Histological and physiological characterization of rind breakdown of 'Navelate' sweet orange

被引:59
作者
Agustí, M
Almela, V
Juan, M
Alferez, F
Tadeo, FR
Zacarías, L
机构
[1] Univ Politecn Valencia, Dept Prod Vegetal, Valencia 46022, Spain
[2] CSIC, Inst Agroquim & Tecnol Alimentos, Valencia 46100, Spain
[3] Inst Valenciano Invest Agr, Dept Citricultura & Otros Frutales, Valencia 46113, Spain
关键词
citrus; physiological disorder; cell collapse; rind blemish; fruit quality;
D O I
10.1006/anbo.2001.1482
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Rind breakdown of 'Navelate' sweet orange is characterized by sunken colourless areas of the peel which develop into reddish-brown, dry areas partially covering the exposed portion of the mature fruit. Sudden changes in relative humidity at fruit colour break seem to be responsible for the natural development of this disorder, which begins at the transitional zone of the flavedo-albedo and advances across the flavedo reaching the epidermis. Affected cells have reduced amounts of cytoplasm located in a central position and have twisted and squashed walls, forming areas of collapsed cells amongst the healthy cells of the flavedo and albedo. Comparisons of healthy and damaged areas of affected fruits showed no significant differences in wax morphology and cuticular thickness or permeability. Our results suggest that an excessive loss of water from hypodermal and albedo cells is responsible for the disorder. (C) 2001 Annals of Botany Company.
引用
收藏
页码:415 / 422
页数:8
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