Open AccessApplication of the Richards function to the description of leaf area growth in maize (Zea mays L.)
Author(s) -
Andrzej Grzegorczyk
Publication year - 2014
Publication title -
acta societatis botanicorum poloniae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 29
eISSN - 2083-9480
pISSN - 0001-6977
DOI - 10.5586/asbp.1994.001
Subject(s) - tassel , zea mays , mathematics , function (biology) , logistic function , botany , horticulture , agronomy , biology , statistics , evolutionary biology
The leaf area growth in maize was approximated basing on the Richards function in the form of: y=A[l+b exp(-kt)]1/(1-m) . The constant coefficients of the Richards function were found by means of the Marquardt's method. The initial values of parameters were given basing on results of the preliminary approximation of the growth process by means of logistic function y = A[l+b exp(-kt)]-1. The procedure of nonlinear regression was found to be useful (curvilinear determination coefficient R2 = 0.995). The Richards curve precisely describes the course of changes of the leaf area in maize since sprouting to a tassel flowering phase