Application of artificial vernalization in yield breeding of wheat and method of application

Abstract

The invention discloses application of artificial vernalization to yield breeding of wheat and a method of the application. A wheat variety which has good comprehensive characters and relatively high yield level and has a relatively late heading period under an early sowing condition is selected and dry seeds sufficiently absorb moisture until the seeds are germinated and then are treated at a low temperature of 1-2 DEG C for 5-10 days; then the seeds are subjected to early sowing; and finally, a new wheat variety which has relatively high yield level is cultured by carrying out effect evaluation on testing of a seeding stage, a jointing stage, a heading period, a flowering period and a mature period of the wheat, and the yield and the yield structure. According to the application, the artificial vernalization and wheat yield breeding are combined for the first time, and a selection range of a certain type in the wheat yield breeding in a certain region can be expanded, and the difficulty of the wheat yield breeding in the region is reduced; with the adoption of the method, the high-quality wheat varieties with relatively high yield levels are treated and an adapted region range can be expanded; the novel wheat variety with relatively high yield can be easily obtained; when the cultured new wheat variety is applied, the seeds need to be subjected to the artificial vernalization treatment and then are sowed, so that the application can be used as a technical measure for protecting relevant rights and interests of breeders.

Description

technical field [0001] The invention belongs to the technical field of wheat yield breeding. Background technique [0002] Wheat is distributed all over the world. In order to adapt to the ecological climate conditions in different places, wheat has derived different ecological types. The wheat ecological type adapted to the local eco-climatic conditions ensures that the wheat will head, flower and bear fruit at the right time, thus completing the life cycle of wheat. The process of vernalization determines the differences in wheat ecotypes. The so-called vernalization of wheat means that after the germination of wheat seeds, the growth point of wheat must pass through a period of influence with low temperature as the dominant factor in addition to certain comprehensive conditions, before earing and fruiting can occur, otherwise it will be unfruitful for life. This period of low temperature influence is called the vernalization stage of wheat. This low-temperature vernal...

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Problems solved by technology

[0007] In view of this, the purpose of the present invention is to solve the problem that some wheat strains are heading late under early sowing conditions, and the yield potential cannot be fully brought into play, so as to increase the selection range of variety types in wheat yield breeding in a certain area, and also expand a certain area simultaneously. The range of regions to which the type wheat varieties are adapted, and eventually new varieties of wheat with higher yield levels are bred

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