Euphytica (2001) 120, 373-378

G. Fedak, Q. Chen, R.L. Conner, A. Laroche, A. Comeau and C.A. St.-Pierre (2001)
Characterization of wheat-Thinopyrum partial amphiploids for resistance to Barley yellow dwarf virus
Euphytica 120 (3), 373-378
Abstract: Resistance to viruses such as wheat streak mosaic virus (WSMV) and barley yellow dwarf virus (BYDV) is lacking in the primary gene pool of wheat, and therefore resistance is being introgressed from wild relatives such as Thinopyrum species. Resistance to BYDV was found in partial amphiploids (2n = 8x = 56, consisting of 42 wheat and14 alien chromosomes) obtained in hybrids between wheat and both Th. intermedium and Th.ponticum. GISH analysis revealed that the alien genomes of all but one resistant partial amphiploid were heterogeneous consisting of different ratios of St, J^s and J genome chromosomes obtained from theThinopyrum parent. Translocated chromosomes consisting of Robertsonian, interstitial and terminal translocations between the different genomes were also detected. The tissue blot immunoassay showed that partial amphiploids having resistance could be inoculated with the virus but both virus multiplication and spread were completely blocked.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Robert L. Conner

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Barley yellow dwarf viruses	Wheat (Triticum)