Abstract

Among salinity tolerance studies the piecewise linear method has been widely used to characterize crop response. The two parameters of this method have been determined for different species and compiled in tables by different authors. However, this information is not directly compatible with an allometric function proposed by Misle and Kahlaoui (2015 MisleE, KahlaouiB. 2015. Nonlinear allometric equation for crop response to soil salinity. J Stress Physiol & Biochem. 11:49–63. [Google Scholar]), which allows determining three mathematically characteristic points of the salinity response curve, among other advantages. In this work, a conversion way of the parameters of the piecewise linear function into the parameters needed by the allometric equation is presented, using data of vegetable crops, including in addition, the estimation of two of its characteristic points: the first 1:1 slope point and the inflection point. 31 parameter determinations were performed for 29 vegetable species. This particular way to fit this equation accurately describes the salinity crop response found in classic tables, starting only from the two parameters of the linear method. The scope of this particular application of the allometric function is discussed.

摘要

在盐度耐受性研究中，分段线性方法已广泛用于表征农作物响应。已针对不同物种确定了该方法的两个参数，并由不同的作者在表格中进行了汇总。但是，此信息与Misle和Kahlaoui（2015 Misle E，Kahlaoui B.， 2015年。作物对土壤盐分响应的非线性等速方程。J应力生理学与生物化学。11：49 - 63。 [Google Scholar]），它可以确定盐度响应曲线的三个数学特征点以及其他优点。在这项工作中，利用蔬菜作物的数据，提出了将分段线性函数的参数转换为异速方程的参数的方法，此外，还包括其两个特征点的估计：第一个1：1斜点和拐点。对29种蔬菜进行了31个参数确定。仅通过线性方法的两个参数，适合该方程式的特定方法可以准确描述经典表格中的盐分作物响应。讨论了异速函数的这种特殊应用的范围。