Journal Article

An Assessment of Genetic and Environmental Effects on Sporangial Development in Bracken [<i>Pteridium aquilinum</i> (L.) Kuhn] using a Novel Quantitative Method

Joanna M. Wynn, James L. Small, Robin J. Pakeman and Elizabeth Sheffield

in Annals of Botany

Published on behalf of Annals of Botany Company

Volume 85, issue suppl_2, pages 113-115
Published in print April 2000 | ISSN: 0305-7364
Published online April 2000 | e-ISSN: 1095-8290 | DOI: http://dx.doi.org/10.1093/oxfordjournals.aob.a010318
An Assessment of Genetic and Environmental Effects on Sporangial Development in Bracken [Pteridium aquilinum (L.) Kuhn] using a Novel Quantitative Method

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  • Ecology and Conservation
  • Evolutionary Biology
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A scheme for quantifying sporangial development on Pteridium fronds was constructed. Five stages of development were identified, and the percentage cover of each stage was estimated on one pinna of the frond in question. A weighted sum was calculated to give a single quantitative result. The scheme was used to identify developmental differences in bracken plants of four genotypes grown in factorial combinations of two light and two temperature regimes. Both increased temperature and increased light significantly increased the rate of sporangial development. Genotypes were significantly different from each other, and showed significant differences in response to their environment.

Keywords: Pteridium; bracken; spore; reproduction; sporangia; environment-genotype interaction; fern ecology

Journal Article.  0 words. 

Subjects: Ecology and Conservation ; Evolutionary Biology ; Plant Sciences and Forestry

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