Abstract:

The aim is to study the effect of different treatments of sodium dihydrogen phosphate on the vigor of sugar beet seeds, so as to screen a new sugar beet seed coating material. The 'TD801' sugar beet seeds were selected as the experimental materials, and treated with sodium dihydrogen phosphate at concentrations of 10, 15, and 20 mmol/L for soaking durations of 8, 16, and 24 hours, respectively. The untreated dry seeds served as the control group (CK). By measuring germination indices, the effect of sodium dihydrogen phosphate on the vigor of sugar beet seeds was investigated. The results showed that sodium dihydrogen phosphate at all three concentrations (10, 15, and 20 mmol/L) significantly promoted the germination of 'TD801' sugar beet seeds when treated for 8, 16, and 24 hours. Compared to the untreated control (CK), the germination potential and germination rate of the treated seeds were increased by 6.67%-16.67% and 5.66%-15.66%, respectively. The germination index and vigor index were increased by 5.25%-98.05% and 7.9%-101.29%, respectively. Additionally, the electrical conductivity of the treated seeds was lower than that of the CK by 28.30% to 66.40%. At a concentration of 10 mmol/L for 24 hours, the effect on germination potential and germination rate was more pronounced. When the concentration was 15 mmol/L for 24 hours, the impact on the germination index and vigor index was better. A concentration of 10 mmol/L for 24 hours also showed a more significant effect on reducing the relative electrical conductivity. Sodium dihydrogen phosphate was found to promote the germination of sugar beet seeds, with the optimal treatment being a concentration of 10 mmol/L or 15 mmol/L, and a soaking duration of 24 hours.

Key words: beet seeds, sodium dihydrogen phosphate, seed initiation, conductivity, differential analysis, germination index, vitality impact