000			03424nam a22003737a 4500
001			G95887
003			MX-TxCIM
005			20240919020958.0
008			121211s ||||f| 0 p|p||0|| |
020			_a978-970-648-180-1
040			_aMX-TxCIM
090			_aCIS-6545
100	1		_aPawan Kumar Singh _gGlobal Wheat Program _8INT2868 _9868
245	0	0	_aCharacterization of CIMMYT germplasm for resistance to Septoria diseases of wheat
260			_aMexico, DF (Mexico) _bCIMMYT : _c2011
300			_ap. 55
500			_aAbstract only
520			_aThe leaf spotting disease complex is a major biotic constrain in enhancing grain production in the major wheat growing regions. This complex of diseases include two major Septoria diseases: Septoria tritici blotch incited by the fungus Mycosphaerella graminicola (anamorph: Septoria tritici Rob. ex Desm.) and Stagonospora nodorum blotch caused by Phaeosphaeria nodorum (anamorph: Stagonospora nodorum (Berk.) Castellani & Germano). Both diseases cause serious losses in quality and quantity of grain produced mainly in the high-rainfall areas of wheat production. Epidemics of Septoria tritici blotch and Septoria nodorum blotch of wheat are associated with favorable weather conditions like frequent rains and moderate temperatures, conservation agriculture practices, and wheat monoculture involving cultivation of susceptible cultivars. International Maize and Wheat Improvement Center (CIMMYT), Mexico initiated major efforts to mitigate the threat of Septoria tritici blotch in early 1970s and semi-dwarf wheat germplasm with adequate resistance were developed and distributed globally. Current efforts include screening of wheat germplasm, identification and characterization of new sources of resistance, mapping genes conferring resistance and incorporation of resistance into new, high-yielding backgrounds. Screening trials of elite CIMMYT germplasm from Irrigated, Rainfed and Wide-Crosses Breeding programs reveal high level of resistance to both the Septoria diseases. These germplasm have diverse genetic make-up and the resistance is likely broad based. Genetic and molecular analysis of elite breeding materials is in progress to identify novel resistance genes. Additional efforts are in place to develop superior wheat cultivars with durable Septoria resistance. The International Septoria Nursery (ISEPTON) has been re-established and advanced breeding lines with diverse genetic make-up showing promising agronomic, quality and Septoria resistance are distributed worldwide to be utilized by wheat breeding programs in development of superior wheat cultivars.
536			_aGenetic Resources Program|Research and Partnership Program|Global Wheat Program
546			_aEnglish
593			_aLucia Segura
594			_aINT2902|INT2868|INT2833|INT1237|INT2692|INT0610|INT3098
595			_aCSC
700	1		_aDuveiller, E.|Singh, P.K. _eeds.
700	1		_aHerrera-Foessel, S.A., _ecoaut.
700	1		_aManes, Y., _ecoaut.
700	1		_aHuerta-Espino, J. _gGlobal Wheat Program _8CHUE01 _9397
700	1		_9826 _aDuveiller, E. _gDG's Office _8INT1237
700	1		_9892 _aSukhwinder-Singh _gGenetic Resources Program _8INT3098 _ecoaut.
700	1		_aSingh, R.P. _gGlobal Wheat Program _8INT0610 _9825
700	1		_9851 _aDreisigacker, S. _gGlobal Wheat Program _8INT2692
700	1		_9871 _aBonnett, D.G. _gGlobal Wheat Program _8INT2902 _ecoaut.
942			_cPRO
999			_c8272 _d8272