Aspen Bibliography

Effect of Humidity on the Longevity of Populus and Ulmus Seeds in Storage

L.P.R. Johnson

Document Type

Article

Journal/Book Title/Conference

Canadian Journal of Research

Volume

24C

Issue

6

First Page

298

Last Page

302

Publication Date

1946

Abstract

Storage of Populus tremuloides and P. grandidentata seeds at room temperature in a controlled-humidity series showed the optimum to be 20% relative humidity for both species. At this humidity level, seed viability was retained by P. grandidentata for 555 days and by P. tremuloides for 455 days, as compared to approximately 28 days for both checks (open air).Similar storage of seeds of four Ulmus species showed tolerance of a wide humidity range by all species, the optimum storage condition being within a range of approximately 20 to 50% relative humidity.Germinability in all four Ulmus species was greatly increased when seeds were tested in a lighted germinator.

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