000			03120nab a22004337a 4500
001			G90158
003			MX-TxCIM
005			20230711184626.0
008			211105s2007 xxk|||p|op||| 00| 0 eng d
022			_a1573-5036 (Online)
022			_a0257-1862
024	8		_ahttps://doi.org/10.1080/02571862.2007.10634796
040			_aMX-TxCIM
041			_aeng
090			_aCIS-5117
100	1		_9473 _aDerera, J.
245	1	0	_aGene action determining Phaeosphaeria leaf spot disease resistance in experimental maize hybrids
260			_aUnited Kingdom : _bTaylor and Francis, _c2007.
340			_aComputer File|Printed
500			_aPeer review
500			_aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0257-1862
520			_aPhaeosphaeria leaf spot (Phaeosphaeria maydis Henn.) has the potential to cause substantial yield losses in maize. Maize is grown by small-scale farmers without fungicides; hence there is need to breed for resistance in regionally adapted germplasm. Little information about the gene action determining Phaeosphaeria leaf spot disease (PLS) resistance in African maize germplasm is currently available. This study was therefore conducted to determine the gene action controlling resistance to PLS in African maize germplasm. Seventy-two experimental hybrids were generated in eight sets according to a North Carolina Design II mating scheme. Experimental and check hybrids were evaluated in an 8 x 8 simple lattice design during the 2003/4 season, and in an 8 x 10 á-lattice design, with two replications, during the 2004/5 seasons at the Cedara and Rattray Arnold Research Stations, in South Africa and Zimbabwe, respectively. There was significant variation among hybrids for resistance. General combining ability (GCA) due to both male and female inbred parents were highly significant (P<0.01), whereas specific combining ability effects were not significant for PLS scores, indicating that mainly additive gene action conditioned PLS resistance in experimental hybrids. Significant differences between male and female GCA variances, suggested the importance of cytoplasmic inheritance for PLS resistance. Resistance was highly heritable indicating that selection could be used to improve the resistance in this germplasm.
536			_aGlobal Maize Program
546			_aText in English
592			_aZA-UKZN 2005 DERERA D r
594			_aINT2396
650		7	_aGenetic inheritance _2AGROVOC _96628
650		7	_aMaize _91173 _2AGROVOC
650		7	_aDisease resistance _2AGROVOC _91077
700	1		_aTongoona, P.B. _8001713456 _gFormerly Excellence in Breeding _9340
700	1		_9837 _aVivek, B. _gGlobal Maize Program _8INT2396
700	1		_avan Rij, N. _924772
700	1		_aLaing, M.D. _9170
740			_a89435
740			_a90158
773	0		_tSouth African Journal of Plant and Soil _n634931 _gv. 24, no. 3, p. 138-144 _wG444752 _x0257-1862 _dUnited Kingdom : Taylor and Francis, 2007.
856	4		_yAccess only for CIMMYT Staff _uhttps://hdl.handle.net/20.500.12665/972
942			_cJA _2ddc _n0
999			_c26878 _d26878