Breeding method for performing physical mutagenesis on coreopsis tinctoria

Abstract

The invention relates to a breeding method for performing physical mutagenesis on coreopsis tinctoria. The method is characterized by comprising the following steps: (1) imbibing coreopsis tinctoria seeds in water so as to obtain imbibed seeds; (2) performing plasma irradiation on the imbibed seeds so as to obtain irradiated seeds; (3) germinating and / or growing the irradiated seeds; (4) selectinga strain meeting the breeding objective according to characters shown by germination and / or growth of the seeds. The method disclosed by the invention has the advantages that diversified coreopsis tinctoria mutation types can be obtained; the operation is simple and convenient; the breeding method does not cause environmental pollution and is safe to the operator; the germination rate and / or germination potential of the coreopsis tinctoria seeds can be improved; growth of the leaves can be promoted, the crown breadth of plants is improved, and the quantity of the plant leaves is increased, sothat the leaves grow and / or widen, the leaf area is enlarged, the leaf stalks are lengthened, and the flower shape and / or flower color and the like can be changed.

Description

technical field [0001] The invention belongs to the field of plant mutation breeding, and in particular relates to a method for physical mutation breeding of Coreopsis bicolor. Background technique [0002] Two-color Coreopsis (Coreopsis tinctoria Nutt.) is Compositae (Comppositae) Coreopsis (Coreopsis L.) (Institute of Botany, Chinese Academy of Sciences. "Flora of China" Volume 75 [M]. Beijing: Science Press, 1979 :364.), also known as 'Kunlun snow chrysanthemum', is an annual herb that grows naturally in the alpine mountainous area above 3 200m above sea level in the north of the Karakorum Mountains. Rich in bioactive components such as flavonoids and polyphenols, it is a natural plant integrating health care, health care and medicinal materials. Coreopsis bicolor has the effects of clearing away heat and detoxification, promoting blood circulation and removing blood stasis, harmonizing the stomach and strengthening the spleen (Hu Zhengmei, Ma Qinghe. Kunlun Research pro...

AI Technical Summary

Problems solved by technology

However, no research related to breeding of Coreopsis bicolor, especially mutation breeding has been found so far

[0004] From a breeding point of view, the breeding of Coreopsis bicolor is more suitable for the environment in the plains, because the natural environment in the plains is not as harsh as on the plateau, but there are air and soil pollution in the plains, which may easily cause the seeds of Coreopsis bicolor Poor quality (such as weak germination potential or low germination rate, or incompatible germination potential and germination rate), poor appearance (such as small plant crown, few leaves, short leaves, narrow leaves, small leaf area or short petioles) , reduced medicinal value (e.g. low content of useful active ingredients), etc.

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