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GrainGenes Reference Report: PBR-120-125

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Reference	PBR-120-125
Title	The Aegilops ventricosa segment on chromosome 2AS of the wheat cultivar 'VPM1' carries the cereal cyst nematode resistance gene Cre5
Journal	Plant Breeding
Year	2001
Volume	120
Pages	125-128
Author	Jahier J [ Show all 7 ]
Abstract	Summary: Previous studies showed that the intermediate level of resistance in bread wheat line 'VPM1' to pathotype Ha12 of the cereal cyst nematode could be conferred by an Aegilops ventricosa-derived gene, CreX, in chromosome arm 2AS, which also carries the rust resistance genes Yr17, Lr37 and Sr38. Near isogenic lines (NILs) differing for the presence and absence of the Ae. ventricosa-derived linked genes Yr17/Lr37/Sr38 were tested with cereal cyst nematode. Lines carrying Yr17 produced significantly fewer nematode cysts than the controls. An infested soil experiment produced better differentiation among resistant and susceptible genotypes. Susceptibility of 'Trident' indicated that linkage between CreX and Yr17 is incomplete. Microsatellite markers did not differentiate between 'Trident' and CreX-carrying genotypes. However, Xgwm636 (104) was associated with the presence of Yr17 in all six genetic backgrounds. Since none of the reported cereal cyst nematode resistance genes is located in chromosome 2AS, CreX was designated as Cre5
Gene	Sr38 (Triticum)
Keyword	[ Hide all but 1 of 42 ] aegilops aegilops ventricosa bread bread wheat cereal cereal cyst nematode chromosome cultivar differentiation gene genetic genetic background genotype heteroclera avenae heterodera avenae intermediate isogenic lines line linkage marker microsatellite microsatellite marker near isogenic line near isogenic lines nematode nematode resistance nematode resistance gene pathotype puccinia spp. resistance resistance gene resistant rust rust resistance rust resistance gene rust resistance genes segment soil susceptibility triticum aestivum vpm1 wheat cultivar

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