บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effects of temperature, 8-hydroxyquinoline sulphate and sucrose on the vase life of cut rose flowers

Kazuo Ichimura, Kohei Kojima and Rie Goto

Postharvest Biology and Technology Vol: 15 Issue: 1 Pages: 33-40

1999

บทคัดย่อ

Effects of temperature, 8-hydroxyquinoline sulphate and sucrose on the vase life of cut rose flowers

Cut roses (Rosa hybrida L.) cv. Sonia were continuously treated with water (control), 200 mg l-1 8-hydroxyquinoline sulphate (HQS) or 30 g l-1 sucrose plus 200 mg l-1 HQS (Suc+HQS) at 20, 25 and 30°C. Higher temperatures promoted flower opening and shortened vase life. HQS and Suc+HQS both extended the vase life at all temperatures, but Suc+HQS was the more effective treatment. Flower diameter and fresh weight were markedly increased by Suc+HQS, particularly at 20°C. Hydraulic conductance of stem segments from the control treatment decreased rapidly after harvest, but those for HQS and Suc+HQS treatments were maintained near their initial level. Concentrations of glucose, fructose and sucrose in petals were increased by the Suc+HQS treatment, compared with the control or HQS treatment. Correlations between sugar concentrations in petals and maximum flower diameter or vase life were positive. These results show that soluble carbohydrate concentration in petals is an important factor in determining the vase life of cut rose flowers at all temperatures examined and when hydraulic conductance is not reduced.