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The Relationship between Shape and Size of Diaspores Depends on Being Seeds or Fruits
Open AccessArticle

An Angiosperm Species Dataset Reveals Relationships between Seed Size and Two-Dimensional Shape

IRNASA-CSIC, Cordel de Merinas, 40, E-37008 Salamanca, Spain
Department of Wild Life Conservation and Magamenent, Amazon State University (UEA), Napo EC-150950, Ecuador
Department of Biology, University of Évora, Ap. 94, 7002-554 Évora, Portugal
Author to whom correspondence should be addressed.
Horticulturae 2019, 5(4), 71;
Received: 25 June 2019 / Revised: 16 September 2019 / Accepted: 27 September 2019 / Published: 9 October 2019
Datasets containing information on seed size have been published and are currently available. Nevertheless, there is a lack in the literature of a dataset dedicated to seed shape. We present a preliminary version for a dataset on seed morphology based on a comparison of seed shape with geometric figures. Similarity of the outline of seed images with geometric models is considered as a basis to classify seeds according to the geometric figures they resemble (e.g., ellipse, oval, cardioid). This allows, first, the classification of plant species according to their geometric type of seed, and second, seed shape quantification. For each seed image, the percent of similarity of their outline with a geometric figure can be calculated as a J index. Similarity in absolute terms is considered only when the J index >90. This criterion is important to avoid ambiguity and increase discrimination. The dataset opens the possibility of studying the relationship between seed shape and other variables such as seed size, genome complexity, life form or adaptive responses. View Full-Text
Keywords: geometric curves; J index; morphology; shape; seed geometric curves; J index; morphology; shape; seed
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Cervantes, E.; Martín Gómez, J.J.; Gutiérrez del Pozo, D.; Silva Dias, L. An Angiosperm Species Dataset Reveals Relationships between Seed Size and Two-Dimensional Shape. Horticulturae 2019, 5, 71.

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