| 000 | 03649nab a22004697a 4500 | ||
|---|---|---|---|
| 001 | G82922 | ||
| 003 | MX-TxCIM | ||
| 005 | 20240919021147.0 | ||
| 008 | 210908s2005 xxu|||p|op||| 00| 0 eng d | ||
| 022 | _a1520-5118 (Online) | ||
| 022 | _a0021-8561 | ||
| 024 | 8 | _ahttps://doi.org/10.1021/jf040238x | |
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 090 | _aCIS-4606 | ||
| 100 | 1 |
_aWelch, R.M. _920316 |
|
| 245 | 1 | 0 | _aPotential for improving bioavailable zinc in wheat grain (Triticum species) through plant breeding |
| 260 |
_aWashington, DC (USA) : _bAmerican Chemical Society, _c2005. |
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| 340 | _aPrinted|Computer File | ||
| 500 | _aPeer review | ||
| 500 | _aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0021-8561 | ||
| 520 | _aA “whole-body” radioassay procedure was used to assess retention and absorption by rats of Zn in mature kernels of whole grain wheat harvested from 28 genotypes (Triticum spp.) grown in nutrient solution supplied with 2 μM ZnSO4 radiolabeled with 65Zn. Grain-Zn concentration differed among genotypes and ranged from 33 to 149 μg g-1 of dry weight (DW); similarly, grain-Fe concentration varied ∼4-fold, from 80 to 368 μg g-1 of DW. Concentrations of Zn and Fe in the grain were positively correlated. Therefore, selecting genotypes high in grain-Zn also tends to increase grain-Fe concentration. Concentrations of myo-inositolhexaphosphate (phytate) in the wheat grain varied from 8.6 to 26.1 μmol g-1 of DW. Grain intrinsically labeled with 65Zn was incorporated into test meals fed to Zn-depleted rats. All rats readily ate the test meals, so that Zn intake varied directly with grain-Zn concentration. As determined by the percentage of 65Zn absorbed from the test meal, the bioavailability to rats of Zn in the wheat genotypes ranged from about 60 to 82%. The amount of bioavailable Zn (micrograms) in the grain was positively correlated to the amount of Zn accumulated in the grain. There was a significant negative correlation between grain-phytate levels and percentage of Zn absorbed from the wheat grain, but the effect was not large. These results demonstrate that concentrations of Zn in whole-wheat grain, as well as amounts of bioavailable Zn in the grain, can be increased significantly by using traditional plant-breeding programs to select genotypes with high grain-Zn levels. Increasing the amount of Zn in wheat grain through plant-breeding contrivances may contribute significantly to improving the Zn status of individuals dependent on whole grain wheat as a staple food. | ||
| 536 | _aConservation Agriculture Program | ||
| 546 | _aText in English | ||
| 591 | _a0601 | ||
| 594 | _aINT1421 | ||
| 650 | 7 |
_2AGROVOC _91315 _aZinc |
|
| 650 | 7 |
_2AGROVOC _911784 _aBioavailability |
|
| 650 | 7 |
_2AGROVOC _91731 _aBiofortification |
|
| 650 | 7 |
_2AGROVOC _91138 _aGrain |
|
| 650 | 7 |
_aPlant breeding _gAGROVOC _2 _91203 |
|
| 650 | 7 |
_2AGROVOC _916987 _aRats |
|
| 650 | 7 |
_2AGROVOC _920030 _aPhytates |
|
| 650 | 7 |
_2AGROVOC _95624 _aTrace elements |
|
| 650 | 7 |
_2AGROVOC _96463 _aMalnutrition |
|
| 700 | 1 |
_aHouse, W.A. _922880 |
|
| 700 | 1 |
_aOrtiz-Monasterio, I. _gFormerly Sustainable Intensification Program _gFormerly Integrated Development Program _gFormerly Sustainable Agrifood Systems _8INT1421 _9827 |
|
| 700 | 1 |
_922881 _aCheng, Z. |
|
| 773 | 0 |
_tJournal of Agricultural and Food Chemistry _n633854 _gv. 53, no. 6, p. 2176-2180 _dWashington, DC (USA) : American Chemical Society, 2005. _wG444388 _x0021-8561 |
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| 856 | 4 |
_yAccess only for CIMMYT Staff _uhttps://hdl.handle.net/20.500.12665/1695 |
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| 942 |
_cJA _2ddc _n0 |
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| 999 |
_c26116 _d26116 |
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