Pollen Germination and Tube Elongation in Petunia Inhibited or Reduced by Commercial Formulations of Pesticides in Vitro1

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Thirty-two commercial formulations of pesticides (insecticides, acaricides, and fungicides) were tested for their effect on the germination and tube elongation of petunia pollen on an artificial medium. The degree of inhibition of germination caused by 1000 ppm of actual material of the formulations ranged from total to no inhibition.

The spray adjuvant DuPont Spreader Sticker at 1000 ppm caused total inhibition of germination and accentuated markedly the toxicity of those pesticides with which it was combined. Xylene at 1000 ppm was not injurious to pollen.

The strong inhibiting effect of naled on pollen germination was slightly mitigated by rinsing the treated pollen with a calcium chloride-boric acid solution.

Document Type: Research Article

Publication date: April 1, 1972

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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