Elevated temperature may accelerate invasive expansion of the liana plant Ipomoea cairica

Elevated temperature may accelerate invasive expansion of the liana plant Ipomoea cairica
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温度升高可能会加速藤本植物五爪金龙的入侵扩张

DOI:
10.1111/j.1365-3180.2011.00884.x
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发表时间:
2011-12
期刊:
影响因子:
1.7
通讯作者:
Xin X-W
Xin X-W
中科院分区:
农林科学3区
文献类型:
--
作者:
Wang R-L;Zeng R-S;Peng S-L;Chen B-M;Liang X-T;Xin X-W

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王瑞丽,曾荣生,彭绍林,陈宝明,梁晓婷,辛晓伟(2011)高温对藤本植物的入侵扩张有促进作用。杂草研究51,574-580。大量研究表明,二氧化碳水平的升高促进了藤本植物在森林中的建立,从而表明它们在这些栖息地的未来会增加。然而,关于潜在的全球变暖对这些植物的影响的信息有限。中国南方的许多森林都有入侵的仙人掌。我们推测,温度升高可能会改变这种植物的资源分配模式和化感作用潜力,从而导致入侵性增加。我们比较了种子萌发、生长速率和渗滤液的植物毒性。在三种温度下(22、26和30°C)。种子发芽率为1。在22℃、26℃和30℃时,凯里凯里虫率分别为11.6%、21.2%和26.4%。温度升高导致植物形态和生物量分配发生显著变化。cairica。随着温度的升高,植株的茎部生物量增加,而根系生物量减少。鲜叶浸出液的植物毒性[j]。根据受体植物的不同而变化,但在最高温度(30°C)下表现出最强的植物毒性作用。我们的结果为高温对化感电位、萌发和生长的影响提供了关键信息。凯瑞卡表示,全球变暖可能会增加这一物种的入侵性。
WangR‐L,ZengR‐S,PengS‐L,ChenB‐M,LiangX‐T &XinX‐W (2011) Elevated temperature may accelerate invasive expansion of the liana plantIpomoea cairica.Weed Research51, 574–580.SummaryNumerous studies have shown that elevated CO2levels promote liana establishment in forests, thus suggesting their increased prevalence in the future in these habitats. Limited information exists, however, concerning the effects of potentially increasing global temperatures on these plants. The invasive lianaIpomoea cairicahas infested many forests in South China. We hypothesised that elevated temperature could change the resource allocation pattern and allelopathic potential of this plant, resulting in increased invasiveness. We compared seed germination, growth rates and leachate phytotoxicity ofI. cairicaat three temperatures (22, 26 and 30°C). The seed germination rates ofI. cairicawere 11.6%, 21.2% and 26.4% at 22, 26 and 30°C respectively. Elevated temperature resulted in significant changes in morphology and biomass allocation ofI. cairica. Shoot biomass of the plant increased, while the root biomass decreased with increasing temperature. Phytotoxicity of aqueous leachates from fresh leaves ofI. cairicavaried depending on receptor plants, but showed the strongest phytotoxic effects at the highest temperature (30°C). Our results provide key information concerning the effects of elevated temperatures on the allelopathic potential, germination and growth ofI. cairicaand indicate that global warming could increase the invasiveness of this species.
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