果树学报2009，Vol.26Issue(5)：678-682,插2,6.
枇杷果实锈斑病的发生原因及其控制
Causes of occurrence and prevention of russet on loquat fruit
摘要
Abstract
Three loquat cultivars, Zaozhong No.6, Changhong No.3 and Jiefangzhong were used as materials to study the occurrence and possible causes of fruit russeting so as to prevent this physiological disorder. Different loquat cultivars displayed different susceptibility to russeting. Zaozhong No.6 showed the highest incidence of russet, followed in order by Jiefangzhong and Changhong No. 3. Russet susceptibility was found to have a close relationship with the structure of the cuticle layer of fruit skin. Under florescent microscope, Changhong No. 3 had the thickest cuticle and cell walls with strongest and uniform auto-fluorescence, while Zaozhong No.6 had the thinnest cuticle and the weakest cell wall auto-fluorescence. Russeting might be derived from micro-wounds formed on the skin under some adverse conditions. The micro-wounds lancinated with the expansion of the fruit pulp, and at the same time, some of the cells beneath the epidermis resumed cell division and phellogen developed. The outgrowth of suberized cells broke through the epidermis and formed the visible russet spots. Artificial removal of the skin hairs created such micro-wounds and induced severe russeting in cuhivar Jiefangzhong. Fruit bagging significantly reduced russet incidence and the effect was better if bagging was conducted earlier.关键词
枇杷/果实/锈斑病/显微结构/套袋Key words
Loquat (Eriobotryajaponica Lindl.) / Fruit skin / Russeting/ Tissue structure/ Bagging分类
农业科技引用本文复制引用
王荔,胡又厘,黄旭明,王惠聪..枇杷果实锈斑病的发生原因及其控制[J].果树学报,2009,26(5):678-682,插2,6.基金项目
广东省攻关项目(2004B20901001) （2004B20901001）
