Morphological and genetic analysis on isolation and maintain mechanisms of different corolla tube length using interspecific hybrid population

2014 Fiscal Year Final Research Report

• Project/Area Number: 24570101
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: The University of Tokushima
• Principal Investigator: YAMASHIRO Tadashi 徳島大学, 大学院ソシオ・アーツ・アンド・サイエンス研究部, 准教授 (50380126)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 種間交雑 / 花冠長 / 遺伝子型 / 雑種指数

Outline of Final Research Achievements

An interspecific hybrid population between Isodon logitubus and I. japonicus was investigated by morphometric and genetic analyses. Both morphometric analyses and joint estimation of ancestry and interclass heterozygosity based on the SSR markers revealed that the F2 and backcross with I. longitubes were dominant in the population. Strong incompatibility was observed between I. longitubus and I. japonicus from artificial cross experiments. Although bumblebee pollinated the flowers of I. longitubus and hybrids, those of I. japonicus seem to be failed. Asymmetrical structure of the hybrid population (toward to I. longitubus) might be caused by the mismatch of the body size and I. japonicus inflorescence.

Free Research Field

植物分類学