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Observations on occurrence of cottonwood leaf rust in central United States
Author(s) -
McCRACKEN F. I.,
Schipper A. L.,
Widin K. D.
Publication year - 1984
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1984.tb00166.x
Subject(s) - larch , range (aeronautics) , spore , rust (programming language) , botany , biology , geography , materials science , computer science , composite material , programming language
Spore populations of Melampsòra medusae among Populus spp. were metered with spore traps along a north‐south axis in the central United States. Uredospores were collected earliest yearly at the southernmost location and at the northernmost locations where Larix laricina exist. They were found at other locations at progressively later dates. Aeciospores were found only at northern locations within the range of larch. Differences in uredospore numbers were related to variations in temperature and rainfall.