@article{447fc24195e64867875804c44c637f54,
title = "Seasonal changes in the cytokinin composition of xylem sap of apple.",
keywords = "apple, cytokinins, iP, isopentenyl-adenine, isopentenyl-adenosine, Malus domestica, trans-zeatin, trans-zeatin riboside, xylem sap, Z, [9R]iP, [9R]Z",
author = "J. Tromp and J.C. Ovaa",
year = "1990",
doi = "10.1016/s0176-1617(11)80221-x",
language = "English",
volume = "136",
pages = "606--610",
journal = "Journal of Plant Physiology",
issn = "0176-1617",
publisher = "Elsevier",
}