Dias L S
Departamento de Biologia, Centro de Ecologia Aplicada, Universidade de Evora, Ap. 94, 7002-554 Evora, Portugal.
J Chem Ecol. 2001 Feb;27(2):411-8. doi: 10.1023/a:1005644808956.
Phytotoxic studies strongly depend on evaluation of germination responses, which implies the need for adequate procedures to account for distinct aspects of the germinative process. For this, indices, comparisons among treatments at various times, and model fitting have been proposed. The objective of this work is to compare the three approaches and select the one providing the greatest insight and precision. Speed of germination, speed of accumulated germination, the coefficient of the rate of germination, comparisons at each determination time, including final germination, and the parameters of the Weibull function were examined. The Weibull function proved the best approach to describe the germination process, providing not only the same type of information about the speed of germination, with greater precision, but also additional information about the initiation and shape of the germination response curve.
植物毒性研究在很大程度上依赖于对发芽反应的评估，这意味着需要有适当的程序来考虑发芽过程的不同方面。为此，人们提出了指数、不同时间处理之间的比较以及模型拟合等方法。这项工作的目的是比较这三种方法，并选择能提供最大洞察力和精度的方法。研究了发芽速度、累积发芽速度、发芽率系数、每个测定时间（包括最终发芽）的比较以及威布尔函数的参数。结果证明，威布尔函数是描述发芽过程的最佳方法，它不仅能以更高的精度提供关于发芽速度的相同类型信息，还能提供关于发芽反应曲线起始和形状的额外信息。
