Sirgedaitė-Šėžienė Vaida, Marčiulynas Adas, Baliuckas Virgilijus
Laboratory of Forest Plant Biotechnology, Institute of Forestry, Lithuanian Research Centre for Agriculture and Forestry, Liepų str. 1, LT-53101 Girionys, Kaunas District, Lithuania.
Department of Forest Protection and Game Management, Institute of Forestry, Lithuanian Research Centre for Agriculture and Forestry, Liepų str. 1, LT-53101 Girionys, Kaunas District, Lithuania.
Plants (Basel). 2021 May 2;10(5):916. doi: 10.3390/plants10050916.
Climate change influences the ecological environment and affects the recruitment of plants, in addition to population dynamics, including Scots pine regeneration processes. Therefore, the impact of cover-dominant species extracts on the germination of pine seeds and morpho-physiological traits of seedling under different environmental conditions was evaluated. Increasing temperature reinforces the plant-donor allelochemical effect, reduces Scots pine seed germination, and inhibits seedling morpho-physiological parameters. Conditions unfavourable for the seed germination rate were observed in response to the effect of aqueous extracts of 2-year-old and 1-year-old under changing environmental conditions. The lowest radicle length and hypocotyl growth were observed in response to the effect of 1-year-old and 2-year-old under increasing temperature (+4 °C) conditions. The chlorophyll concentration in control seedlings strongly decreased from 0.76 to 0.66 mg g (due to current environmental and changing environmental conditions). These factors may reduce the resistance of Scots pine to the effects of dominant species and affect the migration of Scots pine habitats to more favourable environmental conditions.
气候变化影响生态环境，除了包括苏格兰松再生过程在内的种群动态外，还影响植物的更新。因此，评估了优势种提取物在不同环境条件下对松树种子萌发和幼苗形态生理特征的影响。温度升高会增强植物供体化感物质的作用，降低苏格兰松种子萌发率，并抑制幼苗形态生理参数。在环境条件变化的情况下，观察到2年生和1年生植物水提取物的作用对种子萌发率产生了不利条件。在温度升高（+4°C）条件下，观察到1年生和2年生植物的作用导致胚根长度和下胚轴生长最低。对照幼苗中的叶绿素浓度从0.76毫克/克大幅降至0.66毫克/克（由于当前环境和环境变化条件）。这些因素可能会降低苏格兰松对优势种影响的抵抗力，并影响苏格兰松栖息地向更有利环境条件的迁移。
