Phomopsis Stem Canker of Sunflower
Phomopsis stem canker is a major yield limiting disease of sunflower (Helianthus annuus L.) in the world (Harveson et al. 2016). The disease was first described in 1980 from the Vojvodina region of the former Yugoslavia and the causal fungus was Diaporthe helianthi (syn. Phomopsis helianthi) (Muntañola-Cvetkovic et al. 1985). Following this first disease report, Phomopsis stem canker was reported in the 1980s and 1990s from several sunflower producing countries including Hungary (Nemeth et al.1981), Bulgaria (Mihailova 1984), the United States (Hajdu et al. 1984; Herr et al. 1983; Yang et al. 1984), France (Lamarque and Perny 1985; Regnault 1985), Ukraine and Moldova (Bogdanova et al.1986), and Russia (Scripka et al. 1993). In all these countries, D. helianthi was assumed to be the sole causal agent of Phomopsis stem canker although several researchers suspected that the disease may be caused by more than one species of Diaporthe (Aćimović and Štraser 1982; Herr et al. 1983; Yang and Gulya 1984).
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DOI of Published Version
Mathew, Febina; Harveson, Robert; Gulya, Thomas; Thompson, Susan; Block, Charles; and Markell, Samuel, "Phomopsis Stem Canker of Sunflower" (2018). Agronomy, Horticulture and Plant Science Faculty Publications. 292.