Abstract

annual plant of the family Asteraceae. Safflower has been widely cultivated in Korea, India, China, Egypt, Southern Europe, North America, and Australia (Lee, 1980). Safflower seeds contain α-linoleic acid, which used as cooking oil and clinically for the treatment of cataclasis, osteoporosis and rheumatoid arthritis in Korea (Kang et al., 1999; Kim, 1992; Lee et al., 2002). In addition, its flower has been utilized for folk medicine as an analgesic, antithrombotic and antihypertensive crude drug, as well as natural dye and food colorants (Han, 1988). It has been reported that main pathogens on safflower are Alternaria alternata (leaf spot), Botrytis cinerea (gray mold), Colletotrichum acutatum (Anthracnose), Fusarium oxysporum (Fusarium wilt), Phytophthora cactorum (Phytophthora root rot), Puccinia carthami (rust), Sclerotium rolfsii (collar rot), and Sphaerotheca fuliginea (powdery mildew) worldwide (Farr and Rossman, 2016). Recently, we observed wilt symptoms on safflower grown in green house in Jeonju, Korea, thus leading to identify the causal agent of the wilt disease in this study.

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