Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (9): 1794-1804.doi: 10.16420/j.issn.0513-353x.2020-0835

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Influence of Different Light Quality Formed by Colored Rainproof-films on Bayberry Fruit Quality During Ripening

Qi Xingjiang*(), ZHENG Xiliang, LI Xiaobai, ZHANG Shuwen, REN Haiying, YU Zheping   

  1. Institute of Horticulture,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China
  • Received:2021-02-09 Revised:2021-08-11 Online:2021-09-25 Published:2021-09-30
  • Contact: Qi Xingjiang


The cultivation of bayberry under rain shelter decrease the harm of rain,besides different light quality of colored rainproof-film have a great influence on the fruit development and quality formation. In this study,five kinds of colored rain-proof films(red,yellow,green,purple,and white)were used to conduct rain-sheltered cultivation before the rainy season approached,and four fruit quality indexes(soluble sugar,titratable acid,total phenol,anthocyanin and ratio of sugar/acid)were monitored during the fruit maturing stages(i.e. white stage,veraison stage,middle maturity stage and late maturity stage). The results showed that there were obvious differences in light transmittance and light quality composition among the five kinds of colored rainproof-films. For example,the light transmittance of the yellow and red films decreased by 66.21% and 20.02% of the control respectively,but under the yellow film the ratio of red/blue light increased by four times of the control,and the ratio of red/infrared light was close to that of the control. Under the red film the red/blue light ratio increased by 20 times of the control,and the red/infrared ratio was close to that of the control. The transmittance of the green film was 46.8%,and the ratios of red/blue and red/infrared light were 72% and 60% of the control,respectively. The transmittance of purple film was the lowest,only 7.74% of the control,and the ratio of red/infrared light was the lowest and decreased by 40% of the control. In the ripening process,the influence of the rainproof-film on the fruit was mainly reflected in the veraison,which delayed fruit ripening process. The purple and green film delayed the fruit maturation most obviously(veraison was delayed by about 2 d),while the yellow and red ones did not. Compared with the control,the contents of soluble sugar and anthocyanin of fruit in late maturity stage of the yellow film increased by 12.05% and 12.21%,respectively,and fruit quality of the red film was close. In contrast,the soluble sugar content of fruit in late maturity stage of purple film decreased by 11.14% compared with the control. This is probably due to the difference in the light transmittance and light quality.

Key words: bayberry, colord film, light quality, rain-sheltered cultivation, fruit quality

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