Hozawa Mika, Nawata Eiji
Laboratory of Tropical Agriculture, Department of Agriculture, Kyoto University, Kitashirakawa Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
Plants (Basel). 2020 Feb 10;9(2):226. doi: 10.3390/plants9020226.
The objective of this study was to assess the magnitudes of the leaf allelopathy of in two different habitats, and discuss the driver of the differences, including rhizobia. The magnitudes of leaf allelopathy of the samples collected in two different habitats were assessed by comparing the hypocotyl and radicle lengths of the lettuce seeds tested on the samples. One habitat was in and adjacent to an forest, while the other was more than 50 m away. is indigenous to Hawaii and known to have a close symbiotic relationship with for nitrogen-fixing. Within the past three years, has newly invaded both sampling sites, whereas the forest has been there for several decades. The combined result of both hypocotyl and radicle lengths of the lettuce seeds tested on both sites by linear model and multicomparison analyses showed no significant difference. But the radicle lengths of the lettuce seeds tested on sampled in and adjacent to the forest were significantly longer than those of the samples more than 50 m away, as measured by -test (p = 0.05). This result suggested that the magnitude of the leaf allelopathy of depended on the distance of the habitat from the forest.
本研究的目的是评估在两种不同生境下[植物名称]叶片化感作用的强度，并探讨包括根瘤菌在内的差异驱动因素。通过比较在样品上测试的生菜种子的胚轴和胚根长度，评估在两种不同生境中采集的样品的叶片化感作用强度。一种生境位于[森林名称]森林内部及周边，而另一种生境距离该森林超过50米。[植物名称]原产于夏威夷，已知与[共生植物名称]存在密切的共生固氮关系。在过去三年中，[植物名称]新侵入了两个采样地点，而[森林名称]森林已经存在了几十年。通过线性模型和多重比较分析对两个地点测试的生菜种子的胚轴和胚根长度的综合结果显示没有显著差异。但是，通过t检验（p = 0.05）测量，在[森林名称]森林内部及周边采集的[植物名称]样品上测试的生菜种子的胚根长度明显长于距离该森林超过50米的样品。这一结果表明，[植物名称]叶片化感作用的强度取决于生境与[森林名称]森林的距离。
