Phenotypic and Marker Assisted Evaluation of Korean Wheat Cultivars
2011
Jung, Y.J., National Agrobiodiversity Center, RDA, Suwon, Republic of Korea | Park, C.S., Chonbuk National University, Jeonju, Republic of Korea | Jeung, J.U., National Institute of Crop Science, RDA, Suwon, Republic of Korea | Kang, C.S., National Institute of Crop Science, RDA, Iksan, Republic of Korea | Lee, G.A., National Agrobiodiversity Center, RDA, Suwon, Republic of Korea | Choi, Y.M., National Agrobiodiversity Center, RDA, Suwon, Republic of Korea | Lee, J.R., National Agrobiodiversity Center, RDA, Suwon, Republic of Korea | Lee, M.C., National Agrobiodiversity Center, RDA, Suwon, Republic of Korea | Kim, C.K., National Agrobiodiversity Center, RDA, Suwon, Republic of Korea | Seo, Y.W., Korea University, Seoul, Republic of Korea
Fusarium head blight (FHB), also known as scab, caused mainly by Fusarium graminearum is a devastating disease of wheat in regions that are warm and humid during flowering. In addition to significant yield and quality losses, the mycotoxin deoxynivalenol produced by the pathogen in infected wheat kernels is a serious problem for food and feed safety. Twenty- three Korean cultivars and "Sumai 3", which is a FHB-resistant Chinese cultivar were tested for Type Ⅰ, Type Ⅱ resistances of FHB. Three cultivars were identified as resistant in Type Ⅰ assessment, and two cultivars were resistant in Type Ⅱ assessment. Genetic variation and relationship among the cultivars were evaluated on the basis of 11 Simple Sequence Repeat (SSR) and 29 Sequence Tagged Site (STS) markers that were linked to FHB resistance Quantitative Trait Loci (QTL) on chromosome 3BS. One SSR and 7 STS markers detected polymorphisms. Especially, using a STS marker (XSTS3B-57), 32.4% of the variation for Type Ⅱ FHB resistance could be explained. Genetic relationship among Korean wheat cultivars was generally consistent with their released year. These markers on chromosome 3BS have the potential for accelerating the development of Korean wheat cultivars with improved Fusarium head blight resistance through the use of marker-assisted selection.
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