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- Mathew, F. M.; Rashid, K. Y.; Gulya, T. J.; Markell, S. G.
- Plant disease 2015 v.99 no.1 pp. 160
- Helianthus annuus, etc ; DNA; Diaporthe gulyae; agar; conidia; death; disease severity; filling period; greenhouses; growing season; hyphae; internal transcribed spacers; lodging; mycelium; pathogenicity; pathogens; petioles; photoperiod; pith; pycnidia; stem cankers; stems; streptomycin; sulfates; temperature; Australia; Manitoba; United States; Show all 28 Subjects
- ... During September 2012, Phomopsis stem canker was observed on sunflowers (Helianthus annuus L.) in a production field during seed filling with an average incidence of 15% in Morden, Manitoba (approximately 49°11′N and 98°09′W). The infected plants had elongated, brown-black lesions surrounding the leaf petiole, with numerous pycnidia, pith damage, and mid-stem lodging. Twenty sunflower plants were ...