Coastal Adaptation of <i>Adenophora triphylla var. japonica</i>(Campanulaceae)

• 作者: Hiroshi Hayakawa Jun Yokoyama Katsura Ito Kyohei Ohga Miwako Muroi Ryo Arakawa Shin-Ichi Tebayashi Tatsuya Fukuda
• 来源期刊: 美国植物学期刊(英文)
• 学科: 生物学
• 关键词: ADAPTATION ADENOPHORA triphylla VAR. JAPONICA COASTAL Ecotype Heterochronic Leaf Thickness
• 年，卷（期）: 2013,（3）
• 页码范围: 596-601
• 页数: 6页
• 分类号: Q94

摘要

The comparative morphology and anatomy of leaves between the coastal ecotype and the normal type of Adenophora triphylla (Thunb.) A.DC. var. japonica (Regel) H.Hara (Campanulaceae) were examined to clarify the differences in morphological characters between the 2 groups. Morphological and anatomical analyses revealed that the coastal ecotype had a thicker leaf than the normal type, because of the increased size of epidermal and spongy cells. Thus, the main morphological change from the normal type into the coastal ecotype of A. triphylla var. japonica is the increase in leaf size, suggesting that the coastal ecotype may have evolved from the normal type via a heterochronic process.