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- W2592267046 abstract "The cytokinin-like activity of some N-phenyl-N′-alkyl or arylthiourea derivatives and their influence on nitrogen metabolism of 6 days old barley seedlings was investigated. Solutions in concentrations of 10− 3, 10− 4, 10− 5 and 10− 6 M emulsified by 0,02% Tween-80 were used. Water as well as kinetin solution in a concentration of 10− 5 M were used as references. The cytokinin-like activity was determined on the basis of retardation of the chlorophyll breakdown in Raphanus sativa leaf discs. Free and total amino acids, total protein, non-protein and ammonium nitrogen in leaves and roots were determined. The highest cytokinin-like activity was observed in N-phenyl-N′-o-hydroxyphenylthiourea (172%); N-phenyl-N′-m-totylthiourea (115%); N-phenyl-N′-m-chlorophenylthiourea (118%); N-phenyl-N′-α-(5-aminonaphtyl) thiourea (112%); N-phenyl-N′-8-chinolylthiourea (210%); N-phenyl-N′-α-(6-phenylthioureidopyridyl) thiourea (140 %) ; N-phenyl-N′-2-hydroxy-5-nitrophenylthiourea (185%); N-phenyl-N′-α-pyridylthiourea (125%) and others. Substances with a high cytokinin-like activity produce a greater accumulation of nitrogen, free and total amino acids. The relationship between cytokinin-like activity and chemical structure of the compounds tested was also considered." @default.
- W2592267046 created "2017-03-16" @default.
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- W2592267046 date "1974-01-01" @default.
- W2592267046 modified "2023-09-26" @default.
- W2592267046 title "Synthese, chemische Struktur und cytokininähnliche Aktivität einiger Derivate des N-Phenyl-N′-Alkyl- oder Arylthioharnstoffs und deren Einfluß auf den Stickstoffmetabolismus in Gerstenkeimlingen" @default.
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- W2592267046 doi "https://doi.org/10.1016/s0015-3796(17)30994-0" @default.
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