[article]
| Titre : |
Letters to the twenty-first century botanist. Second series : “ what is a seed? ” – 3. How did we get there? Palaeobotany sheds light on the emergence of seed |
| Type de document : |
texte imprimé |
| Auteurs : |
Brigitte Meyer-Berthaud, Auteur ; Philippe Gerrienne, Auteur ; Cyrille Prestianni, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
pp. 434-439 |
| Langues : |
Anglais (eng) |
| Mots-clés : |
graine ovule paléozoïque tégument nucelle spermatophyte paléobotanique systématique |
| Résumé : |
"This paper discusses the main steps leading to the acquisition, during the Palaeozoic, of the seed habit. The earliest spermatophytes originated in the Late Devonian and produced small cupulate ovules characterized by an elaborated sporangial apex involved in pollination. The diversification of ovules during the Carboniferous led to a wider range of sizes and shapes, and an increasing importance of the integument. The earliest seeds containing embryos are reported in Carboniferous coniferophytes" (source : auteurs) |
| Type de publication : |
périodique |
| Référence biblio : |
Meyer-Berthaud B., Gerrienne P., Prestianni C., 2018 - Letters to the twenty-first century botanist. Second series : “ what is a seed? ” – 3. How did we get there? Palaeobotany sheds light on the emergence of seed. Botany letters, 165 : 434-439. |
| Permalink : |
http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=68145 |
in Botany letters > vol. 165, n°3-4 (Année 2018) . - pp. 434-439
[article]
|
Letters to the twenty-first century botanist. Second series : “ what is a seed? ” – 3. How did we get there? Palaeobotany sheds light on the emergence of seed in Botany letters, vol. 165, n°3-4 (Année 2018)