000			03196nab a22004097a 4500
001			G98174
003			MX-TxCIM
005			20220426223257.0
008			220426s2013 ke |||p|op||| 00| 0 eng d
022			_a1684-5315
024	8		_ahttps://doi.org/10.5897/AJB12.2979 _qDOI is wrong in original article
040			_aMX-TxCIM
041			_aeng
090			_aCIS-7354
100	1		_aNzuve, F.M. _927223
245	1	0	_aStudies of the genetics of inheritance of stem rust resistance in bread wheat
260			_aNairobi (Kenya) : _bAcademic Journals, _c2013.
500			_aPeer-review: No - Open Access: Yes|http://www.ajol.info/index.php/ajb
500			_aPeer review
500			_aOpen Access
520			_aPgt race TTKSK (Ug99) has a wide virulence range with respect to currently grown wheat cultivars worldwide. Aspects of migration, mutation, recombination and selection in the pathogen have led to previously deployed stem rust resistance genes being ineffective. Race TTKSK has further evolved to acquire virulence for resistance genes such as Sr24 (race Ug99 + Sr24) and Sr36 (Ug99 + Sr36). Five resistant wheat lines (KSL-2, KSL-3, KSL-5, KSL-12 and KSL-19) which were resistant in tests during 2008, 2009 and 2010 were used as parents in crosses with stem rust susceptible line CACUKE to develop genetic populations for determining the inheritance of resistance to stem rust. F3 populations were evaluated at KARI Njoro in the 2012 off season and 2012 to 2013 main season. The adult plant stem rust responses were scored using the modified Cobb?s scale. The F2:3 lines of population(s) exhibiting qualitative variation were grouped as homozygous resistant (HR), segregating (Seg) and homozygous susceptible (HS). Heavy disease pressure was present during the cropping seasons with the check CACUKE displaying 90% susceptibility. Chi square analysis revealed that the segregation data in the parent KSL-2 did not deviate significantly from the single gene model (1:2:1) suggesting that the resistance to stem rust is conditioned by a single dominant gene. The Chi square test also revealed that the stem rust resistance in the parents KSL-3, KSL-5, KSL-12 and KSL-19 was conditioned by two genes. The families from the KSL-2 and KSL-3 crosses also segregated for the presence of the pseudo black chaff implying that theSr2 gene could be present in the background of these wheat parents. The superior transgressive segregants identified in these crosses will be used in breeding.
536			_aGlobal Wheat Program
546			_aText in English
591			_aCIMMYT Informa No. 1866| Academic Journals
594			_aINT2843
595			_aCSC
650		7	_aGenetics _2AGROVOC _91130
650		7	_aWheat _2AGROVOC _91310
650		7	_aGenetic resistance _2AGROVOC _92277
700	1		_aTusiime, G. _927224
700	1		_9867 _aBhavani, S. _gGlobal Wheat Program _8INT2843
700	1		_aNjau, P.N. _92089
700	1		_92088 _aWanyera, R.
773	0		_tAfrican Journal of Biotechnology _gv. 12, no. 21, p. 3153-3159 _dNairobi (Kenya) : Academic Journals, 2013. _wG76647 _x1684-5315
856	4		_uhttp://hdl.handle.net/10883/3363 _yOpen Access through DSpace
942			_cJA _2ddc _n0
999			_c30143 _d30143