文章基本信息

标题：EFFECTS OF LIGHT, SALT AND BURIAL DEPTH ON THE GERMINATION AND INITIAL SEEDLING DEVELOPMENT OF OENOTHERA DRUMMONDII
本地全文：下载
作者：Maria Dolores Infante-Izquierdo ; Pablo Hernandez ; Alejandro Polo 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2017
卷号：26
期号：8
页码：5502-5510
语种：English
出版社：PSP Publishing
摘要：Oenothera drummondii, native to the Atlantic Coast of North America, is an invasive species in the Iberian Peninsula, and in Marismas del Odiel Natural Reserve behaves as an alien plant representing an important conservation problem.O. drummondii's optimal germination occurs with a 12/12 hours photoperiod, independently of the application of a cold stratification. The exposure to salt (0.05 to 0.9 M NaCl) drastically reduces its germination, but the seeds remain dormant and germinate in the present of fresh water. The initial exposure to 0.9 M NaCl followed by distilled water was the combination that presented the highest germination rate. Similar to salt, burial depth has a negative effect diminishing the germination of the seeds, which remain dormant until they are on the surface.The aim of the present study was to analyse the effects of different parameters on its germination in order to get a better knowledge of the biology of the species and the article describes the inhibition of germination by salt and sand burial, characteristics that suppose an important adaptation, as it colonizes the coastal dunes, where salt is present and washed by rain water and sand is moved by the wind.
关键词：Oenothera drummondii;weed;alien plant;seed germination;salinity;sand burial