Eun Su Kang, Han Gyeol Kim, M. Nam, Mi-Jung Choi, D. Son
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引用次数: 0
摘要
本文首次在韩国报道了来自群山县、高昌县和济州县的外来入侵物种Brassicaceae。芸苔属(Brassica tournefortii)与芥菜和甘蓝型油菜(B.juncea and B.napus)很容易区分开来,因为它的茎和叶基部有浓密的刚毛,茎基部和远端有分枝,果实部分开裂,种子在潮湿的情况下会变得粘稠。尽管一些分类学家根据其果实和种子特征将该物种归类为Coincya Rouy,但果瓣上有一条叶脉的存在以及我们使用内部转录间隔区序列进行的最大似然分析将其归入芸苔属。本文提供了B.tournefortii的分布数据、照片和描述。此外,在不同的气候情景下,预测了B.tournefortii分布的潜在变化,但我们的分析表明,该物种传播的可能性很低。然而,持续监测对于准确评估是必要的。本研究的结果可用于进行入侵风险评估,并有助于有效管理这种入侵外来物种。
New record and prediction of the potential distribution of the invasive alien species Brassica tournefortii (Brassicaceae) in Korea
The invasive alien species Brassica tournefortii Gouan (Brassicaceae) is herein reported for the first time in Korea, from Gunsan-si, Gochang-gun, and Jeju-si. Brassica tournefortii can easily be distinguished from B. juncea and B. napus by its dense stiff hairs at the base of the stem and leaves, basally and distally branched stems, partially dehiscent fruits, and seeds that become mucilaginous in the presence of moisture. Although some taxonomists have classified this species as belonging to Coincya Rouy based on its fruit and seed characteristics, the existence of one vein on the fruit valves and our maximum likelihood analysis using internal transcribed spacer sequences placed it in Brassica. Distribution data, photographs, and a description of B. tournefortii are presented herein. Moreover, potential changes in the distribution of B. tournefortii were predicted under different climate scenarios, but our analysis showed that the probability of the spreading of this species is low. Nevertheless, continuous monitoring is necessary for an accurate assessment. The results of the present study can be used to conduct an invasion risk assessment and can assist with the effective management of this invasive alien species.