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001			67472
003			MX-TxCIM
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022			_a2045-2322 (Online)
024	8		_ahttps://doi.org/10.1038/s41598-024-58816-y
040			_aMX-TxCIM
041			_aeng
100	1		_aMebratu, A. _99687
245	1	0	_aTestcross performance and combining ability of early-medium maturing quality protein maize inbred lines in Eastern and Southern Africa
260			_bNature Publishing Group, _c2024. _aLondon (United Kingdom) :
500			_aPeer review
500			_aOpen Access
520			_aLimited commercial quality protein maize (QPM) varieties with low grain yield potential are currently grown in Eastern and Southern Africa (ESA). This study was conducted to (i) assess the performance of single-cross QPM hybrids that were developed from elite inbred lines using line-by-tester mating design and (ii) estimate the general (GCA) and specific (SCA) combining ability of the QPM inbred lines for grain yield, agronomic and protein quality traits. One hundred and six testcrosses and four checks were evaluated across six environments in ESA during 2015 and 2016. Significant variations (P ≤ 0.01) were observed among environments, genotypes and genotype by environment interaction (GEI) for most traits evaluated. Hybrids H80 and H104 were the highest-yielding, most desirable, and stable QPM hybrids. Combining ability analysis showed both additive and non-additive gene effects to be important in the inheritance of grain yield. Additive effects were more important for agronomic and protein quality traits. Inbred lines L19 and L20 depicted desirable GCA effects for grain yield. Various other inbred lines with favorable GCA effects for agronomic traits, endosperm modification, and protein quality traits were identified. These inbred lines could be utilized for breeding desirable QPM cultivars. The QPM hybrids identified in this study could be commercialized after on-farm verification to replace the low-yielding QPM hybrids grown in ESA.
546			_aText in English
597			_bAccelerated Breeding _uhttps://hdl.handle.net/10568/162528 _dGlobal Affairs Canada
650		7	_aGenes _2AGROVOC _93563
650		7	_aGenotype environment interaction _2AGROVOC _91133
650		7	_aMaize _2AGROVOC _91173
650		7	_aProtein quality _2AGROVOC _91223
651		7	_2AGROVOC _94387 _aEast Africa
651		7	_2AGROVOC _91954 _aSouthern Africa
700	1		_aDagne Wegary Gissa _8INT3401 _9952 _gGlobal Maize Program
700	1		_aChere, A.T. _8I1705938 _9791 _gGlobal Maize Program
700	1		_aAmsal Tesfaye Tarekegne _8INT2937 _9876 _gGlobal Maize Program
773	0		_tScientific Reports _gv. 14, no. 1, art. 9151 _dLondon (United Kingdom) : Nature Publishing Group, 2024 _wa58025 _x2045-2322
856	4		_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/23160
942			_cJA _n0 _2ddc
999			_c67472 _d67464