1990/06/01 by G. Laflamme, L. Archambault, Louis Archambault · 1 citation
Biochemistry, Genetics and Molecular Biology · Environmental Science · #Forest Insect Ecology and Management #Plant Pathogens and Fungal Diseases #Yeasts and Rust Fungi Studies
paper · doi:10.1080/07060669009501026
openalex publication_date 1990/06/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
The ascospore release of G. abietina var. balsamea was measured every hour for a period of 1339 hours; it was analyzed with regard to microclimatic factors, such as rain, relative humidity, air temperature, wind speed, and leaf wetness, which were also recorded on an hourly basis. The spore dispersal period started in the middle of July and ended in October, with a peak of spore release during the first 3 weeks of August. Leaf wetness measurements were best correlated with spore dispersal. Relative humidity and rain also showed a good correlation with spore dispersal but not as good as leaf wetness. Dew was not responsible for ascospores release. Mist or fog were most probably the cause of free water deposition and, as a result, the cause of spore release when no rain was recorded. Mist and fog were not measured directly but could be inferred from leaf wetness readings. Temperature had no direct effect on spore release.