University of Helsinki, Department of Ecological and Environmental Sciences, Niemenkatu 73, Lahti, Finland.
Dose Response. 2006 Aug 8;4(3):217-24. doi: 10.2203/dose-response.05-024.Sinkkonen.
A mathematical model is presented to estimate the effects of phytochemicals on seed germination. According to the model, phytochemicals tend to prevent germination at low seed densities. The model predicts that at high seed densities they may increase the probability of seed germination and the number of germinating seeds. Hence, the effects are reminiscent of the density-dependent effects of allelochemicals on plant growth, but the involved variables are germination probability and seedling number. The results imply that it should be possible to bypass inhibitory effects of allelopathy in certain agricultural practices and to increase the efficiency of nature conservation in several plant communities.
本文提出了一个数学模型，用以估计植物化学物质对种子萌发的影响。根据该模型，植物化学物质往往会在种子密度较低时阻止种子萌发。该模型预测，在种子密度较高时，它们可能会增加种子萌发的概率和萌发种子的数量。因此，这些影响类似于化感物质对植物生长的密度依赖性影响，但所涉及的变量是萌发概率和幼苗数量。研究结果表明，在某些农业实践中有可能绕过化感作用的抑制作用，并在若干植物群落中提高自然保护的效率。
