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003			MX-TxCIM
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008			202212s2022||||mx |||p|op||||00||0|eng|d
022			_a2320-7035
024			_ahttps://doi.org/10.9734/ijpss/2022/v34i2231412
040			_aMX-TxCIM
041			_aeng
100	0		_aGoshime Muluneh Mekasha _932876
245	1	0	_aStandard heterosis estimation for quality protein maize hybrids over best released and commercialized hybrids
260			_bSCIENCEDOMAIN international, _c2022. _aUnited States of America :
500			_aPeer review
500			_aOpen Access
520			_aMaize plays an indispensable role in meeting high food demand. It is globally one of the most widely adopted and cultivated crops. Hybrid development from fixed inbred lines is one of the tactics to boost maize production. The national average maize yield in Ethiopia is low and thus, selection of promising germplasm, knowledge of combining ability, and heterotic grouping are prerequisites to develop high-yielding maize varieties. Forty-two Quality Protein Maize (QPM) single crosses (21 inbred lines each crossed with two testers) along with three popular standard hybrid checks were evaluated in two replications using alpha lattice design during the 2017 cropping season at Ambo, Arsi-Negele, and Kulumsa. The objective of this study was to estimate standard heterosis for grain yield (GY), and other agronomic and morphological characters. Significant difference among crosses was observed for 19 traits at Ambo, 14 traits at Arsi-Negele, and 19 traits at Kulumsa in the hybrid trial. For GY, at Ambo, almost all crosses showed negative heterosis against the best check (AMH853). At Arsi-Negele 14 crosses had positive standard heterosis, from these only three crosses: L8xT1 (50.8%), L8xT2 (46.6%), and L7xT1 (33.9%) showed significant difference against Jibat but at Kulumsa, the difference for standard heterosis was positive but non-significant only by two crosses: (L7xT1 (6.6%) and L19xT1 (4.7%). Based on mean grain yield and standard heterosis, L8xT2, L7xT1, L8xT1, L19xT1, L6xT2, and L18xT1 are promising. The study of the results highlighted that the breeding program was successful in generating superior QPM hybrids. Based on the finding we suggest that it is better to use the parents of theses hybrids as potential source materials in the breeding program through to form different crosses formation.
546			_aText in English
650		7	_2AGROVOC _926603 _aCross-breeding
650		7	_2AGROVOC _91155 _aInbred lines
650		7	_2AGROVOC _91145 _aHeterosis
650		7	_2AGROVOC _91223 _aProtein quality
650		7	_2AGROVOC _91151 _aHybrids
700	1		_aChere, A.T. _9791 _8I1705938 _gGlobal Maize Program
700	0		_aYednekachew Merid Seyoum _932878
773			_tInternational Journal of Plant & Soil Science _gv. 34, no. 22, p. 581-596 _dUnited States of America : SCIENCEDOMAIN international, 2022. _x2320-7035 _wu57479
856			_yOpen Access through DSpace _uhttps://hdl.handle.net/10883/22929
942			_cJA _n0 _2ddc
999			_c67098 _d67090