板栗贮藏期间几种生理生化指标的变化

板栗采收后，果皮作为保护种子的屏障首先迅速失水，贮藏一个月后种子失重加快。在贮藏期，板栗的生理活动分三个阶段：第一阶段从采后到１１月中旬，前期呼吸旺盛，淀粉水解酶活性较高，栗果损失较大；第二阶段从１１月中旬到１２月底，种子处于自然休眠状态。呼吸作用较弱，α－淀粉酶处于较低的活性水平，β－淀粉酶稳定在相对低的水平，栗果风味如初，腐烂率较低；进入贮藏后期，板栗种子休眠状态解除，呼吸旺盛，α－淀粉酶，β－淀粉酶活性增高，可溶性糖含量增多，栗果甜味明显增强，果实干缩，部分种子萌动或出现“石灰化”现象，可食性差。本文同时对板栗的贮藏与其生理生化变化的关系进行了讨论。

Physiological and Biochemical Changes in Storage of Chinese Chestnut

After chestnut harvest, first the pericarp losses water rapidly, a month later the seed losses weight rapidly. At chestnut storage period, the phsiological activity is divided into three stages: stage Ⅰ(from postharvest to the mid of November), with high respiration, high amylase activity, big loss of chestnut; stage Ⅱ(from the mid of November to the end Of December), with nature dormancy,low respiration, low amylase, the chestnut just as before in quality;stage Ⅲ(the end of the storage), with dormancy a wakening,high respiration, high amylase, high soluble suger content, increased taste of sweet,dryed chestnut,some seeds germination or calcification.