Evolution of flower and embryological characters in Aquifoliales in the light of molecular phylogeny

2015 Fiscal Year Final Research Report

• Project/Area Number: 25440208
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: Kyoto University
• Principal Investigator: Tobe H 京都大学, 理学(系)研究科(研究院), 名誉教授 (60089604)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: モチノキ目 / 花 / 生殖器官 / 形質進化 / 植物発生 / 植物形態

Outline of Final Research Achievements

This study clarified the following points about evolution in flower and えｍｂembryological characters of Aquifoliales (Aquifoliaceae, Cardiopteridaceae, Helwingiaceae, Phyllonomaceae, and Stemonuraceae). (1) Synapomorphies for Helwingiaceae and Phyllonomaceae include epiphyllous inflorescences, inferior ovaries, disk nectary, and tenunucellate ovules. (2) Autapomorphies for Phyllonomaceae include monochasial cymes, glandular trichomes on sepal margin, a gynoecium composed of two carpels usually in transversal position, parietal placenta, ovule number increase, and exotestal seeds. (3) Autapomorphies for Helwingiaceae include loss of petals, obhaplostemy, and ambophily. (4) Cardiopteridaceae and Stemonuraceae likely share a gynoecium composed of two carpels usually in adaxial and abaxial positions.

Free Research Field

植物分類学