金冠苹果的果锈一直是鲜食苹果生产者所关心的一个疑难问题。关于这方面的研究,有的着重谈果锈问题的重要性;有的报告认为环境条件或栽培条件是锈发果皮细胞过早分裂而产生果锈的主要原因。还有些认为,非繁殖性病原学所引起的果锈是与果实表面一定时期的水份有关。以往也曾注意到对果树防雨可以减少锈果比例;用套纸袋的方法保护果实能减轻果锈为害程度。很多人观察到,果锈很明显地 Golden Delicious apple fruit rust has always been a concern for fresh produce apple producers. Some studies focused on the importance of fruit rust. Some reports suggest that the environmental conditions or the cultivation conditions are the main causes of the fruit rust caused by the premature division of the rust-derived pericarp cells. Still others believe that the rust caused by non-reproductive etiology is related to the moisture on the surface of the fruit over a period of time. In the past, it has also been noticed that the rainproofing of fruit trees can reduce the proportion of rusty fruit; the method of protecting the fruits with the paper bag can reduce the degree of rusting. Many people observe that rust is obvious