000			02803nab|a22003737a|4500
001			65901
003			MX-TxCIM
005			20230630194507.0
008			200520s2022||||xxk|||p|op||||00||0|eng|d
022			_a1992-0407
024	8		_ahttps://doi.org/10.4314/eajsci.v3i1.42791
040			_aMX-TxCIM
041			_aeng
100			_aMosisa Worku, S. _97093
245	1	0	_aPerformance of variety cross hybrids of maize (Zea Mays L.) in the mid-altitude and highland transition areas of Ethiopia
260			_aEthiopia : _bHaramaya University, _c2009.
500			_aOpen Access
520			_aImproved open-pollinated varieties (OPVs) have been developed and released for commercial production in maize growing areas of Ethiopia. However, the dissemination of these improved varieties is limited because of a low level of interest of seed producers in the production and marketing of OPV seed. The dissemination of broad based improved varieties could be increased by the development and release of adapted commercial high yielding variety cross hybrids. This study was conducted in 2002 at seven locations in the midaltitude (1000 – 1800 meter above sea level, masl) and highland transition areas (1800 – 2000 masl) of Ethiopia to evaluate the performance of variety cross hybrids. Twenty-nine variety cross hybrids and nine parental OPVs/populations along two checks were tested in randomized complete block design with three replications at each location. Analysis of variance revealed significant difference (P<0.01) among the entries. The mean grain yield ranged from 3.9 to 8.3 t ha-1. Some variety cross hybrids gave a better performance than the improved OPVs. Kuleni (Pool-9A) x Abo-Bako outyielded the high parent (Kuleni) by 29.7% and Gibe-1 x Kuleni outyielded the best OPV and high parent (Gibe-1) by 14.7%. Gibe-1 x Kuleni also had a more stable performance across the testing locations than the parental OPVs. This implied that moving from OPVs to variety cross hybrids, particularly under small scale farmers’ conditions, could increase the productivity of maize.
546			_aText in English
591			_aTadesse, B. : No CIMMYT Affiliation
591			_aDagne Wegary Gissa : No CIMMYT Affiliation
650		7	_2AGROVOC _91138 _aGrain
650		7	_2AGROVOC _91313 _aYields
650		7	_2AGROVOC _96574 _aOpen pollination
650		7	_2AGROVOC _91173 _aMaize
651		7	_2AGROVOC _92025 _aEthiopia
700	1		_aAbera, W. _92253
700	1		_aTadesse, B. _8001712791 _gGlobal Maize Program _91821
700	1		_aWolde, L. _97603
700	1		_aDagne Wegary Gissa _9952 _8INT3401 _gGlobal Maize Program
700	1		_aAzmach, G. _95612
773	0		_tEast African Journal of Sciences _gv. 3 no. 1, p. 80-86 _dEthiopia : Haramaya University, 2009. _x1992-0407
942			_cJA _n0 _2ddc
999			_c65901 _d65893