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A single wheatgrass chromosome reduces the concentration of barley yellow dwarf virus in wheat
Author(s) -
BRETTELL R. I. S.,
BANKS P. M.,
CAUDERON Y.,
CHEN X.,
CHENG Z. M.,
LARKIN P. J.,
WATERHOUSE P. M.
Publication year - 1988
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1988.tb03337.x
Subject(s) - barley yellow dwarf , biology , luteovirus , chromosome , inoculation , virus , serotype , virology , genetics , botany , plant virus , horticulture , gene
SUMMARY Seedlings of a series of addition or substitution lines of wheat containing different Thinopyrum intermedium chromosomes were inoculated with the PAV and RPV serotypes of barley yellow dwarf virus (BYDV). Reduced virus titres in infected plants were ascribed to a single pair of homoeologous group 7 chromosomes from Th. intermedium in the disomic addition lines L1 and TAF 2. The group 7 chromosome is associated with red pigmentation of coleoptiles, which was also observed in two lines ditelosomic for the α arm of the chromosome. However, when infected with the PAV serotype of BYDV, the ditelosomic lines had normal virus titres and it is concluded that potential determinants of BYDV resistance are located on the β arm of the Group 7 chromosome.