Mykala Robertson, West Texas A&M University

Assessing the Cytotoxic Effect of Atrazine on Plant Test Systems

Abstract: Atrazine is a water soluble herbicide used in large quantities in the Great Plains and has been known to cause abnormal endocrine disruptions across organisms. The experiment focuses on the agricultural chemical atrazine and an evaluation of green onions (Allium cepa) , cherry bomb tomatoes ( Solanum lycopersicum var. cerasiforme ), and hard red winter wheat sprouts ( Triticum, sp. ) as plant test systems. Cytological analysis and mitotic index of Allium cepa was performed as well as tissue analysis of all three test systems. The control group had no genetic abnormalities and a low mitotic index due to the decreased cell division in the winter. Results from the experimental groups showed chromosome stickiness, chromosome clumping, and chromosome breakage in the treated Allium cepa cells. Allium cepa plant tissues also contained trace amounts of atrazine. Future research should focus on agricultural chemicals in plant tissues and the chemical’s effect over a wide range of organisms to bring awareness to the public.

Keywords: atrazine, weedicide, Allium cepa, cytotoxic, chromosome, test system

Presentation Author(s):
Mykala Robertson* and Dr. Nabarun Ghosh

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