Method for rapid breaking of Pyrus betulifolia Bunge seed dormancy and promotion of germination

Abstract

The invention relates to a method for rapid breaking of Pyrus betulifolia Bunge seed dormancy and promotion of germination. The method comprises the steps of: (1) seed collection and cleaning: collecting the fruits of trees that have unadulterated seed tree variety, grow robustly and are free of diseases and pests; (2) seed soaking in warm water: conducting warm ironing treatment; (3) short-term storage in sand: selecting washed fine sand, watering the sand thoroughly, mixing the seeds and the sand uniformly in a volume ratio of 1:2-3, loading the mixture into a woven bag, then putting the bag into a 0-5DEG C refrigerator or cold storage for 10 days; and (4) germination acceleration technique: taking out the Pyrus betulifolia Bunge seeds, washing the fine sand, at the same time soaking the seeds wet, flatly spreading the clean seeds on cotton cloth evenly to a thickness of not more than 2cm, covering the seeds with cotton cloth, spraying water to the cotton cloth appropriately, maintaining a room temperature, and 2-3 days later when 93% of the seeds start germination, conducting sowing.

Description

technical field [0001] The invention relates to a method for quickly relieving dormancy of pear pear seeds by soaking seeds in warm water combined with short-term low-temperature sand storage, and seed germination technology, and belongs to the technical field of plant production. Background technique [0002] There are three types of existing methods for processing Du pear seeds: one is to adopt the stratification method to remove the dormancy of Du pear seeds. Seeds are mixed with wet sand or other moist matter or layered and stored under low temperature, humidity, and ventilation conditions for about 60 days to release dormancy before sowing can germinate. Often during the sand storage period, the seeds are often not properly grasped for water, ventilation conditions or stratification time, which can easily affect the normal release of dormancy of the seeds, resulting in the failure of the seeds to germinate or the low germination rate after sowing, and even cause the see...

AI Technical Summary

Problems solved by technology

Often during the sand storage period, due to poor control of water, ventilation conditions or stratification time, it is easy to affect the normal release of dormancy of the seeds, resulting in the inability of the seeds to germinate or the low germination rate after sowing, and even cause the seeds to rot.

The stratification process takes a long time, and the temperature and humidity vary greatly in different regions, and the stratification environment is not easy to grasp

During the sand storage period, the seeds are often not well grasped for moisture, ventilation conditions or stratification time, which can easily affect the normal release of dormancy of the seeds, resulting in the failure of germination or low germination rate after sowing, or even mildew.

For example, in 2014, if this treatment method was adopted for large-scale seedling cultivation, more than 90% of the seedlings failed, and the emergence rate was less than 10%.

[0003] The second category is to use chemical agents to quickly release the dormancy of Du pear seeds, such as hydroxylamine chloride, sodium nitroprusside, isothioguanidine, H 2 SO 4 , NaOH, kNO 3 \H 2 o 2 Soaking seeds, but before soaking, they are often soaked in 0.1% mercuric solution for disinfection, and then treated with chemicals, which is not safe in production and requires suitable temperature and light conditions

And the concentration of hormones is very low, it can be used in scientific research, but it is difficult to master in production and promotion