000 02463nam a22003737a 4500
001 G64909
003 MX-TxCIM
005 20240919021049.0
008 121211s ||||f| 0 p|p||0|| |
020 _a968-6923-79-9
040 _aMX-TxCIM
072 0 _aF30
082 0 4 _a633.153
_bMIH
100 1 _aBergvinson, D.J.
_uInsect Resistant Maize: Recent Advances and Utilization. Proceedings of an International Symposium; Mexico, DF (Mexico); 27 Nov - 3 Dec 1994
110 2 _aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
245 0 0 _aWindows of maize resistance
260 _aMexico, DF (Mexico)
_bCIMMYT :
_c1997
340 _aPrinted
520 _aBreeding for maize resistance to insects and disease has been made possible by the broad genetic range in host plant resistance (HPR). However, within a given genotype, resistance can vary considerably over the course of plant development as well as between the different plant tissues for a given stage in development. These temporal and spatial changes in HPR are also reflected in the phytochemical composition of the plant. Using leaf bioassays, the feeding preferences of European corn borer larvae for certain portions of the leaf and stages of maturity were identified. These preferences were then related to photochemical composition which included nitrogen, fiber, phenolic acid, and DIMBOA content as well as leaf toughness and epidermal cell wall absorption of ultraviolet light. Disease pests of maize are also influenced by changes in host plant chemistry, in particular the silk and kernel chemistry as it relates to Fusarium sp. Inferences on HPR strategies can be made from these types of studies which in turn can further our understanding of heritable resistance and how to screen germplasm in an efficient manner. This paper also serves to show the importance of sample position and timing when studying phytochemical mechanisms of HPR to insects and disease.
546 _aEnglish
591 _a9711|AGRIS 9702|anterior|R97-98PROCE|FINAL9798
593 _aJose Juan Caballero
595 _aCPC
650 1 0 _aGenetic inheritance
650 1 0 _aPest insects
650 1 7 _aPest resistance
_gAGROVOC
_2
_91199
650 1 7 _aPlant diseases
_gAGROVOC
_2
_91206
653 0 _aCIMMYT
650 1 0 _91314
_aZea mays
_gAGROVOC
650 1 0 _91134
_aGenotypes
_gAGROVOC
650 1 7 _aPlant breeding
_gAGROVOC
_2
_91203
700 1 _aMihm, J.A.
_eed.
942 _cPRO
999 _c3588
_d3588