ISSN:
1432-0789
Keywords:
Isouron
;
Rice seedling
;
Uptake
;
Translocation
;
Metabolism
;
Broadleaf herbicide
;
Oryza sativa
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Geosciences
,
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Isouron, a pre-emergence herbicide, inhibited the growth of rice seedlings in a nutrient solution; the critical concentration was about 0.10 mg l-1. Isotope studies showed that isouron, added to the nutrient solution, was observed by the rice roots and translocated rapidly to the shoot. In rice seedlings, isouron was converted to six known metabolites, 3-(5-(1-dimethyl-2-hydroxy-ethy)-3-isoxazolyl]urea, 3-(5-tert-butyl-3-isoxazolyl)-1-methylurea, 3-(5-tert-butyl-3-isoxazolyl)ure, 3-amino-5-tert-butylisoxazole, 3-[5-(1,1-dimethyl-2-hydroxyethyl)-3-isoxazolyl]-1-dimethylurea, and 3-[5-(1,1-dimethyl-2-hydroxyethyl)-3-isoxazolyl]-1-methylurea, and two unknown metabolites.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00336295
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