VIEW ARTICLE

Ecology and Epidemiology

Germination of Alternaria solani Spores in Changing Osmotic Pressures. Paul E. Waggoner, The Connecticut Agricultural Experiment Station, New Haven 06504; Jean-Yves Parlange, The Connecticut Agricultural Experiment Station, New Haven 06504. Phytopathology 66:786-789. Accepted for publication 15 January 1976. DOI: 10.1094/Phyto-66-786.

Alternaria solani spores germinate more rapidly in 0.3 M sucrose than in either more or less dilute sucrose solutions, but the ratio of mean and standard deviation of germination times is about ?14 over a wide range. Frequent changes in sucrose concentration and thus osmotic pressure retard germination in proportion to the number of changes.