000			02069nab a22003257a 4500
999			_c63340 _d63332
001			63340
003			MX-TxCIM
005			20211006085222.0
008			200211s2011 sz |||p|op||| 00| 0 eng d
022			_a2071-1050
024	8		_ahttps://doi.org/10.3390/su3091531
040			_aMX-TxCIM
041			_aeng
100	1		_918495 _aKutka, F.
245	1	0	_aOpen-pollinated vs. hybrid maize cultivars
260			_aBasel (Switzerland) : _bMDPI, _c2011.
500			_aPeer review
500			_aOpen Access
520			_aThe history of maize breeding methods in the USA is reviewed to examine the question of types of maize cultivars in sustainable agriculture. The yield potential of OP cultivars was much higher than national average yields prior to 1930, but hybrid cultivars today often out-yield OP cultivars by 50–100% or more. However, rates of gain for yield using recurrent selection on populations appear equal to that recorded for commercial hybrid breeding. The inbred-hybrid method, while successful, was not “the only sound basis” for maize improvement, as evidenced by later experiences in the United States and worldwide. It appears that maize breeders have practiced objective science and achieved concrete goals, although personal interests and goals clearly direct the work at times. As society looks for tools for sustainability based on achieving multiple goals, a special dedication to scientific validation and broad objectivity may be required. The potential for OP cultivars today is evaluated and research questions are identified.
546			_aText in English
650		7	_aBreeding _gAGROVOC _2 _91029
650		7	_2AGROVOC _96429 _aPolyculture (aquaculture)
650		7	_2AGROVOC _91151 _aHybrids
650		7	_aInbred lines _gAGROVOC _2 _91155
650		7	_aMaize _gAGROVOC _2 _91173
650		7	_2AGROVOC _96574 _aOpen pollination
773	0		_dBasel (Switzerland) : MDPI, 2011. _gv. 3, no. 9, p. 1531-1554 _tSustainability _x2071-1050
856	4		_yClick here to access online _uhttps://doi.org/10.3390/su3091531
942			_2ddc _cJA _n0