Interaction between chlorsulfuron and phenylurea cytokinin 4-PU-30 in resistant and susceptible plants
2000
Georgiev, G. | Iliev, L. (Bulgarian Academy of Science, Sofia (Bulgaria). M. Popov Inst. of Plant Physiology)
Laboratory studies determined the effectiveness of the phenylurea cytokinin 4-PU-30 as protectant of corn (Zea mays) against postemergence chlorsulfuron injury. The effects of herbicide and cytokinin were also studied on wheat (Triticum aestivum), a species that is resistant to chlorsulfuron. 4-PU-30 and chlorsulfuron had opposite effects on the growth of corn and wheat plants: 4-PU-30 stimulated the growth of corn and suppressed that of wheat, whereas chlorsulfuron stimulated wheat growth and inhibited that of corn. Chlorsulfuron overcame the inhibition of wheat seedlings caused by 4-PU-30, and 4-PU-30 protected corn from postemergence applied sulfonylurea herbicide chlorsulfuron; moreover in some cases a stimulated growth of the seedlings was registered. The results indicated that 4-PU-30 acted as an antidote against chlorsulfuron on corn.
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