Moisture Conditions for testing Germination

THE International Standards for Seed Testing 1 detail the requirements for assessing the viability of many species, but provide only general directions for the moisture regime to be used, namely, “For most kinds of seeds, blotters or other paper substrata should not be so wet that by pressing, a fil...

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Bibliographic Details
Published in:Nature (London) 1961-04, Vol.190 (4773), p.367-367
Main Authors: COLLIS-GEORGE, N, SANDS, JOCELYN E
Format: Article
Language:English
Subjects:
Humanities and Social Sciences
letter
multidisciplinary
Science
Science (multidisciplinary)
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Summary:THE International Standards for Seed Testing 1 detail the requirements for assessing the viability of many species, but provide only general directions for the moisture regime to be used, namely, “For most kinds of seeds, blotters or other paper substrata should not be so wet that by pressing, a film of water forms round the finger”. In soil physics terminology, these substrata would be at an indefinite suction approaching zero (that is, free water). Furthermore, the suction is not necessarily constant throughout the test, namely, “subsequent watering if any should be left to the analyst”.
ISSN:0028-0836
1476-4687
DOI:10.1038/190367a0