บทคัดย่องานวิจัย

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The effect of sucrose on the flower bud opening of 'Madelon' cut roses.

Kuiper, D.; Ribot, S.; Reenen, H. S. van; Marissen, N.;

Scientia Horticulturae Year: 1995 Vol: 60 Issue: 3-4 Pages: 325-336 Ref: 32 ref.

1995

บทคัดย่อ

Sensitivity of yield and fruit quality of French prune to water deprivation at different fruit growth stages.

 

Complete flower bud opening is characterized by an increase in the petal area, and by enhanced petal dry and fresh weights. The import of DM into the petals is used for osmotic, biosynthetic and respiratory demands. However, flowers of Madelon cut roses frequently fail to open completely under postharvest conditions. An aqueous solution containing 45 mM sucrose induced proper flower bud opening, even when the cut roses had been exposed intially to a sucrose-free solution for 48 h. This points to a requirement for a supply of organic matter from source tissue to the flower as main sink. This conclusion is confirmed by the observation that complete flower bud opening can also be achieved without any addition of sucrose by reducing the number of participating petals. Replacing two-thirds of the 45 mM sucrose by an isomolal amount of KNO3 did not affect the flower opening process, implying that a considerable amount of the added sucrose is claimed for osmoregulation. The role of added sucrose and th

e contribution of the endogenous storage pool in the process of flower bud opening is discussed.