000			02953nab a22003737a 4500
001			G97748
003			MX-TxCIM
005			20220602153357.0
008			220602s2010 et |||p|op||| 00| 0 eng d
022			_a0257-2605
022			_a2415-2382 (Online)
040			_aMX-TxCIM
041			_aeng
090			_aCIS-7056
100	1		_9952 _aDagne Wegary Gissa _gGlobal Maize Program _8INT3401
245	1	0	_aCombining ability and heterotic relationships between CIMMYT and Ethiopian maize inbred lines
260			_aEthiopia : _bEthiopian Institute of Agricultural Research, _c2010.
500			_aPeer-review: No - Open Access: No
500			_aPeer review
500			_aOpen Access
520			_aKnowledge of combining ability and heterotic relation of exotic inbred lines with the locally available ones would be helpful for efficient breeding program. The objectives of the current study were to estimate: (i) combining ability effects between Ethiopian and CIMMYT (International Centre for Maize and Wheat Improvement) maize inbred lines and (ii) possible heterotic relationships between the two sources of inbred lines. Forty-two crosses were produced using North Carolina Design II mating scheme by crossing six Ethiopian with seven CIMMYT inbred lines. Combined analyses over three locations showed significant differences among the hybrids for all the studied traits. Both general (GCA) and specific (SCA) effects were significant for most traits, indicating the importance of both additive and non-additive effects for these traits. Female parents E2 and E4 showed significant and positive GCA effects for grain yield. Other female lines that showed desirable GCA effects were E1 for ear height, E2 for days to anthesis, ear and plant heights and E5 for days to anthesis and silkng. Among male parents, C1 was the best general combiner for all agronomic traits, but not for grain yield. Inbred lines C2 and C6 were good general combiners for plant height and days to silking, respectively. Hybrids E4 x C2 and E5 x C3 showed superior SCA effects for grain yield while few other combinations showed desirable SCA effects for days to anthesis, ear and plant heights. The results of this study indicated potential heterotic relationships between CIMMYT and Ethiopian inbred lines for use in hybrid and synthetic development and introgression of germplasm.
546			_aText in English
595			_aCSC
650		7	_2AGROVOC _92367 _aCombining ability
650		7	_2AGROVOC _91155 _aInbred lines
650		7	_2AGROVOC _91173 _aMaize
700	1		_9837 _aVivek, B. _gGlobal Maize Program _8INT2396
700			_aTadesse, B. _96750
700	1		_aAbdissa, K. _927674
700	1		_aRegasa, M.W. _8INT3344 _9928 _gFormerly Global Maize Program
700	1		_aWolde, L. _97603
773	0		_tEthiopian Journal of Agricultural Science _gv. 20, p. 82-93 _dEthiopia : Ethiopian Institute of Agricultural Research, 2010. _x0257-2605
942			_cJA _2ddc _n0
999			_c29907 _d29907