文献类型：期刊文献

英文题名：Natural persistence of the coastal plant Glehnia littoralis along temperate sandy coasts

作者：Yang, Hong-Xiao[1] Chu, Jian-Min[2] Liu, Xiao-Shan[1]

第一作者：Yang, Hong-Xiao

通信作者：Yang, HX[1];Chu, JM[2]

机构：[1]Qingdao Agr Univ, Coll Resources & Environm, Qingdao Engn Res Ctr Rural Environm, Qingdao 266109, Shandong, Peoples R China;[2]Chinese Acad Forestry, State Forestry Adm, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, Beijing 100091, Peoples R China

年份：2017

卷号：7

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000394320100001)】；

基金：The study was supported by the Basic Research Fund of Chinese Academy of Forestry (CAFYBB2016ZD001 and CAFYBB2016SY005) and the Fund of Qingdao Agricultural University.

语种：英文

摘要：We studied germination behaviors and persistence mechanism of wild Glehnia littoralis, a typical coastal species at temperate sandy coasts of the North Pacific Ocean, and tested the hypothesis that the coastal plants may have evolved special seeds adapting to the coasts, by which they recruit and persist easily, occupying the coasts as ideal habitats. In the Shandong Peninsula, China, we investigated temperature and moisture conditions of coast sand in relation to germination and evaluated effects of sand burial, seawater immersion and sowing time on germination. When germination began, daily dawn temperatures of sand were about 10 degrees C and daily noon temperatures were about 25 degrees C; the temperatures were not different in the sand < 8 cm deep. The sand at these depths showed a significant difference in moisture contents. The seeds exhibited large germination rates if sand burial was at depths > = 3 cm and winter freezing was kept longer than 2.5 months. Seeds experiencing seawater immersion were able to germinate well. These evidences suggest that G. littoralis has evolved special seeds adapting to seawater dispersal and specific season rhythm. By the seeds, G. littoralis occupies temperate sandy coasts as ideal habitats to persist.