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Markku Nygren (email)

Männyn ja kuusen siementen massan vaihtelusta.

Nygren M. (1990). Männyn ja kuusen siementen massan vaihtelusta. Silva Fennica vol. 24 no. 1 article id 5410. https://doi.org/10.14214/sf.a15562

English title: Variation in the seed mass of Scots pine and Norway spruce

Abstract

Seed mass within any plant species is one of the least plastic components of plant structure. The aim of this study was to analyse the variation in the seed mass of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) in relation to three environmental factors: soil fertility, mean temperature and precipitation during seed filling period. Data published earlier on seed mass of these species on different sites and different years was used in the study.

The seed mass of both species was independent of soil fertility (forest type) but did vary between different years. It is hypothesized that if the seed-ripening summer is warmer than average, Scots pine seed mass tends to be smaller. In this study, seed mass varied independently of the amount of precipitation during the ripening summer. However, generalization of the results requires further study.

The PDF includes an abstract in English.

Original keywords
kuusi; mänty; lämpötila; sademäärä; siementen paino; siementen kypsyminen

English keywords
Pinus sylvestris; Picea abies; precipitation; temperature; seed mass; seed ripening

Published in 1990

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Available at https://doi.org/10.14214/sf.a15562 | Download PDF

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