| 000 | 02721naa a22003017a 4500 | ||
|---|---|---|---|
| 001 | 58316 | ||
| 003 | MX-TxCIM | ||
| 005 | 20211006082039.0 | ||
| 008 | 170208s2016 mx ||||| |||| 00| 0 eng d | ||
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 100 | 1 |
_91903 _aRivera Amado, A.C. _8N1313814 _gGlobal Wheat Program |
|
| 245 | 1 | 0 | _aAchieving increases in spike growth, fruiting efficiency, and harvest index in high biomass wheat cultivars |
| 260 |
_aMexico : _bCIMMYT, _c2016. |
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| 500 | _aOpen resorce | ||
| 520 | _aWhile allocation of carbon to the developing wheat spike determines grain sink strength, concurrent growth of other plant organs (structural and non-structural dry matter; DM) competes for carbon. This study observed genetic variation in structural and non-structural DM partitioning to the true stem, leaf sheath and spike, and associations with spike growth, harvest index (HI), and grain yield in 26 CIMMYT cultivars and advanced lines under high radiation, irrigated conditions in northwestern Mexico during 2011-12 and 2012-13. Structural DM partitioning was assessed in the true-stem internodes and amongst the spike morphological components (rachis, glume, palea, lemma, awn) at harvest. Results showed a positive association between spike partitioning index (spike DM/above ground DM at anthesis + 7 days; SPI) and HI (R2 = 0.16, P< 0.05). Lower true-stem structural DM partitioning was associated with higher SPI and spike DM growth per unit area at anthesis + 7 days. There were negative associations between SPI and spike DM per unit area and true-stem internode 2 and 3 DM partitioning (P< 0.05), but no associations with other internodes. A positive linear association was determined between each of rachis specific weight (rachis DM per unit length) and DM partitioning to the palea and the fruiting efficiency (grains per unit spike DM at anthesis + 7 days). A Genome Wide Association Study (GWAS) is ongoing to identify genetic markers for these key target traits to enhance HI in the High Biomass Association panel at the field site in northwestern Mexico during 2015-16, as part of the PhD of Aleyda Sierra Gonzalez. | ||
| 526 |
_aWC _cFP3 |
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| 546 | _aText in English | ||
| 650 | 7 |
_aWheat _gAGROVOC _2 _91310 |
|
| 700 | 1 |
_91899 _aTrujillo, E. |
|
| 700 | 1 |
_91900 _aSylvester Bradley, R. |
|
| 700 | 1 |
_9899 _aMolero, G. _gFormerly Global Wheat Program _8INT3193 |
|
| 700 | 1 |
_94288 _aSierra-Gonzalez, A. |
|
| 700 | 1 |
_aReynolds, M.P. _gGlobal Wheat Program _8INT1511 _9831 |
|
| 700 | 1 |
_91823 _aFoulkes, M.J. |
|
| 773 | 0 |
_wu58303 _dMexico : CIMMYT : USAID : MASAGRO : SAGARPA : CONACYT, 2016. _tProceedings of the 2nd International TRIGO (Wheat) Yield Potential : _gp. 70-76 |
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| 942 |
_2ddc _cPRO |
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| 999 |
_c58316 _d58308 |
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