Method for improving germination percentage of Cyclocarya paliurus seeds

Abstract

The invention discloses a cyclocarya paliurus breeding and germinating method and belongs to the field of tree reproduction. The cyclocarya paliurus breeding and germinating method is characterized by comprising the following steps: (1) carrying out alkalization seed immersing treatment; (2) carrying out vibration and decompression nitrogen-enriching treatment; and (3) carrying out germination accelerating treatment. Compared with the prior art, the method disclosed by the invention can promote the germination of cyclocarya paliurus seeds to obtain the relatively high germination rate; and under a relatively low temperature environment, the relatively high survival rate of seedlings can be obtained.

Description

technical field [0001] The invention relates to a method for promoting germination of seeds, in particular to a method for promoting germination of Cyclocarya paliurus seeds suitable for planting and cultivating in Shandong area. Background technique [0002] Cyclocarya paliurus Iljin. is a unique single-species arbor plant in my country. It is one of the endangered plants under national key protection and belongs to the third category of protected plants. Cyclocarya paliurus is widely used, and it is a precious tree species with great prospects for development and utilization. Studies have found that Cyclocarya paliurus leaves not only contain essential elements such as potassium, calcium, magnesium, and phosphorus, but also contain trace elements that play an important role in human health, such as manganese, iron, copper, zinc, selenium, chromium, and alum. , germanium, etc.; Cyclocarioside I (cyclocarioside I) extracted from the leaves of Cyclocarya paliurus is one of t...

AI Technical Summary

Problems solved by technology

However, the above scheme still has the following defects: ① GA 3 (Gibberellin) is the most widely used plant growth regulator in agriculture, forestry and horticulture in my country. It is mainly used to promote the growth and development of crops, mature early, increase yield and break the dormancy of seeds, tubers, bulbs and other organs. , but the main function of gibberellin is to promote cell elongation, thereby causing stem elongation and plant height, when using GA 3 If there are unfavorable climatic conditions such as drought, due to GA 3 The overgrowth brought about will aggravate the injury of the seedlings and cause the death of the seedlings. The above reasons limit the application of Cyclocarya paliurus seeds, and are only limited to the field of laboratory research; Problems such as difficulty in effectively and substantially improving the genetics, breeding, and production of Cyclocarya paliurus are limited; ③ Cyclocarya paliurus is mainly distributed in Anhui, Jiangsu, Zhejiang, Jiangxi, Fujian and other places, and there is no growth in Shandong, and the reason is mostly due to Germination and seedling stages, seed germination and early seedling growth are sensitive periods to adversity, with low resistance

However, if the temperature of germination and seedling growth is accommodated and the sowing is postponed until mid-April when the temperature is suitable, the height of the seedlings has not reached 10cm, and it has entered summer at this time, with high temperature and hot weather, accompanied by summer drought, low air humidity, and groundwater. The position is high and the soil drainage performance is poor, which will easily cause the seedlings to fail to survive the summer and lead to death. Even if the seedlings are treated with shade, the seedlings will survive safely, but the growth will be slow or even stagnant