Abstract:

To assess the impact of varying erythritol levels on seed germination and to provide a foundation for selecting sugar beet seed coating, the seeds of sugar beet 'TD801' were used as the test material in this study. The three concentration gradients (5, 7.5, 10 mmol/L) and three hour time gradients (8, 16, and 24 h) were set up, and then 9 treatments were used to determined the indexes. The germination potential was increased by 4%-12.33% in comparison to the control CK; the rate of germination was raised by 9%-12% compared to the control CK; and the germination index was also augmented by 28.92%- 60.74% compared with the control CK; the vitality index was increased by 69.45%-116.81% compared with the control CK; and the relative electrical conductivity was decreased by 58.26%-83.10% compared with the control CK. When the concentration was 5 mmol/L for 8 h, it had a better effect on improving germination potential; when the concentration was 5 mmol/L for 24 h, the effect of germination rate was better; when the concentration was 5 mmol/L for 16 h, it had a better effect on germination index and vitality index; when the concentration was 10 mmol/L for 24 h, it had a better effect on the relative electrical conductivity. The 9 treatments had the effect of promoting the initiation of sugar beet seeds, and a greater overall effect on seed germination of sugar beet was observed when the concentration of erythritol solution was 5 mmol/L for 16 hours.

Key words: sugar beet, seed, erythritol, seed germination, seed coating agent