不同采收期对南果梨常温货架贮藏品质的影响

本实验采用盛花标记法研究不同采收期对南果梨常温货架品质的影响。结果表明：随着采收期增加，果实单果重、种子转色指数、可溶性固形物含量、丙二醛含量、可溶性果胶含量增加，果实硬度、可滴定酸含量、原果胶含量、淀粉含量降低；常温货架期间，盛花后140d 果实呼吸强度、腐烂率和果胶酶、淀粉酶活性均小于其它两个采收期，盛花后140d 为南果梨较适宜采收期。

Effects of Different Harvest Periods on Shelf-life Quality of Nanguo Pear during Ambient Storage

The method of florescence sign was adopted to research the effect of different harvest period on shelf-life quality of Nanguo pear during ambient storage. The results showed that with harvest period extending, the single fruit weight, the index of seed change color, soluble solids content, malondialdehyde (MDA) content, and soluble pectin content rise. But the firmness, titratable acidity content, protopectin content and starch content decline. During ambient storage, the respiratory rate, disease incidence and pecticase, amylase activity, and the growth in fruit on 140th day after florescence are lower, compared with two other harvest periods. The 140th day after florescence is the optimal harvest period.