| 000 | 03405nab a22003977a 4500 | ||
|---|---|---|---|
| 999 |
_c58908 _d58900 |
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| 001 | 58908 | ||
| 003 | MX-TxCIM | ||
| 005 | 20211006082127.0 | ||
| 008 | 151020s2017 sz |||p|op||| 00| 0 eng d | ||
| 024 | 8 | _ahttps://doi.org/10.3389/fpls.2017.01800 | |
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 100 | 1 |
_92608 _aCrespo-Herrera, L.A. _gGlobal Wheat Program _8I1706538 |
|
| 245 | 1 | 0 |
_aQTL mapping of grain Zn and Fe concentrations in two hexaploid wheat RIL populations with ample transgressive segregation _h[Electronic Resource] |
| 260 |
_aSwitzerland : _bFrontiers, _c2017. |
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| 500 | _aPeer review | ||
| 500 | _aOpen Access | ||
| 520 | _aMore than 50% of undernourished children live in Asia and more than 25% live in Africa. Coupled with an inadequate food supply, mineral deficiencies are widespread in these populations; particularly zinc (Zn) and iron (Fe) deficiencies that lead to retarded growth, adverse effects on both the immune system and an individual's cognitive abilities. Biofortification is one solution aimed at reducing the incidence of these deficiencies. To efficiently breed a biofortified wheat variety, it is important to generate knowledge of the genomic regions associated with grain Zn (GZn) and Fe (GFe) concentration. This allows for the introgression of favorable alleles into elite germplasm. In this study we evaluated two bi-parental populations of 188 recombinant inbred lines (RILs) displaying a significant range of transgressive segregation for GZn and GFe during three crop cycles in CIMMYT, Mexico. Parents of the RILs were derived from Triticum spelta L. and synthetic hexaploid wheat crosses. QTL analysis identified a number of significant QTL with a region denominated as QGZn.cimmyt-7B_1P2 on chromosome 7B explaining the largest (32.7%) proportion of phenotypic variance (PVE) for GZn and leading to an average additive effect of −1.3. The QTL with the largest average additive effect for GFe (−0.161) was found on chromosome 4A (QGFe.cimmyt-4A_P2), with 21.14% of the PVE. The region QGZn.cimmyt-7B_1P2 co-localized closest to the region QGZn.cimmyt-7B_1P1 in a consensus map built from the linkage maps of both populations. Pleiotropic or tightly linked QTL were also found on chromosome 3B, however of minor effects and PVE between 4.3 and 10.9%. Further efforts are required to utilize the QTL information in marker assisted backcrossing schemes for wheat biofortification. A strategy to follow is to intercross the transgressive individuals from both populations and then utilize them as sources in biofortification breeding pipelines. | ||
| 526 | _aWC | ||
| 526 | _aA4N8H | ||
| 546 | _aText in English | ||
| 591 | _aYuanfeng Hao : No CIMMYT Affiliation | ||
| 650 | 7 |
_91853 _aQuantitative Trait Loci _2AGROVOC |
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| 650 | 7 |
_aWheat _gAGROVOC _2 _91310 |
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| 650 | 7 |
_91315 _aZinc _2AGROVOC |
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| 650 | 7 |
_93544 _aIron _2AGROVOC |
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| 650 | 7 |
_92020 _aHexaploidy _2AGROVOC |
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| 650 | 7 |
_98866 _aSegregation _2AGROVOC |
|
| 700 | 1 |
_9880 _aVelu, G. _8INT2983 _gGlobal Wheat Program |
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| 700 | 1 |
_92027 _aStangoulis, J. |
|
| 700 | 1 |
_9919 _aYuanfeng Hao _8INT3329 _gGlobal Wheat Program |
|
| 700 | 1 |
_aSingh, R.P. _gGlobal Wheat Program _8INT0610 _9825 |
|
| 773 | 0 |
_wu56875 _x1664-462X _dSwitzerland : Frontiers _tFrontiers in Plant Science _gv. 8, art. 1800 |
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| 856 | 4 |
_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/19103 |
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| 942 |
_2ddc _cJA _n0 |
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