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

分别测定了3个网纹甜瓜品种果实发育过程中表皮膜和裂隙（网）的蒸腾速率。赤道地区的裂隙首先是垂直发展的，然后随着果实的发育，它们通过水平发展的裂隙相互连接，但即使在果实成熟阶段，无论品种如何，仍然沿网保留一些裂隙，如不完整的缝合线。 “生命”网中的木质化和木木化细胞壁层都比其他品种的细胞壁薄，这可能是由于果实发育周期较短的缘故。然而，在果实成熟阶段，不同品种的净蒸腾速率没有显着差异。我们的研究结果表明，在果实成熟阶段，如果有蜡沉积的木木化细胞壁层发育到网裂的底部水平以下，则网状瓜果网的防水能力与角质膜的防水能力一样高。

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.