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Effects of forest fuel smoke on dwarf mistletoe seed germination



Effects of forest fuel smoke on dwarf mistletoe seed germination



Great Basin Naturalist 47(4): 652-659



Seeds of three species of dwarf mistletoe, Arceuthobium americanum Nutt. ex Engelm., A. cyanocarpum Coulter and Nelson, and A. vaginatum subsp. cryptopodum (Engelm.) Hawksw. and Wiens, were exposed to smoke from buring forest fuels. Premeasured amounts of coniferous needles and branch wood were burned in a small incinerator with smoke passing through a closed chamber containing the seeds. Following three different smoke treaments and one high-temperature treatment, tests were conductd to evaluate the effects of these treatments on seed germination. Germination was inhibited for all species when the seeds were exposed to smoke for 60 minutes or longer. Seeds of A. americanum were unaffected by exposures of up to 40 minutes from fuels with high moisture contents, but enhanced germination occurred after 30 minutes of exposure to smoke from drier fuels. The percentage of germinating seeds of A. cyanocarpum and A. vaginatum showed little effect from exposures of up to 30 minutes.

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Accession: 001580947

Download citation: RISBibTeXText

DOI: 10.2307/41712380



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