ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Leaf waxes and postharvest quality of Eucalyptus foliage.

Jones, M.; Sedgley, M.;

Journal of Horticultural Science Year: 1993 Vol: 68 Issue: 6 Pages: 939-946 Ref: 14 ref.

1993

บทคัดย่อ

Foliage characteristics and wax structure were examined in 9 eucalypt species (E. baueriana, E. brachyphylla, E. cinerea, E. crucis, E. gunnii, E. kruseana, E. socialis, E. tetragona and E. websteriana) in relation to consumer acceptance, production temperature and postharvest treatments. A consumer survey indicated that E. gunnii, E. cinerea, E. tetragona and E. kruseana were the most popular as cut foliage, with only E. baueriana considered unacceptable. Scanning electron microscopy (SEM) showed that all species had rod-shaped waxes, except for E. baueriana which had both rods and plates. There were significant differences between species in the length of the wax rods on mature leaves. There were no significant differences between production temperatures of 24/16 deg and 16/9 deg C on wax rod length of E. gunnii, E. kruseana, E. socialis and E. tetragona, but there were significant effects on plant height. Cut branches of E. brachyphylla and E. cinerea were stood in water or 5 or 20% sucrose. Wax regenerated on E. brachyphylla foliage standing in water but not on E. cinerea foliage, and sucrose treatments caused leaf necrosis in both species. It was concluded that cut eucalypt foliage should be handled carefully and kept in water.