Effects of reflective film on the coloration and quality of Kyoho Grape
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摘要:
目的 研究避雨栽培条件下葡萄园地面覆盖反光膜(银白色镀铝塑料膜)对巨峰葡萄果实色泽及品质的综合影响。 方法 在福建省建瓯市小松镇,以3年生避雨栽培巨峰葡萄为试材,于果实转色初期行间地面覆盖反光膜,比较覆膜对果实成熟过程中果穗上下部果粒着色、花色苷含量、果粒纵横经、果形指数、可溶性固形物含量、糖组分及总酸含量等的影响。 结果 地面覆盖反光膜有利于巨峰葡萄提早转色,促进果穗上下部着色一致,果皮花色苷含量显著提高;覆膜后果穗不同部位的果粒硬度值提升67.30%以上,单粒质量提升26.79%以上;果粒呈椭圆形或长圆形,可以良好体现巨峰葡萄粒形性状;覆膜后巨峰葡萄的总糖和糖组分含量较对照有不同程度提升且果穗下部糖含量提升明显;处理较对照组可溶性固形物含量略有提升但显著不差异。 结论 避雨栽培巨峰葡果实成熟前30 d行间铺设反光膜可有效促进果穗下部果粒转色,果实着色均匀一致,果皮花色苷含量提升,果实品质稳定,可在生产中进一步推广应用。 Abstract:Objective The comprehensive effects of reflective film (silver-white aluminized plastic film) on the coloration and quality of Kyoho grape under rain-proof cultivation conditions were studied. Method In Xiaosong Town, Jian 'ou City, Fujian Province, three-year-old Kyoho grape cultivated in the rain shelter were used as experiment materials, and reflective film was covered on the ground between rows at the initial stage of fruit color change. The effects of plastic film covering on the coloring of upper and lower ears, anthocyanin content, fruit longitudinal and transverse longitude, fruit shape index, soluble solid content, sugar composition and total acid content during fruit ripening were compared. Results Covering with reflective film on the ground was beneficial to the early colour change of Kyoho grape, the consistent coloring of the upper and lower ears were promoted, and the anthocyanin content in the peel was significantly increased. After covering with reflective film, the hardness of different parts of ears increased by more than 67.30%, and the weight of single fruit increased by more than 26.79%. Fruit grains are oval or oblong, which can well reflect the inherent quality of Kyoho grape.Compared with the control group, the soluble solid content of the treatment were increased slightly but had no significant difference. Conclusion The coloring of the lower part of the ear can effectively promoted with laying reflective film between rows 30 days before ripening of Kyoho grape in rain shelter cultivation, the coloring of the fruit is uniform and the anthocyanin content in the peel was increased,fruit quality is stable, which can be popularized and applied in production. -
Key words:
- reflective film /
- Kyoho grape /
- fruit colour /
- quality
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图 1 反光膜覆盖对巨峰葡萄花色苷含量的影响
注:WT1:对照上部; T1:处理上部; WT2:对照下部 T2:处理下部。图2~4同。
Figure 1. Effects of reflective film on anthocyanin content of Kyoho grape(单位:mg·g−1)
Note:WT1:The upper part of control; T1:The upper part of treatment; WT2 : The lower part of control;T2 :The lower part of treatment . Same for figure2-4.
表 1 反光膜覆盖对巨峰葡萄花后98d果皮着色的影响
Table 1. Effects of reflective film on peel colour of ‘Kyoho’ grape (98 days after flowering)
处理 Treatment L a b C H a/b T1 28.75cB 4.27bB −1.21cC 4.96bB 345.13aA −3.53cC T2 28.89cB 4.75aA −1.33dD 6.37aA 338.49aA −3.57cC WT1 29.78Aa 3.40cC −1.15bB 3.67dD 331.52bB −2.96bB WT2 29.60bA 2.74dD −1.08aA 3.16cC 315.24cC −2.54aA 注:表格中横向第一行的数据L(黑白)、a(红绿)、b(黄蓝)、C(饱和值)、H(色调角)、a/b(综合色相)分别代表果实色差的不同指标值,表格内数据为巨峰葡萄最后一次采样的测定数据。同列数据后不同大小写字母分别表示不同处理间差异达极显著水平(P<0.01)和显著水平(P<0.05)。
Note: The data L(black and white), a(red and green), b(yellow and blue), c(saturation value), H(hue angle), a / b(comprehensive hue) in the first horizontal line of the table represent the different indicators of fruit colour difference respectively. The data in the table is the determination data of the last sample of Kyoho.Data with different uppercase and lowercase letters on same column indicate extremely significant differences (P<0.01) and significant level (P<0.05), respectivel表 2 反光膜覆盖对巨峰葡萄花后98d果粒质量等的影响
Table 2. Effects of reflective film on the fruit weight of Kyoho grape (98 days after flowering)
处理
Treatment果粒纵径
Longitudinal diameter/mm果粒横径
Cross diameter/mm果形指数
Fruit-type index果粒质量
Sing fruit weight /gT1 27.28bAB 25.15bB 1.085aA 10.30bAB T2 26.51bB 24.79bB 1.070bA 9.93bcB WT1 27.60aA 26.05aA 1.060bA 10.73aA WT2 26.67bAB 25.26bB 1.056bA 9.94cB 表 3 地面覆膜对巨峰葡萄花后98d果实糖酸含量的影响
Table 3. Effects of reflective film on the sugar and acid content of Kyoho grape(98 days after flowering)
处理
Treatment葡萄糖含量/mg·g-1
Glucose content果糖含量/mg·g-1
Fructose content蔗糖含量/mg·g-1
Sucrose content可溶性固形物/%
Soluble solids总酸/%
Total acid固酸比Solid-acid
ratioT1 72.49aA 51.63aA 1.79aA 19.37aAB 0.17bB 116.69aA T2 68.88abAB 49.37bcB 1.82aA 19.46aA 0.18aA 109.33bB WT1 68.09bBC 50.48abAB 1.69bB 18.77abAB 0.19aA 98.27cC WT2 65.47cC 48.69cB 1.55cC 17.33bB 0.18aA 95.22dD -
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