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Five different light filter bags including red, green, blue, white and double kraft bag were selected to study the effects of different color filter bags on the sunburn incidence and fruit quality of pomegranate. The sunburn index of pomegranate fruit decreased from 62.42% to 100%, comparing to non-bagged fruits. Principal component analysis showed that bagging mainly affected four quality indicators of pomegranate fruit, including titratable acid, soluble solids content, soluble sugar and seed hardness. The content of soluble sugar increased by 26.72% in the red bag, the seed hardness decreased by 35.58%, and the SSC and titratable acidity did not change significantly. The content of titratable acid, SSC and soluble sugar in the green bag fruit increased by 5.80%, 7.03%, 15.40% respectively, seed hardness decreased by 56.30%. The content of titratable acid, SSC and soluble sugar in the blue bag increased by 11.59%, 9.38%, 23.55%, and the seed hardness decreased by 16.26%. Titratable acid, SSC of fruits and seed hardness in the white bag decreased by 17.39%, 2.89% and 35.63%, respectively. The titratable acid and soluble solids of the fruits in the kraft bag increased by 8.70% and 11.17%, respectively, and the seed hardness decreased by 38.91%. The comprehensive analysis of the sunburn incidence and the internal and external quality of the fruit found that the red bag significantly improved the appearance quality of the fruit, reduced the fruit sunburn index by 91.80%, significantly increased the soluble sugar content, and reduced the seed hardness. Therefore, the red bag is an ideal fruit bag for Hongyushizi.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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