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Chronic Irradiation Studies in Conifers - A Preliminary Report

Samples of surviving seedlings were taken at the end of one growing season. The seedling weights did not differ significantly from the control populations. The major effect of chronic irradiation was higher lethality than under an acute regime. The surviving seedlings were normal in appearance and weight. It is concluded that, under a chronic regime, seeds do not survive at all with manifest damage.


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Author(s): W. P. Sweaney, G. M. Clark, W. R. Bunting

Publication: Tree Improvement and Genetics - Northeastern Forest Tree Improvement Conference - 1966