C2-substituted aromatic cytokinin sugar conjugates delay the onset of senescence by maintaining the activity of the photosynthetic apparatus
Keywords: EA; elemental analysis; ESI-MS; electrospray ionization-mass spectrometry; NMR; nuclear magnetic resonance; TLC; thin layer chromatography; BAP; 6-benzylaminopurine; MS medium; Murashige-Skoog medium; CKs; cytokinins; iP; N6-isopentenyladenine; BAPR