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Articles

THE RELATIONSHIP BETWEEN SUCROSE AND CYTOKININS IN THE REGULATION OF GROWTH AND BRANCHING IN POTATO CV. DÉSIREE SHOOT CULTURES

Article number
462_46
Pages
319 – 324
Language
Abstract
We studied the effect of sucrose, adenine, 6-benzylaminopurine and kinetin on shoot elongation and branching parameters of potato shoot cultures.
According to our findings, branching seldom occurs on lowest positioned axillary buds.
In the absence of exogenous cytokinins, branching was regulated by sucrose which increased not only the number of activated axillary buds but also their length.
Both sucrose and cytokinins decreased the length of the main shoot of the explant and the number of new internodes.
Thus it seems that in potato sucrose takes control over processes which in other species are usually in the domain of cytokinin regulation.
Cytokinins however stimulated transition of axillary buds into stolons.
This process was acropetal and postponed in relation to the formation of leaf bearing lateral shoots.

Publication
Authors
D. Vinterhalter, B. Vinterhalter, M. Calovic
Keywords
Solanum tuberosum L., in vitro propagation, axilary buds
Full text
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