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INTERACTIONS OF LIGHT AND TEMPERATURE ON THE GERMINATION OF PLANTAGO MARITIMA L.
Author(s) -
ARNOLD SYLVIA M.
Publication year - 1973
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1973.tb04409.x
Subject(s) - germination , darkness , imbibition , plantago , biology , botany , horticulture
SUMMARY The percentage of seeds of Plantago maritima which germinated in the light increased linearly with temperature between 8 and 18° C. The response to fluctuating temperatures could be accounted for entirely by this linear relation. Germination was inhibited when seeds were kept in darkness during ihibition and percentage germination was shown to depend on the temperature of the seeds as well as the length of the dark period. Exposure to light at 25° C released the inhibition of some of the dark treated seeds but exposure to low temperature was ineffectual. Most of the seed came from Upper Teesdale but seed from Devon responded to germination tests in the same way. The germination of seeds of Kobresia simpliciuscula from Teesdale was also inhibited by darkness during imbibition. This type of response may promote the survival of seedlings in their natural environment.