000			03229nam a22004697a 4500
001			G66392
003			MX-TxCIM
005			20240919021051.0
008			121211s ||||f| 0 p|p||0|| |
020			_a968-6923-94-2
040			_aMX-TxCIM
072		0	_aF30
072		0	_aH20
082	0	4	_a632.4 _bDUB
100	1		_aGilbert, J. _uFusarium Head Scab: Global Status and Future Prospects; Proceedings of a Workshop; El Batan, Mexico; 13-17 Oct 1996
110	2		_aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
245	0	0	_aStrategies for breeding for resistance to Fusarium head blight in Canadian spring wheat
260			_aMexico, DF (Mexico) _bCIMMYT : _c1997
340			_aPrinted
520			_aDoubled haploid (DH) populations were generated from crosses between fusarium head blight (FHB)-resistant Chinese hexaploid germplasm and susceptible adapted cultivars. Four families of second-round DH plants were produced from resistant 93FHB#37 (HY616 x NING8331) and susceptible RL4761. These families are being tested for their FHB reaction by spray and infection inoculation. It is hoped that a family will show a single gene segregation ratio and can then be used to establish genetic linkage to PCR-based markers. Using the University of British Colombia's simple sequence repeat (SSR) Primer Set #9, 75 PCR-based polymorphisms were found between the parents. The polymorphic primers will be screened for linkages to FHB genes when single gene families have been identified. Breeding programs have made extensive use of Brazilian cv. Frontana and Chinese cv. Sumai 3 and derived lines as FHB resistance sources. The search for useful genes in wild grass species continues, in an attempt to broaden the basis of resistance. Lines with resistance levels higher than those of the susceptible adapted parents have been identified in Brazilian rye landraces, and in wide crosses between common wheat and Hordeum, Triticum, Thinopyrum, and Dasypyrum species. No resistant tetraploid lines resulted from crosses between resistant Chinese hexaploid and susceptible durum cultivars. Tetraploid Triticum species were screened for reaction to FHB. Two T. dicoccoides lines were used in crosses with durum line DT484. In a preliminary test, 80 F3 lines from two crosses were screened in an irrigated nursery. There was a high percentage of resistant lines in one cross. Selections will be made for future screening and backcrossing.
546			_aEnglish
591			_a9806|AGRIS 9802
593			_aJose Juan Caballero
595			_aCPC
650	1	0	_aBlights
650	1	7	_aBreeding methods _gAGROVOC _2 _91030
650	1	7	_aDisease resistance _gAGROVOC _2 _91077
650	1	0	_aFusarium _92705
650	1	7	_aGermplasm _gAGROVOC _2 _91136
650	1	0	_91925 _aHaploidy _gAGROVOC
650	1	7	_aPlant diseases _gAGROVOC _2 _91206
650	1	0	_aSelection
653	0		_aCIMMYT
650	1	7	_aTriticum _gAGROVOC _2 _91295
650	1	7	_aPlant breeding _gAGROVOC _2 _91203
700	1		_aAung, T., _ecoaut.
700	1		_aDubin, H.J.|Gilchrist, L.|Reeves, J.|McNab, A. _eeds.
700	1		_aFedak, G., _ecoaut.
700	1		_aProcunier, J.D., _ecoaut.
700	1		_aTekauz, A., _ecoaut.
942			_cPRO
999			_c3875 _d3875