Original scientific paper

The Effect of Atrazine on Photosynthesis in Some Inbred Lines and Hybrids of Maize

Lidija Stefanović ; Srbija
Marijana Plesničar ; Srbija

Abstract

Althought most of the literature data indicate that the maize plants are resistant to triazine herbicides, there are some inbred lines in which an increased susceptibility has been noticed.
The aim of this work was to study the effect of atrazine (2-chloro- -4-ethylamino-6-izopropylamino-s-triazine) on the photochemical activities and content of chlorophylls in four inbred lines (OH-43, C-103, R-59, TD-191) and two hybrids (ZP SC-666t, ZP SC-48A).
The rate of oxygen evolution in the suspension of isolated chloro- plasts with potassium ferricyanide as an electron acceptor has been measured by application of an oxygen electrode. The rate of ATP synthesis by non-cyclic photophosphorylation as well as the contents of chlorophyll per gram of fresh leaf have also been recorded.
The results indicate that atrazine applied in concentration 1,02 X 10 min4 mols/2,7 kg. of sand for 10 plants has an inhibitory effect on the tested photochemical activities.

Keywords

Hrčak ID:

158067

URI

https://hrcak.srce.hr/158067

Publication date:

31.12.1976.

Article data in other languages: croatian

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