Abstract
CCC (2-chloroethyl)trimethylammonium chloride applied to plants ofChenopodium rubrum during floral induction led to an increase in the level of endogenous cytokinins in the apical buds. Application of gibberellic acid or indole-3-acetic acid at concentrations reversing the effect of CCC reduced the level of cytokinins. After simultaneous treatment with both CCC and one of the growth substances this reduction was less pronounced. From the comparison bf the present results, as well as of those published in previous papers it follows that in apical buds ofChenopodium rubrum there exists a mutual interaction between gibberellins and cytokinins. Under certain conditions both these groups of hormones may substitute for each other in flowering. IAA seems to affect flowering by regulating the level of both gibberellins and cytokinins.
Abstract
CCC aplikovaný na rostlinyChenopodium rubrum během květní indukce vedl ke stoupání hladiny endogenních cytokininů v apikálních pupenech. Aplikace giberelinu nebo kyseliny indolyloctové v koncentracích revertujících účinek CCC snižovala hladinu cytokininu. Po současné aplikaci CCC a jedné z uvedených růstových látek byl tento pokles slabší. Ze srovnání výsledků pbblikovaných v předkládané, jakož i v dřívějších pracích vyplývá, že v apikálních pupenechChenopodium rubrum existuje vzájemná interakce mezi gibereliny a cytokininy. Za určitých okolností se obě tyto skupiny růstových hormonů mohou při kvetení substituovat. Zdá se, že účinek kyseliny indolylottové na kvetení spočívá v tom, že reguluje hladinu jak giberelinů, tak cytokininů.
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Teltscherová, L. Changes in the level of endogenous cytokinins in apical buds ofChenopodium rubrum L.. Biol Plant 12, 134–138 (1970). https://doi.org/10.1007/BF02920861
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DOI: https://doi.org/10.1007/BF02920861