Role of Cytokinins in Carnation Flower Senescence | Zendy

William Eisinger | Zendy

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Role of Cytokinins in Carnation Flower Senescence

Author(s) -

William Eisinger

Publication year - 1977

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.59.4.707

Subject(s) - carnation , kinetin , dianthus , senescence , biology , ethylene , botany , caryophyllaceae , vase life , cut flowers , horticulture , cultivar , microbiology and biotechnology , tissue culture , biochemistry , in vitro , catalysis

Stem and leaf tissues of carnation (Dianthus caryophyllus) plants appear to contain a natural antisenescence factor since removal of most of these tissues from cut carnation flowers hastened their senescence. However, kinetin (5-10 mug/ml) significantly delayed senescence of flowers with stem and leaf tissues removed. In addition, the life span of cut flowers with intact (30-cm) stems was increased with kinetin treatment. Peak ethylene production by presenescent flowers was reduced 55% or more with kinetin treatment and was delayed by 1 day. Kinetin-treated flowers were less responsive to applied ethylene (100 mul/l for 3 hours) than untreated flowers. Possible natural roles of cytokinins in carnation flower senescence are discussed.

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