Verkaar H J, VAN DER Medijden E, Breebaart L
Department of Population Biology, Research group Ecology of Plants and Herbivores, University of Leiden, P.O. Box 9516, 2300 RA Leiden, The Netherlands.
New Phytol. 1986 Sep;104(1):121-129. doi: 10.1111/j.1469-8137.1986.tb00640.x.
The effects of defoliation of Cynoglossum officinale L. and Verbascum thapsus L. on growth, net assimilation rate and dry matter distribution were studied under various nitrogen regimes. At high levels of nitrogen supply, there was a higher net assimilation rate (NAR) and a higher leaf weight ratio in defoliated plants than in undefoliated plants resulting in a faster growth of defoliated plants. In V. thapsus growth of defoliated plants did not differ significantly from undipped plants. In a low nitrogen regime all defoliated V. thapsus plants died. In the same regime C. officinale had a low NAR and thus showed little regrowth. Leaf nitrogen content was not significantly different from control plants.
在不同氮素水平下，研究了药用琉璃草（Cynoglossum officinale L.）和毛蕊花（Verbascum thapsus L.）去叶对生长、净同化率和干物质分配的影响。在高氮供应水平下，去叶植株的净同化率（NAR）较高，叶重比也高于未去叶植株，导致去叶植株生长更快。在毛蕊花中，去叶植株的生长与未去叶植株没有显著差异。在低氮条件下，所有去叶的毛蕊花植株都死亡。在相同条件下，药用琉璃草的净同化率较低，因此再生能力较弱。叶片氮含量与对照植株没有显著差异。
