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Science 1 July 1966:
Vol. 153. no. 3731, pp. 69 - 70
DOI: 10.1126/science.153.3731.69
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Articles

Nitrogen- and Helium-Induced Anoxia: Different Lethal Effects on Rye Seeds

R. L. Latterell 1

1 Union Carbide Research Institute, Tarrytown, New York

Prolonged exposures to acute anoxia caused progressive reductions in the viability of hydrated seeds of Prolific rye. For equal exposures of 9 days or longer, mortality was significantly higher in helium than in nitrogen. The findings suggest that prolonged use of helium as a component of atmospheres in manned space capsules may be harmful.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)