Leymus chinensis seeds palea removing and temperature changing combination germinating method

Abstract

The invention is a chinensis germination method of combined seed peeling and temperature changing, which belongs to the planting technique field. The invention mainly comprises two parts of: partially or wholly removing the hull of chinensis seed by means of hull peeling so as to break the hard physical structure of the hull and releasing the chinensis seed dormancy aiming to destroy the hard phyical structure of the hull and break the chinensis seed dormancy; as well as rapidly increasing the seed germination rate of chinensis by using the variable temperature technique. The invention concretely has four processes of 1) seed selection and impurity removal, 2) hull-peeling treatment, 3) seed disinfection and 4) variable temperature germination. The invention has the increased seed germination rate from 54.0 percent to over 95.0 percent compared with the seed with hull. 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, in particular to 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 (Leymus chinensis) is a perennial rhizome plant of the genus Lymus in the family Poaceae, and is a high-quality forage grass. This pasture is mainly distributed in the eastern part of the Eurasian prairie, including Russia's Transbaikal Lake, the eastern and northern parts of Mongolia, the Northeast Songnen Plain, the North China Plain and the Inner Mongolia Plateau in China. Leymus chinensis has high economic value and ecological value, and is rich in high-quality protein, minerals and sugar. It grows fast and tolerates drought, salinity and poor soil. However, due to overgrazing and land rec...

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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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