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Germinability and Longevity of Teliospores of Puccinia coronata f. sp. avenae. Allen S. Heagle, Former Research Assistant, Department of Plant Pathology, University of Minnesota, St. Paul 55101, Present address of senior author: Crops Research Division, ARS, USDA, National Air Pollution Control Administration, 1227 Gardner Hall, North Carolina State University, Raleigh 27607; M. B. Moore, Associate Professor, Department of Plant Pathology, University of Minnesota, St. Paul 55101. Phytopathology 60:617-618. Accepted for publication 28 October 1969. DOI: 10.1094/Phyto-60-617.

Teliospores of Puccinia coronata f. sp. avenae produced on field-grown Avena sativa germinated well when exposed to weathering from 2 October to 18 April. Teliospores weathered for shorter periods either germinated poorly or not at all. Once germinable, teliospores retained germinability for over 22 months when stored at 196 C or 13 C.