000			02895nab a22003977a 4500
001			G98453
003			MX-TxCIM
005			20220104230318.0
008			211124s2013 bg |||p|op||| 00| 0 eng d
022			_a2227-670X
040			_aMX-TxCIM
041			_aeng
090			_aCIS-7426
100	1		_aMwololo, J.K. _910466
245	1	0	_aEvaluation of traits of resistance to postharvest insect pests in tropical maize
260			_aBangladesh : _bIJACS Journal, _c2013.
500			_aPeer review
500			_aPeer-review: No - Open Access: Yes|http://ijagcs.com/general-information/
520			_aThe maize weevil Sitophilus zeamais (Motschulsky) is among the most grain damaging insect in sub-saharan Africa. The objective of the study was to determine differences in traits associated with resistance to the maize weevil in the field and in storage. Two hundred and ninenty five (295) maize genotypes comprising of 120 inbred lines, 100 hybrids and open pollinated varieties (OPVs), and 75 landraces including resistant and susceptible checks were used in the study. The test materials were planted in two rows of 5 m replicated three times in alpha lattice designs. Husk tip length (cm) was measured in 10 plants of each row. Grain texture was rated visually and mechanical hardness of grain samples determined using a force displacement meter. Grain samples of 100 grams were taken from each plot of the three replications of each of the experiments and tested in the screening laboratory for resistance to maize weevil. Analysis of variance for the individual traits, correlation analysis and weight loss (%) was performed. High phenotypic variation in traits associated with postharvest resistance was evident. Grain hardness was high in the resistant compared to the susceptible genotypes. Genotypes with flint grain texture had longer tip length. The resistant hybrids and inbred lines were flinty in texture whereas the susceptible were dent. There was a positive relationship (r = 0.77) between grain texture and husk cover. The study showed that mechanisms of resistance vary among genotypes hence resistance should not be based on a single trait.
536			_aGlobal Maize Program
546			_aText in English
591			_aCIMMYT Informa No. 1873
594			_aINT2460|INT2940
595			_aCSC
650	1	0	_agrain losses
650	1	0	_ahusk cover
650	1	0	_aPostharvest Insect Pests
650	1	0	_aResistance
650	1	0	_aTexture
700	1		_aMugo, S.N. _gFormerly Global Maize Program _8INT2460 _9840
700	1		_9878 _aTadele Tefera _gGlobal Maize Program _8INT2940
700	1		_aMunyiri, S.W. _910467
773	0		_tInternational Journal of Agriculture and Crop Sciences _gv. 6, no. 13, p. 926-933 _dBangladesh : IJACS Journal, 2013. _x2227-670X
856	4		_uhttps://hdl.handle.net/20.500.12665/943 _yAccess only for CIMMYT Staff
942			_cJA _2ddc _n0
999			_c30349 _d30349