Journal Article Ppublish
PubMed: 39555005 DOI: 10.1270/jsbbs.23079
Identification of a major QTL conferring resistance to derived from the winter wheat 'Hokkai 240' on chromosome 2AS.
Breed Sci 74(3):232-239
Authors: Kenji Kawaguchi, Takehiro Ohki, Goro Ishikawa, Mitsuru Sayama, Yohei Terasawa, Shunsuke Oda, Masaya Fujita, Miwako Ito, Koichi Hatta
Affiliations
- NARO Hokkaido Agricultural Research Center, Shinsei, Memuro, Hokkaido 082-0081, Japan.
- Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan.
- NARO Hokkaido Agricultural Research Center, Hitsujigaoka, Toyohira, Sapporo, Hokkaido 062-8555, Japan.
- NARO Institute of Crop Science, Tsukuba, Ibaraki 305-8518, Japan.
- NARO Kyushu Okinawa Agricultural Research Center, 496 Izumi, Chikugo, Fukuoka 833-0041, Japan.
Abstract
Wheat yellow mosaic disease is a soilborne disease caused by (WYMV). Symptoms include yellow mosaic coloring of leaves, stunting, and growth inhibition. Here we conducted a detailed analysis of resistance to this virus in winter wheat 'Hokkai 240' by carrying out inoculation tests of WYMV and conducting field tests. The resistance level observed in 'Hokkai 240' was compared with those in varieties harboring known resistance genes. In the inoculation tests, 'Hokkai 240' showed resistance to WYMV Pathotypes I and II and partial resistance to Pathotype III. This result was contrary to the sensitive responses to the three pathotypes exhibited by the variety harboring resistance gene on chromosome 2DL. In fields infected with WYMV Pathotypes II and III, 'Hokkai 240' plants exhibited few disease symptoms and little proliferation of the virus. By analyzing the quantitative trait loci (QTLs) in recombinant inbred lines from a cross between 'Hokkai 240' and 'Nanbukomugi', a single major QTL, , from 'Hokkai 240', which had significant effects on Pathotypes II and III of the virus, was detected in the proximity of and mapped on chromosome 2AS. These results indicate that may be useful for developing broad resistance to WYMV in wheat breeding programs.
MeSH
Genes, Disease Resistance, Viruses, Chromosomes