000			02788nab a22004457a 4500
999			_c30396 _d30396
001			G98514
003			MX-TxCIM
005			20220104230318.0
008			121211b |||p||p||||||| |z||| |
022	0		_a1684-5315
024	8		_ahttps://doi.org/10.5897/AJB12.1802
040			_aMX-TxCIM
090			_aCIS-7442
100	1		_aMunyiri, S.W.
245	0	0	_aResponses of tropical maize landraces to damage by Chilo partellus stem borer
260			_c2013
500			_aPeer-review: No - Open Access: Yes|http://www.ajol.info/index.php/ajb
500			_aPeer review
500			_aOpen Access
520			_aThe potential to manage insect pests using host-plant resistance exists, but has not been exploited adequately. The objective of this study was to determine the resistance of 75 tropical maize landraces through artificial infestation with Chilo partellusSwinhoe. The trial was laid in alpha-lattice design and each seedling was infested with five neonates three weeks after planting, over two seasons in 2009 and 2010. The number of exit holes, tunnel length, ear diameter, ear length, plant height, stem diameter, stem lodging and grain yield were measured and a selection index computed. GUAT 1050 was the most resistant with an index of 0.56, while BRAZ 2179 was the most susceptible with an index of 1.66. Ear characteristics were negatively correlated with damage parameters. The principal component biplot suggested that exit holes, cumulative tunnel length, leaf damage, cob diameter, stem lodging, selection index, ear and plant height contributed 71.2% of the variation in resistance. The mean number of exit holes and tunnel length for resistant landraces and resistant hybrid checks were similar; at 5.5 and 2.48 cm, respectively. The identified resistant landraces (GUAT 1050, GUAT 280, GUAT 1093, GUAT 1082, GUAT 1014, CHIS 114, and GUAN 34) could be used to develop C. partellus stem borer-resistant maize genotypes.
536			_aGlobal Maize Program
546			_aEnglish
591			_aNo CIMMYT affiliation (Beyene, J.)|Academic Journals|CIMMYT Informa No. 1873
594			_aINT2460
595			_aCSC
650	1	0	_aChilo partellus
650	1	0	_aear length
650	1	0	_aexit holes
650	1	0	_astem borer resistance
650	1	0	_atunnel length
700	1		_aMwololo, J.K., _ecoaut.
700	1		_aOkori, P., _ecoaut.
700	1		_aOtim, M., _ecoaut. _91928
700	1		_aMugo, S.N. _gFormerly Global Maize Program _8INT2460 _9840
700	1		_9870 _aBeyene, Y. _gGlobal Maize Program _8INT2891
700	1		_9878 _aTadele Tefera _gGlobal Maize Program _8INT2940 _ecoaut.
773	0		_tAfrican Journal of Biotechnology _gv. 12, no. 11, p. 1229-1235
856	4		_uhttp://hdl.handle.net/10883/3415 _yOpen Access through DSpace
942			_cJA _2ddc _n0