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Potassium-Dependent Increase in RNA and Protein Synthesis in the Early Phase of Incubation of the Thermodormant Phacelia tanacetifolia Seeds ¹

Istituto di Chimica Agraria, Università degli Studi di Milano, Via Celoria, 2-20133 Milano, Italy

The seeds of Phacelia tanacetifolia Benth. cv Bleu Clair incubated at 30°C in the dark did not germinate and did not activate K⁺ uptake capacity. The administration of 1 millimolar K⁺ in the early phase of incubation stimulated RNA and protein synthesis. The possible role of K⁺ in promoting the marcromolecular syntheses during the early phase of germination is discussed.