Effects of Atrazine on Chlorophyll Retention in Corn Leaf Discs

Corn (Zea mays L. ‘Dixie 18′) leaf discs were incubated in light or darkness in dilute solutions of 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) with and without 6-furfurylamino-purine (kinetin). Kinetin decreased chlorophyll loss in light whereas atrazine had no effect. In darkn...

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Bibliographic Details
Published in:Weed science 1972-01, Vol.20 (1), p.86-89
Main Authors: Copping, Leonard G., Davis, D. E.
Format: Article
Language:English
Subjects:
Callus
Chlorophylls
Corn
Cytokinins
Factorials
Herbicides
Leaves
Plants
Triazines
weed science
weeds
Zines
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Summary:Corn (Zea mays L. ‘Dixie 18′) leaf discs were incubated in light or darkness in dilute solutions of 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) with and without 6-furfurylamino-purine (kinetin). Kinetin decreased chlorophyll loss in light whereas atrazine had no effect. In darkness atrazine at a concentration of 5 × 10−8M increased clorophyll a retention in the absence of exogenous kinetin; but in the presence of 1.5 μg/ml of kinetin, the herbicide increased loss of chlorophyll a. Increasing the kinetin concentration to 15 μg/ml relieved the effect of 5 × 10−8M atrazine, but 10−7M atrazine increased chlorophyll loss. Higher concentrations of kinetin (150 and 1500 μg/ml) prevented all effects of atrazine. Factorial analysis revealed a highly significant interaction between atrazine and kinetin.
ISSN:0043-1745
1550-2759
DOI:10.1017/S0043174500035013