褐变是苹果气调贮藏期发生的一种病害,主要发生在国光苹果上。褐变一般先出现在果肩部和果心线周围,然后逐渐扩大。褐变部分多呈不规则块状,有时也呈放射状。发病初期病部呈浅褐色,稍有异味,外观无异常表现;严重时病部果肉颜色加深,有较浓的酒精味,果皮发暗。 Browning is a type of disease that occurs during the tone-controlled storage of apple, mainly occurring in Guoguang Apple. Browning generally first appeared around the fruit shoulder and fruit centerline, and then gradually expanded. Browning part mostly irregular block, and sometimes radial. The early onset of the disease was light brown, slightly smelly, the appearance of no abnormalities; serious when the Ministry of color deepened flesh, a richer wine flavor, dark peel.