Do higher resource capture ability and utilization efficiency facilitate the successful invasion of exotic plant? A case study of Alternanthera philoxeroides.
Do higher resource capture ability and utilization efficiency facilitate the successful invasion of exotic plant? A case study of Alternanthera philoxeroides.
复制标题
DOI：
10.4236/ajps.2013.49226
复制
发表时间：
2013-08
期刊：
影响因子：
--
通讯作者：
Xuyan Geng;S. Jiang;Bo Li-;Xiaoyun Pan
中科院分区：
文献类型：
--
作者：
Xuyan Geng;S. Jiang;Bo Li-;Xiaoyun Pan
我们检验了引进种群可能具有比本地入侵植物更高的资源捕获能力和利用效率的假设。在中国常见园艺条件下，对空心莲子草原生种群(阿根廷)和引进种群(美国)的最大光合速率(Pmax)、表观量子效率(Q)、比叶面积(SLA)、光合能利用效率(PEUE)、光合氮素利用效率(PNUE)、水分利用效率(WUE)、基于质量和面积的建叶成本(CCMASS和CCAEA)、基于质量和基于面积的叶片氮浓度(NMASS和NAARE)等生理生态特性进行了比较研究。对于Apo和Apa，Pmax、Q、Nass和WUE在本地种群和引进种群之间没有显著差异；引入种群的SLA显著低于本地种群，CCass显著低于本地种群，而NArea和CCArea显著高于本地种群。对于Apa，引进种群的PEUE和PNUE显著降低，而对于Apo，本地种群和引进种群之间的PEUE和PNUE没有显著差异。结果表明，在普通园林试验中，引进种群的资源捕获能力和资源利用效率并不比本地种群高，这表明这些性状可能不一定对入侵植物的成功入侵起到作用。
We tested the hypothesis that introduced populations may have higher resource capture ability and utilization efficiency than native ones of invasive plants. We compared ecophysiological traits including maximum photosynthetic rate (Pmax), apparent quantum yield (Q), specific leaf area (SLA), photosynthetic energy use efficiency (PEUE), photosynthetic nitrogen use efficiency (PNUE), water use efficiency (WUE), mass-based and area-based leaf construction cost (CCmass and CCarea), and mass-based and area-based leaf nitrogen concentration (Nmass and Narea) between native (Argentina) and introduced (USA) populations of two varieties (North Apa and South Apo) of Alternanthera philoxeroides under common garden conditions in China. For Apo and Apa, Pmax, Q, Nmass and WUE were not significantly different between native and introduced populations; introduced populations had significantly lower SLA and lower CCmass but significantly higher Narea and CCarea than native ones. For Apa, the introduced populations showed significantly lower PEUE and lower PNUE while for Apo, PEUE and PNUE were not significantly different between native and introduced populations. The results indicated that introduced populations of A. philoxeroides do not show higher resource capture ability and resource utilization efficiency than their native ones in the common garden experiment, suggesting that these traits may not necessarily contribute to successful invasion of invasive plants.