ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Water loss and quality loss during post-harvest storage of asparagus and broccoli: a magnetic resonance imaging study.

Heyes, J. A., Bucknell, T.T. and Clark, C. J.

ISHS Acta Horticulturae 553: 491-494.

2001

บทคัดย่อ

Magnetic resonance was used to investigate the links between water and quality loss in asparagus (Asparagus officinalis cv. Jersey Giant) and broccoli cv. Marathon. Water loss at 20 deg C was monitored by repeated weighing after coating of various plant parts with petroleum jelly or after feeding of abscisic acid (ABA; 0-5 mM) to the cut end for 24 h. During the first 24 h after harvest, 35% of the water loss from 18 cm asparagus spears occurred from the tip 30 mm, 40% came from the cut end, and the remainder from the rest of the spear surface. Broccoli heads lost 75% of their water through the florets, and only 5% through the cut end. Water loss through asparagus tips and broccoli florets was reduced by application of petroleum jelly. ABA treatments (1-5 mM for 24 h) reduced water loss from asparagus and reduced loss of visual of visual quality after 3 days. ABA application at 2 mM for 24 h reduced water loss from broccoli branchlets during the next 8 h and reduced yellowing after 3 days. Anatomical studies showed that stomata were the most frequent on asparagus bracts and broccoli sepals. Magnetic resonance imaging allowed excellent resolution of anatomical and internal structures, including vascular tissues.