Embryology and Seed Development inPereskia lychnidiflora(Cactaceae)

Autor:	Karina Jiménez-Durán, Judith Márquez-Guzmán, Salvador Arias-Montes, Aurea C. Cortés-Palomec
Rok vydání:	2014
Předmět:	Pereskia Homogeneous Genus Embryology Family cactaceae Botany Ovary (botany) Zoology Pereskia lychnidiflora Plant Science Biology biology.organism_classification
Zdroj:	Haseltonia. 19:3-12
ISSN:	1938-2898 1070-0048
Popis:	In order to increase our embryological knowledge of Pereskia, a genus considered the earliest member of Cactaceae, we followed the development of the flowers and seeds of Pereskia lychnidiflora, a species from southeastern Mexico. We compared our data with that available from other closely related members in the family. The embryological characterization showed that basic features are homogeneous across the family and supported the placement of P. lychnidiflora as a member of one of two Pereskia clades, the one sister to remaining cacti. Our data also supports the hypothesis that within the family Cactaceae, the evolutionary tendency is towards a reduction of the perisperm. A multilayered seed coat was observed in P. lychnidiflora. A novel finding was the presence of stomata along the basal and central part of the ovary, a character that has never been reported before in other members of Pereskia.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d00ec7c9ad9fbadba4d77a74b1bfc657 https://doi.org/10.2985/026.019.0102 Zobrazit plný text záznamu