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Translocation of leaf-fed 32P in pea plants as influenced by foliar and root applications of CCC and Phosfon

Vliv listové a kořenové aplikace CCC a fosfonu na translokaci listově aplikovaného32P v rostlinách hrachu

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Biologia Plantarum

Abstract

In controlled environment growth chambers, the effects of foliar and root applications of 2-chloroethyltrimethylammonium chloride (CCC) and 2,4-dichlorobenzyltributylphosphonium chloride (Phosfon) on the translocation of32P fed to leaves, were investigated. When applied to leaves or to root, CCC had no effect on the relative amounts of32P radioactivity retained by the fed leaf 5, 20 and 80 h after feeding. At 20 and 80 h after feeding, Phosfon concentrations of 0.01 and 0.1mg l−1 reduced retention of the applied32P. 80 h after32P feeding, CCC concentration of 1 mg l−1 applied as a foliar spray or to the root enhanced the downward movement of32P. Phosfon at low concentrations, particularly at 0.1 mg l−1, on the other hand, favoured an upward transport of the applied32P. Foliar applications of CCC and Phosfon at high concentrations had no significant effect on32P transport to the root and the shoot below the fed leaf, while root applications of CCC and of Phosfon inhibited downward transport. Root applications generally caused greater alterations in32P distribution patterns than did foliar applications. On the basis of total active ingredient uptake, Phosfon was more effective than CCC in altering translocation patterns.

Abstract

Byl sledován vliv listové a kořenové aplikace CCC a fosfonu na translokaci32P aplikovaného na list. CCC neovlivnil relativní obsah32P ve sledovaném listu po 5, 20 a 80 h. Fosfon v koncentracích 0,01 a 0,1 mg l−1 snížil obsah32P v listu po 20 a 80 h. CCC v koncentraci 1 mg l−1 zvýšil transport32P směrem dolů po 80 h a to při aplikaci na list i na kořen. Naproti tomu fosfon v nízkých koncentracích, zejména 0,1 mg l−1, zvýšil transport32P směrem nahoru. Listová aplikace CCC i fosfonu ve vysokých koncentracích neovlivnila významně transport32P ke kořenům nebo k prýtu pod listem, na nějž byl32P aplikován; kořenová aplikace transport dolů inhibovala. Obecně kořenová aplikace vyvolávala větší změny v distribuci32P než aplikace listová. Při přepočtu na celkový příjem, fosfon vyvolával větší změny v translokaci32P než CCC.

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Adedipe, N.O. Translocation of leaf-fed 32P in pea plants as influenced by foliar and root applications of CCC and Phosfon. Biol Plant 17, 161–166 (1975). https://doi.org/10.1007/BF02920828

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  • DOI: https://doi.org/10.1007/BF02920828

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