Elsevier

Plant Science

Volume 46, Issue 3, 1986, Pages 207-211
Plant Science

Differential sensitivity of suspension cultures of maize, several soybean genotypes and glycine canescens to the herbicide DPX-F6025, 2-(([(4-chloro-6-methoxypyrimidine-2-yl)amino carbonyl]amino sulfonyl)) benzoic acid, ethyl ester

https://doi.org/10.1016/0168-9452(86)90193-7Get rights and content

Abstract

Previous field observations and greenhouse studies described here involving DPX-F6025, a soybean herbicide, show that soybean cultivars and maize have different sensitivities to the herbicide. The sensitivity of suspension cultures of the soybean (Glycine max (L.) Merr.) cultivars A3127, Earlyana and Old Dominion, and G. canescens F.J. Herm and maize (Zea mays L.) were tested against varying concentrations of DPX-F6025. The response of the cells in vitro correlates well with the whole plant response since maize and Old Dominion are much more sensitive than G. canescens and A3127, and Earlyana is more tolerant yet. The respective I50 values were about 1, 5, 60, 75 and 800 nM. The inhibitory effect of 1 μM DPX-F6025 was at least partially reversed by exogenous valine and/or isoleucine. Levels of free isoleucine, leucine and valine in the cultured cells did not correlate with herbicide sensitivity.

References (12)

  • D. Scheel et al.

    Pest. Biochem. Physiol.

    (1985)
  • O.L. Gamborg et al.

    Exp. Cell Res.

    (1968)
  • J.M. Hutchison et al.

    Post. Biochem. Physiol.

    (1984)
  • J.S. Beitler et al.
  • J.L. Lloyd
  • T.B. Ray

    Plant Physiol.

    (1984)
There are more references available in the full text version of this article.

Cited by (0)

Present address: Haryana Agricultural University, Department of Genetics, Hisar, 125 004, India.

View full text