บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effects of postharvest desiccation on hydric status of cut roses.

Mokhtari, M.; Reid, M. S.;

Postharvest physiology, pathology and technologies for horticultural commodities: recent advances. Proceedings of an international symposium held at Agadir, Morocco, 16-21 January 1994. Year: 1995 Pages: 489-495 Ref: 22 ref.

1995

บทคัดย่อ

Effects of postharvest desiccation on hydric status of cut roses.

ABSTRACT :

 

Rehydration ability is a basis on which to select standard rose cultivars that are long, intermediate or short lived. Studies were conducted on 22 cultivars. Dehydration caused a linear decrease in rose water potential from about -1.8 bars at saturation to -13 bars at 10% weight loss. Postharvest water relations of both long- and short-lived rose cultivars were affected by initial dehydration. At 20 deg C and 60% RH, recovery from different dehydration levels down to 7.5% weight loss was quick and easy. A 10% weight loss was definitely a critical dehydration level for sensitive cultivars such as Cocktail and Marlyse but not for the resistant ones such as Royal Red and Sonia. Uptake/transpiration ratio decreased with increasing levels of dehydration for Marlyse, and only at 10% for Cocktail. For Royal Red and Sonia, this ratio increased consistently with increasing level of dehydration. Desiccation caused a reduction in water flow rate for Marlyse but not for the other cultivars.