000			02935nab|a22003137a|4500
999			_c61795 _d61787
001			61795
003			MX-TxCIM
005			20250619170158.0
008			200503s2012||||xxk|||p|op||||00||0|eng|d
022			_a1439-0434 (Online)
024	8		_ahttps://doi.org/10.1111/j.1439-0434.2012.01957.x
040			_aMX-TxCIM
041			_aeng
100	1		_aQamar, M. _93290
245	1	0	_aDetermination of rust resistance gene complex Lr34/Yr18 in spring wheat and its effect on components of partial resistance
260			_aUnited Kingdom : _bWiley, _c2012.
500			_aPeer review
520			_aThe non‐durable nature of hypersensitive (race‐specific) resistance has stimulated scientists to search for other options such as race‐non‐specific resistance to provide long‐lasting protection against plant diseases. Adult plant resistance gene complex Lr34/Yr18 confers a dual race‐non‐specific type of resistance to wheat against stripe rust (Puccinia striiformis f. sp. tritici) and leaf rust (P. triticina Eriks). This study was conducted to evaluate 59 spring bread wheat (Triticum aestivum L.) genotypes for the presence of the Lr34/Yr18‐linked csLV34 allele using STS marker csLV34 and to determine the effect of this gene complex on the components of partial resistance in wheat to leaf/stripe rust. Lr34/Yr18‐linked csLV34 allele was detected only in 12 genotypes, namely Iqbal 2000, NR‐281, NR 354, NR 363, NR 364, NR 366, NR 367, NR 370, NR 376, 4thEBWYT 509, 4thEBWYT 510 and 4thEBWYT 518. Eleven genotypes showing the amplified Lr34/Yr18‐linked allele were further studied for the assessment of the effect of Lr34/Yr18 on components of partial resistance along with nine genotypes lacking this gene complex. Both stripe and leaf rusts were studied separately. The components of partial resistance including latency period (LP) and infection frequency (IF) were studied on primary leaf (seedling stage), fourth leaf and fully expanded young flag leaf (adult plant stage). Both the stripe and leaf rust fungi showed a prolonged LP and reduced IF on genotypes carrying Lr34/Yr18 gene complex. Generally, a longer LP was associated with a reduced IF at all growth stages. Although significant effect of Lr34/Yr18 gene complex on LP and IF was observed almost at all three growth stages, the effect was more pronounced at flag leaf. This suggested that Lr34/Yr18 gene complex is more effective at later stages of plant growth.
546			_aText in English
650		7	_2AGROVOC _91842 _aPuccinia striiformis
650		7	_2AGROVOC _93980 _aPuccinia recondita
650		0	_aInfection _gAGROVOC _911032
650		7	_aDisease resistance _gAGROVOC _2 _91077
650		7	_2AGROVOC _91806 _aSpring wheat
700	1		_912787 _aGardezi, D.A.
700	1		_911300 _aIqbal, M.
773	0		_tJournal of Phytopathology _gv. 160, no. 11-12, p. 628-636 _dUnited Kingdom : Wiley, 2012. _x1439-0434 _wu444566
942			_cJA _n0 _2ddc