Study of Potassium Nitrate

Formula Weight

101.1032

Density

1.00g/mLat 20°C

The Effect of

Potassium Nitrate on Leaves

Previous research has focused on the germination rate and potential of Ginkgo biloba seeds, while relatively little attention has been paid to the growth status of seedlings after germination.

Therefore, this study used Ginkgo biloba seeds as the test material and studied the effects of three chemical reagents, calcium chloride, potassium nitrate, and gibberellin, on the germination characteristics and growth of Ginkgo biloba seeds Exploring Yuan in order to find more suitable chemical reagents and concentrations for Ginkgo biloba seed soaking, providing a certain scientific basis and reference for Ginkgo biloba seed propagation.

The experiment was sown on September 15, 2018, and November 11, 2019 was the final stage of germination. The seeds were deemed to have sprouted when the radicle penetrated through the seed coat by about 3mm. The number of sprouted seeds was counted regularly every day, and their germination rate and germination potential were calculated.

Germination potential%=(number of germinated seeds in the early stage of germination (within the specified date)/number of test seeds) x 100%. Germination rate%=(number of germinated seeds at the end of germination period (within the specified date)/number of test seeds) x 100%

In the study of potassium nitrate for the germination rate of Ginkgo biloba seeds, the results showed that after soaking with 0.2–0.8 M potassium nitrate, there was a significant increase. At a concentration of 0.8 M potassium nitrate, the germination rate reached its maximum, reaching 62.5%, which was 19.2% higher than the control. When the potassium nitrate concentration was 1.6 M, the germination rate of the seeds decreased to 27.5%, which was 15.8% lower than the control.

Compared with the control CK, there was no significant difference in the effect of 0.2~0.8 M potassium nitrate soaking treatment on germination potential, but the germination potential of 1.6 M potassium nitrate soaking treatment was significantly reduced.

At last, the study of potassium nitrate showed that a low concentration range of potassium nitrate soaking can promote the germination of Ginkgo biloba seeds, while a high concentration of potassium nitrate soaking can inhibit the germination of Ginkgo biloba seeds. Applying potassium nitrate at the proper rate is a good way for plants.