Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

The influence of high temperature treatment on seed germination.

Abstract

The influence of high temperature treatments on the seed germination of several tree and shrub species was studied. High temperature (120°C) treatment significantly increased the germination rates of Vaccinium uliginosum and Spiraea salicifolia, slightly promoted germination of Sorbaria sorbifolia and Alnus sibirica [A. hirsuta var. sibirica], markedly reduced germination of Larix gmelinii, Pinus sylvestris var. mongolica and Betula dahurica [B. davurica], and slightly reduced germination of Betula platyphylla and Alnus japonica. Treatment at lower temperatures gave the following results: 50°C increased germination of Larix gmelinii and Betula platyphylla by 60 and 5.5%, respectively; 70°C increased germination of Pinus sylvestris var. mongolica and Sorbaria sorbifolia by 16.9 and 30.5%, respectively; and 90°C increased germination of Alnus japonica by 88%. Treatment at 120°C increased germination of Vaccinium uliginosum, Spiraea salicifolia and Alnus hirsuta var. sibirica by 434, 58.1 and 15%, respectively.