of the Department of Agronomy, Sher-e Bangla Agricultural University, Dhaka during the period of June- December, 2014 to investigate the effect of salinity on the growth, physiology and yield of some aromatic rice under different salt stress condition. The experiment was carried out with five salt stress treatments viz. control (N 0 ), 25 mM (N 25 ), 50 mM (N ), 75 mM (N 75 ) and 100 mM (N ). Salt stresses significantly reduced the plant height and tiller hill -1 100 of six varieties at all growth duration. Leaf relative water content (RWC) and chlorophyll (chl) content also reduced due to salt stress. At harvest, salt stresses reduced the effective tiller hill -1 , number of filled grain panicle -1 , 1000 grain weight, grain yield and straw yield of six varieties. Binadhan-9 and BRRI dhan38 performed better under saline condition. On the other hand, local variety Kalijira did not perform well under saline condition.

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