000			03158nab a22004457a 4500
001			G97390
003			MX-TxCIM
005			20220420223220.0
008			220420s2012 xxc||||| |||| 00| 0 eng d
022			_a1916-9760 (Online)
022			_a1916-9752
024	8		_ahttps://doi.org/10.5539/jas.v4n11p206
040			_aMX-TxCIM
041			_aeng
090			_aCIS-6884
100	1		_aMwololo, J.K. _910466
245	1	0	_aSources of resistance to the maize weevil Sitophilus Zeamais in tropical maize
260			_aCanada : _bCanadian Center of Science and Education, _c2012.
500			_aPeer review
500			_aOpen Access
520			_aThe maize weevil, Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae), is among the major storage pests that enhance food insecurity among maize farmers. New sources of resistance to the maize weevil are critical in a successful breeding program to address grain damage by postharvest pests. The objective of the study was to evaluate resistance in maize genotypes to the maize weevil, and consequently their value for use in breeding programs. A total of 175 genotypes, including hybrids, landraces, open-pollinated varieties and checks, were tested for resistance to the maize weevil. The percentage grain damage, weight loss, flour weight and weight of damaged and undamaged grains were measured. Significant differences (P <0.001) were observed among the genotypes for all the traits evaluated. The distribution of the genotypes among the different categories of resistance was an indication of the existence of genetic variation. The most resistant genotypes were CKPH08003 and BRAZ 2451 while the most susceptible were PH 3254 and BRAZ 4, among the hybrids and landraces respectively. Genotypes that were superior to the resistant checks were identified. The percentage weight loss and flour weight were identified as the most important insect-resistance traits for discriminating genotypes as evident from the canonical discriminant analysis. Correlation coefficients among the traits evaluated were highly significant. The resistant hybrids identified can be recommended for release and adoption by farmers, whereas the resistant landraces can act as sources of resistance for use in breeding programs.
536			_aGlobal Maize Program
546			_aText in English
591			_aCIMMYT Informa No. 1819
594			_aINT2460|INT2940
595			_aCSC
650		7	_2AGROVOC _92535 _aCurculionidae
650		7	_2AGROVOC _92534 _aSitophilus zeamais
650		7	_2AGROVOC _96646 _aStored products pests
650		7	_2AGROVOC _91199 _aPest resistance
650		7	_2AGROVOC _94259 _aTropical zones
700	1		_aMugo, S.N. _gFormerly Global Maize Program _8INT2460 _9840
700	1		_aOkori, P. _94444
700	1		_9878 _aTadele Tefera _gGlobal Maize Program _8INT2940
700	1		_aOtim, M. _91928
700	1		_aMunyiri, S.W.,
773	0		_tJournal of Agricultural Science, Canada _gv. 4, no. 11, p. 206-215 _dCanada : Canadian Center of Science and Education, 2012. _w56848 _x1916-9752
856	4		_uhttp://hdl.handle.net/10883/3177 _yOpen Access through DSpace
942			_cJA _2ddc _n0
999			_c29661 _d29661