Observations on witches' brooms in Scots pine

Hintikka, T. J.

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T. J. Hintikka

Muutamia havaintoja männyn tuulenpesistä

Hintikka T. J. (1933). Muutamia havaintoja männyn tuulenpesistä. Acta Forestalia Fennica vol. 39 no. 2 article id 7273. https://doi.org/10.14214/aff.7273

English title: Observations on witches' brooms in Scots pine

Abstract

Witches' brooms of Scots pine (Pinus sylvestris L.) have been suggested to be genetic rather than caused by bacteria. Seeds were collected from cones growing in Scots pine witches' brooms. More than half (43) of the 84 seedlings grown from the seeds were stunted and resembled witches' broom. The growth of the normal and witches' broom like seedlings were compared. When the seedlings were 8 years old, the normal seedlings were in average 37 cm and the witches' broom like seedlings 8 cm high. The result supports the theory that the witches' broom like growth was inherited in the Scots pine seedlings.

The PDF includes a summary in German.

Original keywords
mänty; Pinus sylvestris; tuulenpesä; mutaatio

English keywords
mutation; witches' broom

Published in 1933

Available at https://doi.org/10.14214/aff.7273 | Download PDF

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