000			03457nam a22005297a 4500
001			G78712
003			MX-TxCIM
005			20211006084746.0
008			121211s ||||f| 0 p|p||0|| |
040			_aMX-TxCIM
072		0	_aF03
072		0	_aQ04
082	0	4	_a631.53 _bBOO
100	1		_aEspinosa Calderón, A. _uBook of abstracts: Arnel R. Hallauer international symposium on plant breeding
110	0		_aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
111	2		_aArnel R. Hallauer International Symposium on Plant Breeding _cMexico, D.F. (Mexico) _d17-22 Aug 2003
245	0	0	_aSeed production and andro-sterility in normal and quality protein maize
260			_aMexico, DF (Mexico) _bCIMMYT : _c2003
300			_ap. 238-239
340			_aPrinted
520			_aMexico has the potential to produce some 270,000 hectares of quality protein maize (Espinosa et al. 2003). Since 1998, a significant number of researchers from the National Research Institute of Forestry, Agricu1ture, and Livestock (INIF AP) have been working with CIMMYT researchers to obtain some quality protein maize (QPM) varieties and hybrids. As a resu1t of this effort, some high-yielding materials with good agronomic characteristics have been developed. However, it has proven difficult to convince farmers to use the new materia1s. In 1999, INIFAP released 26 hybrids and varieties, but only a few of these are used. One significant problem is that the national seed producing company, PRONASE, is bankrupt (Espinosa el al. 2002). One means to increase the seed adoption rate of QPM hybrids is to use andro-sterility. INIF AP researchers have been working for many years with the progenitors of the hybrids of normal quality. Three new hybrids with the andro-sterile scheme have been released recently (Tadeo et al.1999; Tadeo et al. 2001) and mixed (H-48, H-50, H-153). It is necessary to have a complete andro-sterile scheme (Partas 1997) and work is currently under way to achieve this, as well as to identify and develop inbred lines that have ferti1ity-restoring capadty (Espinosa et al. 2003). In the case of QPM hybrids, work began in 1999 through the introduction of andro-sterility to the basic lines, and by trying to identify restoring lines. Progress has been achieved and now the program has second and third inbreds towards developing quality protein in elite lines. Restoring lines have also been identified and these are used as restoring donors to the QPM lines.
546			_aEnglish
591			_a0309|AGRIS 0301|AL-Maize Program
593			_aJuan Carlos Mendieta
595			_aCPC
650	1	0	_aFood composition
650	1	0	_aGrain yield _91339
650	1	7	_aInbred lines _gAGROVOC _2 _91155
650	1	7	_aMaize _gAGROVOC _2 _91173
650	1	0	_aMexico
650	1	0	_aProtein content _91222
650	1	7	_aQuality _gAGROVOC _2 _91231
650	1	0	_aSeed production _91253
650	1	0	_91151 _aHybrids _gAGROVOC
650	1	7	_aAgricultural research _gAGROVOC _2 _91006
700	1		_aBetanzos Mendoza, E., _ecoaut.
700	1		_aCaballero Hernández, F., _ecoaut.
700	1		_aCano, O., _ecoaut.
700	1		_aCoutiño Estrada, B., _ecoaut.
700	1		_aGomez M.N., _ecoaut.
700	1		_aPalafox Caballero, A., _ecoaut.
700	1		_aReyes M., C., _ecoaut.
700	1		_aRodríguez M., F., _ecoaut.
700	1		_aSierra Macias, M., _ecoaut.
700	1		_aTadeo Robledo, M., _ecoaut.
942			_cPRO
999			_c7012 _d7012