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SEED DORMANCY IN UNIOLA PANICULATA
Author(s) -
Westra Raymond N.,
Loomis Walter E.
Publication year - 1966
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1966.tb07353.x
Subject(s) - germination , biology , endosperm , dormancy , seed dormancy , botany , stratification (seeds) , horticulture , imbibition , leaching (pedology) , desiccation , agronomy , ecology , soil water
Seeds of Uniola paniculata L., a sand‐dune grass of the Southeast coast, showed an increasing dormancy under laboratory germination conditions that reached 98–100% six months after maturity. The embryos were viable and nondormant and the seeds absorbed water readily. Chemical treatments were only moderately effective, but leaching the seeds after cutting into the endosperm gave 100% germination. The presence of a diffusible growth inhibitor was demonstrated by this response and by tests of endosperm leachate. Temperature, particularly sand temperature above 30 C, appears to be the major factor in normal germination of the seed.