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Effect of Photosynthesis-inhibiting Herbicides on Non-photosynthetic Tobacco Callus Tissue

Published online by Cambridge University Press:  12 June 2017

L. S. Jordan ,
T. Murashige ,
J. D. Mann  and
B. E. Day
L. S. Jordan
Affiliation:
Department of Horticultural Science, University of California, Riverside, California
T. Murashige
Affiliation:
Department of Horticultural Science, University of California, Riverside, California
J. D. Mann
Affiliation:
Department of Horticultural Science, University of California, Riverside, California
B. E. Day
Affiliation:
Department of Horticultural Science, University of California, Riverside, California
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Abstract

The compounds 3-(p-chlorophenyl-1,1-dimethylurea (monuron), 5-bromo-3-sec-butyl-6-methyluracil (bromacil), 2-chloro-4-ethylamino-6-isopropylamino-s-triazine (atrazine), 2-chloro-4,6-bis (ethylamino)-s-triazine (simazine), 1,1′-dimethyl-4,4′-dipyridylium salt (paraquat), and 3-amino-1,2,4-triazole (amitrole) were added to a complete nutrient medium on which chlorotic Nicotiana tobacum was grown in the dark. Herbicide concentrations generally were 0, 10-4, 10-5, 10-6, and 10-7 molar. Callus growth was inhibited by molar concentrations greater than 10-7 for the triazines, 10-5 for monuron, 10-4 for bromacil, 10-6 for paraquat and amitrole. At these concentrations, interference with a mechanism other than photosynthesis was responsible for inhibition of growth.

Type
Research Article
Information
Weeds , Volume 14 , Issue 2 , April 1966 , pp. 134 - 136
Copyright
Copyright © 1966 Weed Science Society of America 

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References

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