Table 1.
Actual light intensity corresponding to relative light intensity.
Fig 1.
Blueberry fruits at different development stages under different light intensities.
Note: CK: 100% light intensity, 75%: 75% light intensity, 50%: 50% light intensity, 25%: 25% light intensity; S1: white fruit stage, S2: purple fruit stage, S3: blue fruit stage.
Fig 2.
Effect of light intensity on endogenous hormones content in blueberry fruits.
Note: In the figure, different uppercase letters indicate significant differences in the same light intensity during different stages, and different lowercase letters indicate significant differences in different light intensity treatments during the same stage (P < 0.05). Bars show standard deviation.
Fig 3.
Effect of light intensity on associated enzyme activities in the anthocyanin biosynthesis pathway of blueberry fruits.
Note: In the figure, different uppercase letters indicate significant differences in the same light intensity during different stages, and different lowercase letters indicate significant differences in different light intensity treatments during the same stage (P < 0.05). Bars show standard deviation.
Fig 4.
Effect of light intensity on anthocyanin content in blueberry fruits.
Note: In the figure, different uppercase letters indicate significant differences in the same light intensity during different stages, and different lowercase letters indicate significant differences in different light intensity treatments during the same stage (P < 0.05). Bars show standard deviation.
Fig 5.
Correlation analysis of anthocyanin content with light intensity, endogenous hormones and enzyme activities in blueberry fruits at different developmental stages under light intensity treatment.
Note: AC: anthocyanin content, LI: light intensity; a: white fruit stage (S1), b: purple fruit stage (S2), c: blue fruit stage(S3); * indicates significant correlation at 0.05 level, ** indicates highly significant correlation at 0.01 level.