Modelling for determination of fe uptake by brassica chinensis Jusl var. parachinensis (Bailey) Tsen & lee (flowering white cabbage)

Ahmad Mahir Razali, A. Arfah, Z. A. Rozaimah, S. Siti Adyani, Khairiah Jusoh, Ismail Sahid

Research output: Contribution to journalArticle

Abstract

The study was conducted to determine the best model suitable for the determination of ferrum uptake in Brassica chinensis (flowering white cabbage). A nonlinear regression model was selected to determine the amount of ferrum absorbed by each part of the Brassica chinensis plant namely the leaves, stems and roots. The Levenberg-Marquardt method was used to perform the nonlinear least square ft. This method employs information on the gradients and hence requires specifcation of the partial derivatives. A suitable model was obtained from the exponential regression model. The polynomial model was found to be appropriate for leaves, the mono-exponential model was suitable for stems and the simple exponential model for roots. The residual plots and the normal probability plots from each of the models indicated no substantial diagnostic problems, so it can be concluded that the polynomial and exponential regression models provide adequate ft to determine data on heavy metal uptake by the flowering white cabbage.

Original languageEnglish
Pages (from-to)2305-2313
Number of pages9
JournalSains Malaysiana
Volume46
Issue number12
DOIs
Publication statusPublished - 1 Dec 2017

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Brassica rapa subsp. chinensis
cabbage
flowering
uptake mechanisms
stems
least squares
leaves
heavy metals

Keywords

  • Brassica chinensis
  • Fe
  • Levenberg-Marquardt method
  • Nonlinear regression

ASJC Scopus subject areas

  • General

Cite this

Modelling for determination of fe uptake by brassica chinensis Jusl var. parachinensis (Bailey) Tsen & lee (flowering white cabbage). / Razali, Ahmad Mahir; Arfah, A.; Rozaimah, Z. A.; Siti Adyani, S.; Jusoh, Khairiah; Sahid, Ismail.

In: Sains Malaysiana, Vol. 46, No. 12, 01.12.2017, p. 2305-2313.

Research output: Contribution to journalArticle

Razali, Ahmad Mahir ; Arfah, A. ; Rozaimah, Z. A. ; Siti Adyani, S. ; Jusoh, Khairiah ; Sahid, Ismail. / Modelling for determination of fe uptake by brassica chinensis Jusl var. parachinensis (Bailey) Tsen & lee (flowering white cabbage). In: Sains Malaysiana. 2017 ; Vol. 46, No. 12. pp. 2305-2313.
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