Graves J D, Taylor K
Department of Botany and Microbiology, University College London, Gower Street, London WC1E 6BT, UK.
New Phytol. 1986 Dec;104(4):681-691. doi: 10.1111/j.1469-8137.1986.tb00669.x.
The comparative growth of Geum rivale L. and Geum urbanum L. was determined, both over a range of temperatures under controlled conditions and throughout the year in field plots at three altitudes in the northern Pennines. Although under controlled conditions, the total dry matter accumulated was similar in both species, the change of relative growth rate with time was much more pronounced in G. urbanum than in G, rivale, especially at lower temperatures. In the field situation, there were no consistent differences in the overall growth pattern of the two species. The effect of altitude on growth was most pronounced during autumn and winter but was minimal in the summer. Root growth was less temperature-sensitive than shoot growth in both species and was enhanced during the autumn. It is concluded that climatic limitation of growth is not so severe as to be the sole factor determining the altitudinal distribution of the species pair.
在受控条件下的一系列温度范围内以及在奔宁山脉北部三个海拔高度的田间地块中，对水杨梅（Geum rivale L.）和城水杨梅（Geum urbanum L.）的生长情况进行了比较。尽管在受控条件下，两种植物积累的总干物质相似，但城水杨梅相对生长速率随时间的变化比水杨梅更为明显，尤其是在较低温度下。在田间情况下，两种植物的整体生长模式没有一致的差异。海拔对生长的影响在秋季和冬季最为明显，但在夏季最小。两种植物的根系生长对温度的敏感性低于地上部分生长，并且在秋季有所增强。得出的结论是，气候对生长的限制并不严重到成为决定这两种植物海拔分布的唯一因素。
