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Chlorobenzoyl Chloride and Methyl Chlorobenzoate as Synthetic Plant Growth Regulators

Published online by Cambridge University Press:  12 June 2017

T. J. Allen ,
C. L. Leinweber ,
D. K. Prince  and
D. F. Bouchard
T. J. Allen
Affiliation:
Texas A&M Res. and Ext. Center, Vernon, TX 76384
C. L. Leinweber
Affiliation:
Environ. Quality Program, Texas A&M Univ.
D. K. Prince
Affiliation:
Dep. of Range Sci., Texas A&M Univ.
D. F. Bouchard
Affiliation:
Velsicol Corp., Chattanooga, TN
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Abstract

CBC (2,5-dichlorobenzoyl chloride) and MCB (methyl-2,5-dichlorobenzoate) function as plant growth regulators in a gaseous phase or in an aqueous solution. Sorghum [Sorghum bicolor (L.) Moench. ‘Martin’] and soybean [Glycine bicolor (L.) Merr. ‘Lee’] seeds were temporarily inhibited or delayed from germinating, but overcame the inhibition in time so there was no significant reduction in total germination. Seedlings produced from sorghum and soybean seed germinated and grown in aqueous solution of 35 μg/ml CBC or MCB were shorter and weighed less than control seedlings. Soybean seed treated with the vapors of CBC and MCB produced seedlings significantly reduced in dry weight as compared with that of controls. Foliar application of 500 or 1000 μg/ml of CBC significantly reduced the growth of soybean but not sorghum seedlings. Soybean seedlings treated with the vapors or an aqueous solution produced leaflets more narrow and thicker than control seedlings. A lethal response attributable to CBC or MCB was not recorded.

Type
Research Article
Information
Weed Science , Volume 23 , Issue 5 , September 1975 , pp. 428 - 432
Copyright
Copyright © 1975 by the Weed Science Society of America 

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References

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