Breeding for iron-defense rice in Bangladesh
2003
Kabir, K.A. | Haque, M. | Hossain, M.A. | Dipti, S.S. | Tetens, I.
Fifty rice varieties were collected under different categories from different sources and were grown in the Bangladesh Rice Research Institute (BRRI) field during the 2001 transplanted aman season (July-November). Precautions were taken during harvest and further processing to avoid any mineral contamination. All samples were handpounded before being analyzed for their content of iron and zinc. The iron and zinc content varied considerably within the different categories of rice measured. Overall, the local varieties had a higher content of iron and zinc than the high-yielding varieties. Furthermore, our study confirms that aromatic rice varieties in general have a higher content of iron and zinc than nonaromatic rice varieties. A positive correlation between the iron and zinc content of milled rice was found in the varieties measured. Based on the preliminary iron and zinc data, about 34 varieties were selected as parent materials to be used in the breeding program. A crossing program has been undertaken by the Breeding Division of BRRI to incorporate/accumulate iron-density regulatory genes in popular modern varieties of rice.
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