บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Water relations in hot and cold fruit.

Jobling, J., Moradi, S. and Patterson, B.

Acta Horticulturae Year: 1998 Issue: No. 464 Pages: 59-63 Ref: 13 ref.

1998

บทคัดย่อ

Water relations in hot and cold fruit.

Mature rock melons (cv. Sweet Star) were harvested and held under a light source for 5 h, in order to assess how fruits maintain their turgor and hence spherical growth with the differential heating they receive in the field. The top half of each fruit warmed to approx. 37 deg C and the bottom half of each fruit remained at approx. 18 deg C (a temperature difference of approx. 19 deg C between heated and shaded sides). The fruits were allowed to cool overnight to 20 deg C and then sampled. No significant differences between sugar compositions of the heated and shaded sides of the fruits were detected. However, the inner mesocarp had a much higher sucrose level than the outer mesocarp, which, in contrast, had significantly higher glucose levels than the inner mesocarp, suggesting that melons ripen from the seed outwards. In several samples, no glucose was present in the inner mesocarp. Osmotic potential was similar in all tissues, indicating that the fruits did not respond to heating by osmotic a

djustment.