Abstract:
In order to promote the artificial cultivation of Saussurea neoserrata Nakai, the effects of different temperature, light, gibberellin, pH and other factors on seed germination were studied in this experiment.The results showed that the embryo body was highly developed when the seed separated from the parent.And the seeds were smaller, with a length of 4.60 mm, a width of 1.28 mm, and a weight of only about 1.61 g.The seeds of the S.neoserrata needed light to germinate, and its most suitable germination rate was 25 ℃,which too high or too low would hinder its seed germination.The seeds of S.neoserrata had dormancy characteristics.The germination rate of its seeds treated with a certain concentration of Gibberellin was improved and the seeds treated with 150 mg·L
-1 gibberellin solution had the highest indicators, which could reach more than 50%.The acid-base adaptability of the S.neoserrata seeds was wider, and the tolerance to the alkaline environment was stronger.Therefore, the seeds of S.neoserrata are light sensitive seeds with good resistance to acid and alkali stress, and 100-200 mg·L
-1 gibberellin can be used to improve their germination vigor.