Leymus chinensis high-temperature seed presoaking and temperature changing combination germinating method

Abstract

The invention is a chinensis germination method of combined high temperature seed soaking and temperature changing, which belongs to the planting technique field. The invention mainly comprises two parts of partially releasing the chinensis seed dormancy by utilizing the seed soaking method in the seed pretreatment technique and rapidly increasing the seed germination rate of chinensis by applying the variable temperature technique. The invention concretely has four processes of 1) seed selection and impurity removal, 2) high temperature seed soaking, 3) seed disinfection and 4) variable temperature germination. The invention can increase the chinensis germination rate from 56.7 percent to above 84.0 percent compared with the chinensis seed treatment by a single method. Therefore, the invention has significant practical meaning and broad application value to both the chinensis seed cultivation and experimental study.

Description

Technical field [0001] The invention belongs to the technical field of plant planting, and relates to a germination method for releasing dormancy of plant seeds, specifically a combined method for quickly breaking the severe dormancy of Leymus chinensis seeds and significantly improving the germination rate of Leymus chinensis seeds. Background technique [0002] Leymus chinensis is a perennial rhizome of the genus Leymus, a kind of high-quality forage grass. This forage is mainly distributed in the eastern part of the Eurasian steppe, including Russia's Transbaikal, eastern and northern Mongolia, the Songnen Plain, the North China Plain and the Inner Mongolia Plateau in Northeast China. Leymus chinensis has high economic and ecological value, and is rich in high-quality protein, minerals and sugars. Its growth rate is fast, and it is resistant to drought, salt-alkali and poor soil. However, in recent years, due to overgrazing and land reclamation, the original large amount of hi...

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Problems solved by technology

2) Chemical methods include rare earth seed soaking treatment, exogenous hormone treatment, etc., but the effects are not ideal (Ma Hongyuan, Liang Zhengwei, Chen Yuan, Research progress on methods for improving the germination rate of Leymus chinensis seeds

[0005] The common shortcomings of these methods in the past are: 1) lack of a unified standard germination method, the comparability between data is poor

2) Although the fact that variable temperature germination is better than constant temperature germination has been found, an ideal combination of variable temperature range and method has not been found

3) There is no seed pretreatment (removal of impurities + soaking, etc.) technology that simply breaks the dormancy of Leymus chinensis seeds

4) It mainly adopts a single treatment method, and does not organically combine seed pretreatment technology and variable temperature to create a new germination method and technology

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