How and why to measure the germination process?
How and why to measure the germination process?
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DOI：
10.1590/s0100-84042006000100002
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发表时间：
2006-03-01
影响因子：
1.6
通讯作者：
Santana, Denise Garcia de
中科院分区：
文献类型：
--
作者：
Ranal, Marli A.;Santana, Denise Garcia de
(How为什么要测量发芽过程？）。在过去的两个世纪里，已经发表了包括发芽过程测量的论文。数学表达式的高度多样性使得论文之间的比较和有时结果的解释变得困难。因此，在本文中包括有关发芽过程的测量的评论，包括在特定的文献中的几个数学表达式的分析，恢复的历史，意义，和一些发芽测量的局限性。测定了种子的发芽率、发芽时间、发芽均匀系数（CUG）、发芽时间变异系数（CV1）、发芽率（平均速率、加权平均速率、速率系数、乔治发芽速率、Timson指数、GV或Czabator指数; Throneberry和Smith方法及其改进，包括Maguire速率; ERI或出苗率指数、发芽指数及其修正）、与发芽相对频率分布相关的不确定性（U）和同步指数（Z）。包括发芽测量的限度，以使比较期间的解释和决定更容易。时间、速率、均匀性和同步性是可以测量的方面，它们为发芽过程的动态提供信息。这些特征不仅对生理学家和种子技术专家很重要，而且对生态学家也很重要，因为可以根据收获种子的发芽能力来预测一个物种的成功程度，从而允许在环境中招募形成的幼苗的一部分。
(How and why to measure the germination process?). In the last two centuries, papers have been published including measurements of the germination process. High diversity of mathematical expressions has made comparisons between papers and some times the interpretation of results difficult. Thus, in this paper is included a review about measurements of the germination process, with an analysis of the several mathematical expressions included in the specific literature, recovering the history, sense, and limitations of some germination measurements. Among the measurements included in this paper are the germinability, germination time, coefficient of uniformity of germination (CUG), coefficient of variation of the germination time (CV1), germination rate (mean rate, weighted mean rate, coefficient of velocity, germination rate of George, Timson's index, GV or Czabator's index; Throneberry and Smith's method and its adaptations, including Maguire's rate; ERI or emergence rate index, germination index, and its modifications), uncertainty associated to the distribution of the relative frequency of germination (U), and synchronization index (Z). The limits of the germination measurements were included to make the interpretation and decisions during comparisons easier. Time, rate, homogeneity, and synchrony are aspects that can be measured, informing the dynamics of the germination process. These characteristics are important not only for physiologists and seed technologists, but also for ecologists because it is possible to predict the degree of successful of a species based on the capacity of their harvest seed to spread the germination through time, permitting the recruitment in the environment of some part of the seedlings formed.