Comparing the reproductive biological characteristics of the alien invasive Coreopsis lanceolata to those of the non-invasive alien congener Coreopsis tinctoriz
Comparing the reproductive biological characteristics of the alien invasive Coreopsis lanceolata to those of the non-invasive alien congener Coreopsis tinctoriz
复制标题
外来入侵披针金鸡菊与非入侵外来同系金鸡菊繁殖生物学特性比较
DOI：
10.1111/1442-1984.12323
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发表时间：
--
影响因子：
1.4
通讯作者：
Ning Wang
中科院分区：
文献类型：
--
作者：
Jianjun Zeng;Bing Zhou;Ning Wang
重要的是要确定与外来物种成功相关的特征。然而，没有普遍的入侵生殖特征的综合征来解释入侵的成功尚未确定。对成功入侵或失败入侵的同类外来物种进行比较研究，有助于揭示入侵成功的驱动因素，并预测未来的分布。对入侵种披针叶金鸡菊（Coreopsis lanceolata）和非入侵种有色金鸡菊（Coreopsis tinctoria）的繁殖生物学特性（交配系统、开花物候、花综合征、传粉生物学和种子萌发）进行了研究。结果表明，C. Lanceolata对昆虫的吸引力是同类的11.67倍，而C.杉木叶面积与访虫量呈正相关。当地昆虫蜜蜂的高度吸引力保证了C.披针形。然而，没有通用的交配系统，因为它的同类不成功的外来物种。lanceolatastill由于自交亲和性和根茎的存在的组合策略而成功入侵。此外，在种子萌发能力方面，C. lanceolata的活性低于C.在干旱和Al 3+胁迫条件下，种子发芽率显著高于对照，表明种子发芽率可作为一个参考指标。但这并不是侵略性的绝对特征。因此，这些萌发特性可能减缓了C.中国南方的披针叶。这些研究结果强调，在植物入侵的风险评估方案中，应注意自交不亲和性和根茎的组合。
It is important to determine the characteristics associated with the success of alien species. However, there is no universal syndrome of invasion reproductive characteristics to explain the success of invasiveness has not been identified. Comparative studies on congeneric successful or non‐successful alien species are beneficial for revealing the drivers of invasion success and predicting future distributions. Reproductive biological characteristics, including the mating system, phenology of flowering, floral syndrome, pollination biology and seed germination have been investigated in the invasiveCoreopsis lanceolataand non‐successful congener alien speciesCoreopsis tinctoria. The results revealed thatC. lanceolatasignificantly attracted insect visitors by 11.67 times more than its congener, and the corolla density ofC. lanceolatawas positively correlated with the number of visiting insects. The high attraction of local insect beesApis ceranaguarantees the reproductive success and high seed production ofC. lanceolata. Nevertheless, there was no versatile mating system, because its congener non‐successful alien speciesC. lanceolatastill successfully invaded due to the combination strategies of self‐compatibility and presence of rhizomes. Furthermore, the ability of seed germination ofC. lanceolatawas lower than that ofC. tinctoria, especially under drought and Al3+stress, suggesting that germination performance can serve as a reference indicator. However, this was not an absolute trait for invasiveness. Hence, these germination traits might slow down the invasiveness ofC. lanceolatain south China. These present findings highlight that the combination of self‐incompatibility and rhizomes should be given attention in the risk assessment protocols for plant invasiveness.