000			02191nam a22003377a 4500
001			G98706
003			MX-TxCIM
005			20240919020959.0
008			121211s ||||f| 0 p|p||0|| |
040			_aMX-TxCIM
090			_aCIS-7469
100	1		_aBasnet, B.R. _gForlmerly Global Wheat Program _gExcellence in Breeding _8INT3524 _9967
245	0	0	_aMolecular mapping of a new wheat gene effective against race UG99 of the stem rust pathogen
260			_c2014
300			_a1 page
500			_aAbstract only
520			_aAdvanced wheat breeding line ND643/2*Weebil1 carries stem rust resistance gene, temporarily designated as SrND643, effective against Ug99 group of Puccinia graminis f. sp. tritici (Pgt) races at both seedling and adult growth stages. To map this gene, one hundred and forty eight recombinant inbred lines (RILs), developed by crossing ND643/2*Weebil1 with susceptible line Cacuke, were evaluated for stem rust response in field nurseries at Njoro, Kenya, during two growing seasons in 2010, and were genotyped with DArT, SSR and SNP markers. Linkage mapping tagged SrND643 at the distal end of chromosome 4AL showing close association with SSR markers Xgwm350 (0.5 cM), Xwmc219 (4.1 cM) and Xwmc776 (2.9 cM). The race specificity of SrND643 is different from those of Sr7a and Sr7b, indicating that the resistance is conferred by a gene at a new locus or an allele of Sr7. As the flanking markers Xgwm350 and wmc219 were predictive of the presence of SrND643 in advanced germplasm, marker-assisted selection can be effectively carried out to develop Ug99 resistance wheat cultivars in the future.
536			_aGlobal Wheat Program
546			_aEnglish
593			_aLucia Segura
594			_aINT3524|INT3098|INT0610|INT2843
595			_aCSC
700	1		_aLopez-Vera, E.E., _ecoaut. _92100
700	1		_aRouse, M.R., _ecoaut.
700	1		_aYue Jin, _ecoaut. _91696
700	1		_aHuerta-Espino, J. _gGlobal Wheat Program _8CHUE01 _9397
700	1		_9892 _aSukhwinder-Singh _gGenetic Resources Program _8INT3098 _ecoaut.
700	1		_aSingh, R.P. _gGlobal Wheat Program _8INT0610 _9825
700	1		_9867 _aBhavani, S. _gGlobal Wheat Program _8INT2843
942			_cPRO
999			_c8757 _d8757