Show simple item record

Expression of Thinopyrum intermedium-derived Barley yellow dwarf virus resistance in elite bread wheat backgrounds

Creator: Ayala, L.
Creator: Ginkel, M. Van.
Creator: Khairallah, M.M.
Creator: Keller, B.
Creator: Henry, M.
Year: 2001
URI: https://hdl.handle.net/10883/21364
Language: English
Publisher: American Phytopathological Society (APS)
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Country focus: Mexico
Place of Publication: St. Paul, MN (USA)
Pages: 55-62
Issue: 1
Volume: 91
DOI: 10.1094/PHYTO.2001.91.1.55
Keywords: Luteovirus
Keywords: Simple Sequence Repeat Marker
Description: Resistance to Barley yellow dwarf virus (BYDV) is not found in wheat but is available in a Thinopyrum intermedium translocation (Ti) carried on chromosome 7DL of bread wheat recombinant lines. We used one of those lines (TC14/2*Spear) to introgress the Ti into bread wheat cultivars and to determine the influence of wheat backgrounds, with and without known tolerance to BYDV, on the expression of resistance. Two single and three backcross populations, segregating for the presence of the alien fragment, were tested under field conditions and artificial inoculation with BYDV isolates MAV-Mex and PAV-Mex. Lines containing the fragment were identified using the microsatellite marker gwm37. Tillering, biomass, grain yield, thousand-kernel weight, and seed quality were evaluated in inoculated and noninoculated plots. Resistance was assessed by enzyme-linked immunosorbent assay. In early generations, the alien fragment followed expected Mendelian segregation, whereas in the advanced ones a slight bias against its transmission was observed. No positive nor negative effects of Ti on agronomic performance and quality were found. A significant optical density reduction in individuals carrying the fragment was observed after PAV infection in crosses with lines Anza and Baviacora but not with Milan. In addition, the fragment was associated with a lower frequency of infected plants for both PAV and MAV isolates. The reduced yield loss associated with the presence of the translocation was due largely to the lower infection rate.
Agrovoc: BARLEY YELLOW DWARF LUTEOVIRUS
Agrovoc: WHEAT
Agrovoc: CHROMOSOME TRANSLOCATION
Agrovoc: INBRED LINES
Agrovoc: MICROSATELLITES
Agrovoc: PLANT BREEDING
ISSN: 1943-7684
Journal: Phytopathology


Files in this item

Thumbnail

This item appears in the following Collection(s)

  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

Show simple item record