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020 _a970-648-106-0
040 _aMX-TxCIM
041 _aeng
072 0 _aF01
072 0 _aH10
090 _aCIS-3873
100 1 _aBergvinson, D.J.
_96743
111 2 _9990
_aArnel R. Hallauer International Symposium on Plant Breeding
_cMexico, DF (Mexico)
_d17-22 Aug 2003
245 1 0 _aAdvances in tropical maize resistance to storage pests
260 _aMexico, DF (Mexico) :
_bCIMMYT,
_c2003.
300 _a2 pages
340 _aPrinted
520 _aMaize, Zea mays L., is a staple food crop and used as feed in most of the developing world. Subsistence farmers who store maize often encounter losses in excess of 20% due to storage pests. Most of these farmers cannot afford hermetic storage structures nor chemical control measures, which also present a health risk due to improper handling. Host plant resistance is an effective and environmentally safe means of reducing storage losses and has been under utilized in maize. A source population with multiple storage pest resistance has been developed at CIMMYT by recombining Caribbean accessions with moderate levels of resistance to Prostephanus truncatus (larger grain borer, LGB) and Sitophilus zeamais (maize weevil, MW). Resistance to storage pests is polygenically controlled and has a strong maternal effect (Serratos et al. 1997). The mechanism of resistance is thought to involve phenolic compounds located within the aleurone layer or pericarp of the kernel (Sen et al.1994; Serratos et al. 1997). Using 503 recurrent selection under artificial infestation, broad-based sources of resistance have been developed and the biochemical basis for this resistance identified -it not only includes phenolics, but also extensin linkages within the pericarp cell wall.
546 _aText in English
591 _a0309|AGRIS 0301|AL-Maize Program
595 _aCSC
650 1 7 _aChemical control
_91039
_2AGROVOC
650 1 7 _aDeveloping countries
_2AGROVOC
_93229
650 1 7 _aFood crops
_91994
_2AGROVOC
650 1 7 _aMaize
_2AGROVOC
_91173
650 1 7 _aPest control
_2AGROVOC
_94736
650 1 7 _aProstephanus truncatus
_2AGROVOC
_93136
650 1 7 _aSitophilus zeamais
_92534
_2AGROVOC
650 1 7 _aStorage
_2AGROVOC
_96638
650 1 7 _aPlant breeding
_gAGROVOC
_2
_91203
700 1 _aGarcĂ­a-Lara, S.
_97068
_gGlobal Maize Program
773 _dMexico, DF (Mexico) : CIMMYT, 2003.
_gp. 4-5
_tBook of abstracts : Arnel R. Hallauer international symposium on plant breeding
_wG76572
_z 970-648-106-0
942 _cSUM
_2ddc
999 _c7026
_d7026