Abstract
Exogenous treatments with cytokinins, such as 6-benzylaminopurine (BA), can delay senescence of someplant tissues. Grevillea 'Sylvia' in?orescences have a short vase life. BA supplied in vase solutions at up to0.1 mM did not delay senescence of G. 'Sylvia' in?orescences. However, BA applied by dipping at concentrationsup to 10 mM extended their vase life (longevity). Senescence parameters of relative fresh weight,?ower abscission, ?ower opening, ?ower discolouration and ?ower wilting were all suppressed by BA dips.Dip treatment with BA (1 mM) was effective on G. 'Sylvia' in?orescences at three different maturity stages.
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