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Influence of Naturally Occurring Compounds on Germination and Growth of Jack Pine
Author(s) -
Brown Robert Thorson
Publication year - 1967
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1936497
Subject(s) - germination , pteridium aquilinum , botany , biology , pinus <genus> , jack pine , allelopathy , solidago canadensis , ecological succession , greenhouse , invasive species , fern
Water extracts of 56 plants common in jack pine forests were used as moistening media for jack pine (Pinus banksiana Lamb.) seed germination tests. Nine of these extracts consistently inhibited germination. Five extracts often stimulated germination. Greenhouse tests indicated rapid denaturing of biologically active substances and stimulation of growth by Cornus canadensis. Field tests showed definite inhibition of Pinus banksiana germination in the presence of Prunus pumila, Gaultheria procumbens, and Solidago juncca. Best germination was observed in the presence of Pinus resinosa, Pteridium aquilinum, and Cornus canadensis. It is concluded that biologically active chemicals influence plant succession and distribution.