000			02436naa a22002777a 4500
001			58636
003			MX-TxCIM
005			20211006082041.0
008			170208s2017 mx ||||| |||| 00| 0 eng d
040			_aMX-TxCIM
041			_aeng
100	1		_94288 _aSierra-Gonzalez, A.
245	1	0	_aPhysiological traits to increase grain partitioning in high biomass cultivars in wheat
260			_aMexico : _bCIMMYT, _c2017.
500			_aOpen Access
520			_aTo meet global wheat demands, it is important to expand our current understanding of how physiological traits are associated with genetic gains and to identify phonemic and genomic approaches to improve yield potential. Yield is directly related to both biological yield (above-ground dry-matter per unit area; AGDM) and harvest index (grain yield/AGDM; HI), but in recent years the rate of genetic progress in HI has not increased; indeed, there is evidence for decreases in modern CIMMYT spring wheat cultivars as a result of a trade-off with increasing biomass. Therefore, it is important to identify new avenues for optimal dry matter (DM) partitioning of assimilates in order to improve grain sink strength - grain number - and HI in high biomass backgrounds as well as further identify genetic markers for these traits for application in marker-assisted selection. A summary of the main DM partitioning data collected during 2015-16 in the CIMMYT high biomass spring wheat panel HiBAP (High Biomass Association Panel, 150 genotypes) is presented and discussed. The general aim is to identify combinations of novel DM partitioning traits to increase HI. Results showed a strong association among genotypes between grain yield and AGDM (R2 =0.49, P< 0.001), a trade-off between AGDM and HI (R2 =0.23, P< 0.001) and an association between enhanced HI and reduced length of internode 3 (peduncle -2) (P< 0.05) at anthesis (GS65 +7d).
546			_aText in English
650		0	_91897 _aBiomass _gAGROVOC
650		7	_aWheat _gAGROVOC _2 _91310
700	1		_91903 _aRivera Amado, A.C. _8N1313814 _gGlobal Wheat Program
700	1		_9899 _aMolero, G. _gFormerly Global Wheat Program _8INT3193
700	1		_aReynolds, M.P. _gGlobal Wheat Program _8INT1511 _9831
700	1		_91823 _aFoulkes, M.J.
773	0		_wu58466 _dMexico : CIMMYT : USAID : MASAGRO : SAGARPA : CONACYT, 2017. _tProceedings of the 3rd International TRIGO (Wheat) Yield Potential : _gp. 79-84
942			_2ddc _cPRO
999			_c58636 _d58628