Green Global
Foundation Journal
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BIOCHEMICAL ATTRIBUTES OF MUTANT RICE UNDER DIFFERENT SALINE LEVELS (Pages : 17 - 21)
M. Z .ISLAM, M. A. BASET MIA, A. AKTER AND M. H. RAHMANA pot experiment was conducted at the Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh to find out the biochemical attributes of mutant rice under varied saline levels during T-aman season from July to November 2003. Three rice genotypes viz. Q-31, Y-1281, and MR-219 were used as tests materials. The experiment was laid out in a Randomized Complete Block Design (RCBD) with four replications. Six salinity levels namely 15 dSm-1 , 12 dSm-1 , 9 dSm-1 , 6 dSm-1 , 3 dSm-1 with a control were imposed in this experiment. Results of the experiments clearly showed that biochemical characters such as total chlorophyll content, nitrate reductase activity, K+ and Ca++ etc. content of straw were reduced with increase levels of salinity compared to control. On the other hand, Na+ were increased with increasing salinity levels. Among the genotypes, MR-219 showed best performance in respect of salt tolerant up to 6 dSm-1 and showed Y-1281 intermediate status. The genotypes Q-31 and Y-1281 showed its susceptibility to salinity stress. Download