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Barley Yellow Dwarf Virus Resistance in Triticum aestivum × Leymus angustus Hybrids
Author(s) -
Plourde Ariane,
Comeau A.,
StPierrf C. A.
Publication year - 1992
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1992.tb00107.x
Subject(s) - biology , barley yellow dwarf , luteovirus , hybrid , inoculation , leymus , plant disease resistance , virus , rhopalosiphum padi , poaceae , plant virus , botany , agronomy , horticulture , gene , virology , genetics , pest analysis , homoptera , aphididae , grassland
The enzyme‐linked immunosorbent assay (ELISA) was used to determine the concentration of barley yellow dwarf virus (BYDV) in leaves of spring wheat Triticum aestivum L. cv. ‘Fukuhokomugi’, Leymus angustus (Trin.) Pilger (Altai wild rye) and their F 1 hybrids inoculated at the 2‐ to 3‐leaf stage. The BYDV isolate “Cloutier” (serotype PAV) was used. The results showed that L. angustus confers immunity or strong resistance to the virus. Significant multiplication of the virus occurred in ‘Fukuhokomugi’ which expressed an intermediate level of tolerance to the disease under field conditions. The F 1 haploid hybrids of ‘Fukuhokomugi’× L. angustus expressed a level of resistance almost equal to that of their wild parent, with a low concentration of virus appearing 16 days after inoculation and no more afterwards. The discovery of BYDV resistance in L. angustus and the expression of this character in the F 1 hybrids provide new opportunities for the enlargement of the gene pool for BYDV resistance in wheat.