|Table of Contents|

Comparison of Anatomic Structure and Enzyme Activity of Fruit Rinds in Crack-resistant and Crack-prone Watermelons(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年20
Page:
92-96
Research Field:
Publishing date:

Info

Title:
Comparison of Anatomic Structure and Enzyme Activity of Fruit Rinds in Crack-resistant and Crack-prone Watermelons
Author(s):
GAO Meiling1; YU Changbao1; WEI Xiaoming2; LI Jiayi1; LIU Yan1
（1.College of Life Science，Agriculture and Forestry，Qiqihar University，Qiqihar，Heilongjiang 161006；2.Qiqihar Vegetable Research Institute，Qiqihar，Heilongjiang 161006)
Keywords:
mini-watermelon（Citrullus lanatus）; cracking; anatomic structure; enzyme activity
PACS:
-
DOI:
10.11937/bfyy.201620024
Abstract:
Taking crack-resistant ‘K2’ and crack-susceptible ‘L1’ as tested materials，fruit pericarp anatomic structure and enzyme activity in fruit cracking-resistant and cracking-prone mini-watermelons were compared.The fruit pericarps were sampled after self-pollination for 21，24，27，30 days and were observed by paraffin section.The results showed that the stone-cells in the crack-resistant accession were smaller and rounder than those in the crack-susceptible accession.An obvious transition from the small cells to the big cells was observed in the crack-resistant.Variation in the degree of pericarp structure of the crack-resistant was more obvious than of the crack-susceptible late in fruit development.Fruit-cracking resistance was associated with the variation and arrangement of pericarp structure in the process of mini-watermelon maturity.At the same time，the fruit pericarps that were sampled after self-pollination after 30 days were observed for enzyme activity.Pectinase activity，cellulose-enzyme activity and activity of peroxidase (POD) in the thin pericarp，crack-susceptible line were higher than those in the thick pericarp crack-resistant line.Cracking tendency and pectinase activity in the pericarp were significantly positively correlated.Pericarp thickness and pectinase activity in the pericarp were significantly negatively correlated.In the pericarp，POD activity and SOD activity were significantly negatively correlated.

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Last Update: 2016-11-22