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Pakistan Journal of Biological Sciences

Year: 2003 | Volume: 6 | Issue: 8 | Page No.: 774-776
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Authors

M. A. Siddiquee

S.K. Biswas

N. Ferdous

Keywords

Research Article

Changes of Dry Matter Content and Nutrients in Developing Rice Grain

M. A. Siddiquee, S.K. Biswas and N. Ferdous
The study was conducted to find the rate of accumulation of dry matter, protein, amylose and total amino acid in developing grain in boro season of 1997. Moisture content in paddy varied from 24.0&madsh;57.0% in Hbj IV and 24.0&madsh;61.0% in BR3. At 4 DAF, HbjIV and BR3 had 5.4 and 4.4 mg/paddy dry matter respectively and the accumulated dry matter in paddy was 22.5 and 29.3 mg respectively in HbjIV and BR3 after 20 DAF. Moisture content was higher in brown rice than paddy during grain development. Accumulated dry matter in brown rice varied from3.1-16.7 mg in Hbj IV and 1.3&madsh;22.7 mg in BR3. Amylose content accumulation rate in brown rice was slower in BR3 compared to Hbj IV during first 8 days. Total protein and total free amino acid in grains of brown rice increased up to 16 DAF in the tested varieties.
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