Wound repair processes in fruit of theCucurbita maximahybrid ‘Delica’ and the role of scar tissue in the development of fungal rots on stored fruit
作者:
B. T. Hawthorne,
P. W. Sutherland,
期刊:
New Zealand Journal of Crop and Horticultural Science
(Taylor Available online 1992)
卷期:
Volume 19,
issue 1
页码: 53-60
ISSN:0114-0671
年代: 1992
DOI:10.1080/01140671.1991.10418106
出版商: Taylor & Francis Group
关键词: Cucurbita maxima;wound repair;wound periderm;fungal rots;Buttercup squash ‘Delica’;fruit anatomy
数据来源: Taylor
摘要:
Wound repair by fruits of theCucurbita maximahybrid ‘Delica’ involved the rapid sealing of the wound by a phloem exudate, which hardened on contact with air, and the development of a wound periderm and callus tissue beneath the layer of hardened exudate. Fruits which had stopped expanding at the time of wounding produced callus tissue in sufficient quantity to eventually rupture the wound periderm and expose the underlying tissue to colonisation by fungi. In rapidly expanding, young, fruits the growth of callus was relatively slight, the wound periderm remained intact, and the amount of scar tissue over the wound was much less than that which grew over wounds in older fruits. The scar tissue produced by the wound repair process, particularly in older fruit, increased the potential for subsequent invasion by fungal pathogens since rots occurred much more often at the edges of scar tissue than elsewhere on the fruit surface.
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