000			03766nab a22006017a 4500
999			_c60851 _d60843
001			60851
003			MX-TxCIM
005			20211006075332.0
008			190823s2019 gw |||p|op||| 00| 0 eng d
022			_a0040-5752
022			_a1432-2242 (Online)
024	8		_ahttps://doi.org/10.1007/s00122-019-03354-9
040			_aMX-TxCIM
041	0		_aeng
100	0		_910284 _aMing Hao
245	1	2	_aA breeding strategy targeting the secondary gene pool of bread wheat : _bintrogression from a synthetic hexaploid wheat
260			_aBerlin (Germany) : _bSpringer, _c2019.
500			_aPeer review
520			_aKey message: Introgressing one-eighth of synthetic hexaploid wheat genome through a double top-cross plus a two-phase selection is an effective strategy to develop high-yielding wheat varieties. Abstract: The continued expansion of the world population and the likely onset of climate change combine to form a major crop breeding challenge. Genetic advances in most crop species to date have largely relied on recombination and reassortment within a relatively narrow gene pool. Here, we demonstrate an efficient wheat breeding strategy for improving yield potentials by introgression of multiple genomic regions of de novo synthesized wheat. The method relies on an initial double top-cross (DTC), in which one parent is synthetic hexaploid wheat (SHW), followed by a two-phase selection procedure. A genotypic analysis of three varieties (Shumai 580, Shumai 969 and Shumai 830) released from this program showed that each harbors a unique set of genomic regions inherited from the SHW parent. The first two varieties were generated from very small populations, whereas the third used a more conventional scale of selection since one of bread wheat parents was a pre-breeding material. The three varieties had remarkably enhanced yield potential compared to those developed by conventional breeding. A widely accepted consensus among crop breeders holds that introducing unadapted germplasm, such as landraces, as parents into a breeding program is a risky proposition, since the size of the breeding population required to overcome linkage drag becomes too daunting. However, the success of the proposed DTC strategy has demonstrated that novel variation harbored by SHWs can be accessed in a straightforward, effective manner. The strategy is in principle generalizable to any allopolyploid crop species where the identity of the progenitor species is known.
546			_aText in English
650		7	_2AGROVOC _91265 _aSoft wheat
650		7	_aBreeding methods _gAGROVOC _2 _91030
650		7	_2AGROVOC _98730 _aIntrogression
650		7	_2AGROVOC _92020 _aHexaploidy
700	0		_910285 _aLianquan Zhang
700	0		_910286 _aLaibin Zhao
700	0		_910287 _aShoufen Dai
700	0		_98613 _aAili Li
700	0		_98615 _aWuyun Yang
700	0		_910288 _aDie Xie
700	0		_910289 _aQingcheng Li
700	0		_910290 _aShunzong Ning
700	0		_910291 _aZehong Yan
700	0		_95399 _aBihua Wu
700	0		_910292 _aXiujin Lan
700	0		_910293 _aZhongwei Yuan
700	0		_910294 _aLin Huang
700	0		_910295 _aJirui Wang
700	0		_910296 _aKe Zheng
700	0		_910297 _aWenshuai Chen
700	0		_910298 _aMa Yu
700	0		_910299 _aXuejiao Chen
700	0		_910300 _aMengping Chen
700	0		_92265 _aYuming Wei
700	0		_910301 _aHuaigang Zhang
700	1		_8INT2678 _9849 _aKishii, M. _gGlobal Wheat Program
700	1		_910302 _aHawkesford, M.J.
700	0		_94205 _aLong Mao
700	0		_92266 _aYouliang Zheng
700	0		_98614 _aDengcai Liu
773	0		_dBerlin (Germany) : Springer, 2019. _gv. 132, no. 8, p. 2285–2294 _tTheoretical and Applied Genetics _wu444762 _x0040-5752
942			_2ddc _cJA _n0