000 02538nam a22004337a 4500
001 G66258
003 MX-TxCIM
005 20240919021051.0
008 121211s ||||f| 0 p|p||0|| |
020 _a970-648-001-3
040 _aMX-TxCIM
072 0 _aF30
072 0 _aH20
082 0 4 _a633.1194
_bDUV
100 1 _aXiao Zhimin
_uHelminthosporium Blights of Wheat: Spot Blotch and Tan Spot. Proceedings of an International Workshop; El Batan, Texcoco (Mexico); 9 - 14 Feb 1997
110 2 _aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
245 0 0 _aBreeding for foliar blight resistance in Heilongjiang Province, China
260 _aMexico, DF (Mexico)
_bCIMMYT|UCL|BADC :
_c1998
340 _aPrinted
520 _aFoliar blight, black point, and root rot of wheat, caused by Bipolaris sorokiniana, B. triticicola, and Exserohilum monoceras, are the second most serious group of diseases in Heilongjiang province, China. Of the three pathogen strains, B. sorokiniana is the most important, accounting for more than 80% of fungal strains collected. Annual yield losses due to B. sorokiniana are estimated at 10-15%. Greatest damage occurs during the flowering to milk stages of the wheat plant. Disease severity is closely related to temperature and humidity, especially temperature several days before flowering. Breeding for resistance is the best means of reducing damage to wheat production in the province. Some germplasm and varieties with good B. sorokiniana resistance have been developed through cross breeding, resistance evaluation after artificial inoculation in the field and laboratory, and screening mutants by phytotoxin selection pressure and cell engineering. Since varieties with different maturation periods are exposed to different ecological conditions, they have different B. sorokiniana resistance levels, i.e., late varieties>middle varieties>early varieties.
546 _aEnglish
591 _a9806|AGRIS 9802
593 _aJose Juan Caballero
595 _aCPC
650 1 0 _aBipolaris
650 1 0 _aBlights
650 1 0 _aChina
_91042
650 1 7 _aDisease resistance
_gAGROVOC
_2
_91077
650 1 7 _aPlant diseases
_gAGROVOC
_2
_91206
650 1 0 _aSelection
650 1 0 _aYield factors
653 0 _aCIMMYT
650 1 7 _aTriticum
_gAGROVOC
_2
_91295
650 1 7 _aPlant breeding
_gAGROVOC
_2
_91203
700 1 _aDuveiller, E.|Dubin, H.J.|Reeves, J.|McNab, A.
_eeds.
700 1 _aSun Lianfa,
_ecoaut.
700 1 _aXin Wenli,
_ecoaut.
942 _cPRO
999 _c3812
_d3812