000 03640nam a22004697a 4500
001 G78594
003 MX-TxCIM
005 20231114204209.0
008 121211s ||||f| 0 p|p||0|| |
020 _a970-648-106-0
040 _aMX-TxCIM
072 0 _aF01
072 0 _aH10
090 _aCIS-3839
100 1 _aMutinda, C.J.M.
_uBook of abstracts: Arnel R. Hallauer international symposium on plant breeding; Arnel R. Hallauer International Symposium on Plant Breeding; Mexico, DF (Mexico); 17-22 Aug 2003
110 0 _aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
245 0 0 _aMeeting the challenges in the development and deployment of insect resistance maize using novel technologies:
_b The IRMA project approach
260 _aMexico, DF (Mexico)
_bCIMMYT :
_c2003
300 _ap. 94-95
340 _aPrinted
520 _aInsect pests, of which stem borers are the most widely distributed, affect a significant portion of the 96 million hectares of maize grown in developing countries (Pingali 2001). In Kenya, stem borers cause about 15% maize grain yield loss annually (De Groote et al. 2001). The major species in Kenya are Chilo partellus (Swinehoe), Busseola fusca (Fuller), Sessamia Calamistis (Hampson), and Eldana saccharina (Walker). The controls used to manage stem borer damage mainly consist of chemical, biological, cultural, and host plant resistance. Chemical control methods are the most effective, but they are also the most expensive for small-holder farmers. Pesticides also posses threats to humans, livestock, and the environment. Farmers can easily adapt host plant resistance as it is encapsulated in the seed. However, developing insect resistant maize using conventional means has been elusive due to limited genetic variation, difficulty in maintaining the quantitatively controlled traits, and the fact that the procedure deals with two organisms: pests and hosts. Using genetic engineering tools, modified novel genes from the soil dwelling bacterium Bacillus thuringiensis (Bt) have been introduced into crops, and hold great promise in controlling lepidopteran stem borers (National Academy of Science 2000). The genes encode delta-endotoxin proteins. On ingestion by the susceptible stem borer, these proteins are activated by the conducive environment in insect guts and the effects of their release result in larval mortality (Gill et al. 1992). The Bt toxins are active against lepidopteran pests but non-toxic to humans and livestock. The Insect Resistant Maize for Africa (IRMA) project was developed by three core partners, KARI, CIMMYT, and the Syngenta Foundation for Sustainable Agriculture, to meet the challenges in developing and deploying elite and adapted insect resistant maize germplasm, including Bt maize.
536 _aGlobal Maize Program|Socioeconomics Program
546 _aEnglish
591 _a0311|AGRIS 0301|AL-Maize Program
593 _aJuan Carlos Mendieta
594 _aINT2512|INT2460
595 _aCSC
650 1 0 _aBiological control
650 1 0 _aChemicals
650 1 0 _aEnvironmental control
650 1 7 _aGermplasm
_gAGROVOC
_2
_91136
650 1 0 _ainsect resistance
650 1 0 _ainsect resistance
650 1 7 _aMaize
_gAGROVOC
_2
_91173
650 1 7 _aPlant diseases
_gAGROVOC
_2
_91206
700 1 _aGethi, M.,
_ecoaut.
700 1 _aHoisington, D.A.,
_ecoaut.
700 1 _aOdhiambo, B.,
_ecoaut.
700 1 _aMugo, S.N.
_gFormerly Global Maize Program
_8INT2460
_9840
700 1 _aDe Groote, H.
_gFormerly Socioeconomics Program
_gFormerly Sustainable Agrifood Systems
_8INT2512
_9841
942 _cPRO
999 _c6910
_d6910