Studies on the surface depression of melon fruit during storage: it's physiological mechanism and prevention technique

对3个网纹甜瓜品种果实发育过程中角质膜蒸腾速率和裂隙蒸腾速率进行了测定。赤道地区的裂隙首先垂直发展，然后随着果实的发育，裂隙由水平发展的裂隙相互连接，但即使在果实成熟阶段，仍有一些不完整的缝合线等裂隙沿网存在，无论品种如何。‘Life’的木质化和胶质化细胞壁层均比其他品种薄，可能是由于果实发育周期较短所致。不同品种在果实成熟期的净蒸腾速率差异不显著。结果表明，在网纹甜瓜果实成熟期，如果网纹瓜果网状细胞壁层在网纹缝隙底部以下发育，则网纹甜瓜果网的防水能力与角质化膜一样高。

Transpiration rate of cuticular membrane and fissure (net) in the fruits of three netted melon cultivars were separately measured during the fruit development. Fissures in the equatorial region developed vertically at first and then they were interconnected by horizontally developed fissures as the fruit developed but some cracks like incomplete suture line still remained along the net even at the fruit ripening stage, irrespective of cultivar. Both lignified and suberized cell wall layers in the nets of ‘Life' were thinner than those of the other cultivars probably because of shorter developmental period of the fruit. Nevertheless, net transpiration rate did not differ significantly among cultivars at the fruit ripening stage. Our results indicated that water proofing ability in the net of netted melon fruit is as enough high as that of cutinized membrane if the suberized cell wall layers with wax depositions develop below the bottom level of fissure in the net at the fruit ripening stage.