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Effects of Salinity on Accumulation and Distribution of Divalent Cations in Maize

Farida Begum
SSO
Agronomy Division, Gazipur

M. Abdus Sadeque
SO
Agronomy Division, Gazipur

Abstract/ Executive Summary:

An experiment was carried out under laboratory condition at Joydebpur during 2001-2002, plants (maize) were grown in culture solution (Hoagland solution) for ten days. With or without NaCl (100 mM NaCl) was used as treatment solutions. Samples were collected 10 days after germination and separated into root and shoot. Ions were collected by oxidizing dried tissues with 4ml of nitric acid and perchloric acid mixture. The result showed that accumulation of Ca²⁺ decreased by 36% in root and 52% in shoot of maize as compared to control when grown 100 mM NaCl. NaCl salinity stress did not have much effect on accumulation of Mg²⁺. A 24-26% increase in F²⁺ accumulation was observed under salinity as compared to control.

Keywords: Accumulation, Distribution, Divalent cations, Maize, perchloric acid

Location: Joydebpur

Start Date: 20-12-2001

End Date: 25-02-2002

Program Area: Variety and Species

Commodity: Maize

Objectives:

To fond out amount of toxic ions in maize grown in saline solution (Hoagland solution).

Methodology:

Maize grown in culture solution (Hoagland solution) for ten days with or without NaCl (100 mm NaCL) was used as treatment solution. Samples were collected after ten days after germination and separated into root and shoot. Ions were collected by oxidizing dried tissues with 4 ml of Nitric acid and Perchloric acid mixture.

Source of Information: Annual Report, Agronomy Division 2001-2002

Article Link (Online Journal):

Funding Source:

1. Asian Development Bank

Budget: 10,000/-

Total Budget (Tk.) : 10,000/-

Achievement/Findings:

The result showed that accumulation of Ca²⁺ decreased by 36% in root and 52% in shoot of maize as compared to control when grown in 100 mM NaCl. NaCl salinity stress did not have much effect on accumulation of Mg²⁺. A 24-26% increase in F²⁺ accumulation was observed under salinity as compared to control.

Knowledge Management: Report/Proceedings