Cauchy, Cauchy-Santos-Sartori-Faria, Logit, and Probit Functions for Estimating Seed Longevity in Soybean

Author(s)

Pereira dos Santos, Amanda Rithieli ^[1] ; de Faria, Rute Quelvia ^[2] ; Amorim, Deoclecio Jardim ^[1] ; Retameiro Giandoni, Valeria Cristina ^[1] ; Amaral da Silva, Edvaldo Aparecido ^[1] ; Pereira Sartori, Maria Marcia ^[1]

Affiliation

^[1] Sao Paulo State Univ UNESP, Dept Plant Prod & Breeding, Coll Agr Sci, Botucatu, SP - Brazil

^[2] Fed Inst Goiano, Urutai, Go - Brazil

• Document type: Journal article
• Source: AGRONOMY JOURNAL; v. 111, n. 6, p. 2929-2939, NOV-DEC 2019.
• Web of Science Citations: 1

Abstract

Seed longevity is characterized as the time for which seed remains viable during storage. Seed longevity can be estimated by a Probit model that determines the period in which 50% of seeds have lost viability (P-50). The transformed data are binary and when they are not normally distributed, it is necessary to modify the Probit model or apply other functions to estimate longevity. This work aimed studied the use of the Logit, Cauchy, and Cauchy-Santos-Sartori-Faria (Cauchy-SSF) functions to estimate the longevity of soybean seed {[}Glycine max (L.) Merr.] and compared Probit longevity models for the ordinary least squares (OLS) adjustment method and the generalized linear model (GLM). Ten seed lots were used to estimate water content, germination, and longevity. The P-50 data were transformed via the Probit, Logit, Cauchy, and Cauchy-SSF functions to estimate the coefficients of determination, the Akaike information criterion, deviance, dispersion, and the regression residuals. The effect on the results was observed, depending on the link function. The Cauchy-SSF function as part of the OLS method estimated longevity in eight seed lots within the interval of interest (II), and the Cauchy function as part of the GLM estimated longevity in nine seed lots. The Cauchy, Cauchy-SSF, and Logit models were capable of estimating the longevity of soybean seeds (P-50) slightly better than the Probit model. We suggest the Cauchy-SSF function for the OLS method and the Cauchy function for the GLM method to estimate soybean seed longevity when the data are not normally distributed. (AU)

• FAPESP's process: 16/13126-0 - Software for predicting physiological quality of seeds of agricultural crops
• Grantee: Maria Márcia Pereira Sartori
• Support Opportunities: Regular Research Grants