[article]
| Titre : |
Mutual exclusivity in seed traits : implications for conservation and ecology |
| Auteurs : |
Ganesh K. Jaganathan, Auteur |
| Article en page(s) : |
pp. 485-494 |
| Langues : |
Anglais (eng) |
| Catégories : |
[Thèmes] Conservation
[Thèmes] Dormance des graines
[Thèmes] Ecologie
[Thèmes] Graines
|
| Mots-clés : |
tolérance à la dessiccation |
| Résumé : |
"Despite recognizing that contemporary spermatophytes produce desiccation-tolerant (DT) and desiccation-sensitive (DS) seeds half a century ago, accurately assigning a species to a specific category remains a significant challenge. Seed Information Database (SID) contains storage behavior data for almost 25,000 species, of which many are doubtfully assigned, posing limitations for applications in conservation and ecological understanding. Here, a theory of "mutual exclusivity" for seed traits is proposed and tested on 1692 species from 110 families with known records of DS, DT, and impermeable seed coat, i.e. physical dormancy (PY) and epicotyl dormancy. The analysis shows that genera-producing seeds of DS and PY exhibit a mutually exclusive relationship, thus PY genera produces only DT seeds. PY occurs in 228 genera, and extrapolating total numbers show that 19,959 species definitively produce DT seeds. DS and other classes of dormancy, including physiological, morphological and epicotyl dormancy, can coexist in numerous genera." (source : auteur) |
| Type de publication : |
périodique |
| Référence biblio : |
Jaganathan G., 2025 - Mutual exclusivity in seed traits : implications for conservation and ecology. Botany letters, 172 (4) : 485-494. |
| ID PMB : |
73357 |
| Permalink : |
http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=73357 |
in Botany letters > vol. 172, n°4 (Année 2025) . - pp. 485-494
[article]
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trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Affiner la rechercheModelling seed dormancy cycling and seedling emergence of Thlaspi arvense in field soils and a global warming scenario in Plant biology, vol. 28, n°1 (Année 2026)
Comparative seed dormancy and germination of eight annual species of ephemeral wetland vegetation in a Mediterranean climate in Plant ecology, vol. 214 (Année 2013)
Graines des feuillus forestiers : de la récolte au semis (1994)
