Kemball W D, Marshall C
School of Biological Sciences, University of Wales, Bangor, Gwynedd LL57 2UW, UK.
New Phytol. 1994 May;127(1):83-91. doi: 10.1111/j.1469-8137.1994.tb04261.x.
The distribution of P from single nodal roots, and the consequences of nodal rooting on local growth characteristics were investigated in order to evaluate the importance of nodal rooting in Trifolium repens. The movement of radiophosphate was mostly acropetal, and the principal sinks were the closest components to the supplied root. The branch stolon originating from the same node as the root was the mast significant sink, and its importance as sink increased the older and larger it became. Nodal rooting on the main stolon resulted in a localized increase in secondary branching on the primary branch originating from the same node. The results are discussed in terms of physiological integration in T. repens and other clonal plants.
为了评估白三叶草节生根的重要性，研究了单条节生根中磷的分布以及节生根对局部生长特性的影响。放射性磷酸盐的移动大多是向顶的，主要的吸收部位是与供应根最接近的部分。与根来自同一节的分枝匍匐茎是最重要的吸收部位，随着其变老和变大，作为吸收部位的重要性也增加。主匍匐茎上的节生根导致源自同一节的一级分枝上的二级分枝局部增加。根据白三叶草和其他克隆植物的生理整合对结果进行了讨论。
