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首页> 外文期刊>Agricultural and Food Science >Invasion potential of herbaceous ornamental perennials in northern climate conditions
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Invasion potential of herbaceous ornamental perennials in northern climate conditions

机译：北方气候条件下多年生草本植物的入侵潜力

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We studied invasion potential of perennial herbaceous ornamental plants in Finland by using their reproduction success as an indicator. Altogether, 220 clones from 166 species were included in the studies. In common gardens, 50% of the species were found to produce seedlings and 75% rhizomes, respectively. Twelve of the clones produced neither seedlings nor rhizomes. Rankings of the invasion potential based on the two reproduction modes did not correlate. The species known for their invasion potential in temperate or cool climates were among the highest ranking seedling producers in the common gardens. In the field experiment, the highest seedling production (73%) was found in the semi-dry moisture regime, followed by the dry (40%) and the moist (27%) regimes. In the greenhouse experiment, 83% of the studied clones and 84% of the species emerged. Temperature sum required for the production of viable seeds for one third of the studied species is reached at least every second year in latitudes 62–63°N. Several perennial herbaceous ornamentals have potential for northward range expansion.
机译：我们以繁殖成功率为指标，研究了芬兰多年生草本观赏植物的入侵潜力。研究共包括来自166个物种的220个克隆。在普通花园中，发现该物种的50％分别产生幼苗和75％的根茎。其中有十二个克隆既没有幼苗也没有根茎。基于两种繁殖方式的入侵潜能等级并不相关。以其在温带或凉爽气候下的入侵潜力而闻名的物种是普通花园中排名最高的幼苗生产者之一。在田间试验中，在半干湿度条件下发现最高的幼苗产量（73％），其次是干态（40％）和潮湿（27％）。在温室试验中，出现了83％的研究克隆和84％的物种。在62-63°N的纬度中，至少每隔两年就会达到三分之一的被研究物种生产活种子所需的温度总和。几种多年生草本观赏植物具有向北扩展的潜力。

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