000			02612nab a22003977a 4500
999			_c59376 _d59368
001			59376
003			MX-TxCIM
005			20211006085145.0
008			180404s2017 wiu|||p| p||| 00| 0 eng d
024	8		_ahttps://doi.org/10.2134/agronj2016.10.0566
040			_aMX-TxCIM
041			_aeng
100	1		_9422 _aBadu-Apraku, B.
245	1		_aYield gains in extra-early maize cultivars of three breeding eras under multiple environments
260			_aMadison, WI : _bCrop Science Society of America, _c2017.
500			_aPeer review
500			_aOpen Access
500			_aSome authors of this article are affiliated to IITA.
520			_aAvailability of extra-early maize cultivars has facilitated the expansion of maize production into savannas of West and Central Africa (WCA). Fifty-six extra-early maize cultivars of three breeding eras;1995 to 2000, 2001 to 2006, and 2007 to 2012 were evaluated for 2 yr under 24 multiple-stress and 28 non-stress environments in WCA. Objectives of the study were to determine genetic improvement in grain yield of cultivars developed during the breeding eras, and identify high-yielding and s multiple-stress and non-stress environments. Yield gains from era 1 to era 3 under multiple stresses was associated with increased days to anthesis, reduced stalk lodging, and improved husk cover. Cultivars 2004 TZEE-Y Pop STR C4, TZEE-W Pop STR QPM C0, and TZEE-W Pop STR BC2 C0 of era 2; and TZEE-W STR 107 BC1, TZEE-W Pop STR C5, and 2012 TZEE-Y DT STR C5 of era 3 were high-yielding and stable across multiple-stress environments while 98 Syn EE-W from era 1, FERKE TZEE-W STR, TZEE-W Pop STR C3, and TZEE-Y Pop STR QPM C0 from era 2, and TZEE-W Pop STR C5, 2009 TZEE-OR2 STR QPM, 2009 TZEE-W STR, TZEE-Y STR 106, and TZEE-W DT C0 STR C5 from era 3 were outstanding across non-stress environments and should be tested extensively and commercialized. Considerable improvement has been made in breeding for multiple-stress tolerant extra-early maize cultivars.
526			_aMCRP
546			_aText in English
650		7	_aMaize _gAGROVOC _2 _91173
650		7	_aCrop yield _gAGROVOC _2 _91066
650		0	_94709 _aYield increases
700	1		_96811 _aYallou, C. G.
700	1		_92289 _aObeng-Antwi, K.
700	1		_94012 _aAlidu, H.
700	1		_96810 _aTalabi, O.
700	1		_96789 _aAnnor, B.
700	1		_9634 _aOyekunle, M.
700	1		_96785 _aAkaogu, I. C.
700	1		_96812 _aAderounmu, M.
773	0		_gv. 109, no. 2, p. 418-431 _tAgronomy Journal _w444482 _x0002-1962
856	4		_uhttps://doi.org/10.2134/agronj2016.10.0566
942			_2ddc _cJA