Wheat mutation breeding method

Abstract

The invention relates to the technical field of biological breeding, and in particular, relates to a wheat mutation breeding method. The wheat mutation breeding method specifically comprises the steps: carrying out 60Co gamma ray induced treatment on wheat seeds, then treating with gibberellin with the concentration of 300-400 mg / L, and carrying out high and low temperature alternative culture ofthe gibberellin treated seeds, wherein in the process of high and low temperature alternative culture, the low-temperature culture temperature is 14-16 DEG C, the culture time is 11-13 hours, the high-temperature culture temperature is 19-21 DEG C, and the culture time is 11-13 hours; and transplanting the wheat obtained by high and low temperature treatment to a field, and fixedly planting. The problem that all the wheat seeds obtained by 60Co gamma ray induction are susceptible to infection of rust disease is effectively solved, the wheat obtained by breeding is transplanted to the field, and the rust disease occurrence rate is less than 0.4% in the premise without rust prevention and control.

Description

technical field [0001] The invention relates to the technical field of biological breeding, in particular to a wheat mutation breeding method. Background technique [0002] Wheat mutation breeding is the artificial use of physical mutagenic factors (such as X-rays, γ-rays, β-rays, fast neutrons, lasers, electron beams, ion beams, ultraviolet rays, etc.) nitrogen compounds, base analogs, etc.) to induce genetic variation in wheat, obtain useful mutants in a relatively short period of time, and according to the requirements of breeding objectives, select new germplasm and use them as parents in breeding (that is, mutants are indirectly using) breeding approach, the current wheat mutagenic factors are mainly 60 Coγ-rays, different exposure doses have different specific induction effects, but the general 60 Wheat seeds induced by Coγ-rays are susceptible to rust. At present, there is no good control method except chemical means for control during planting. Contents of the in...

AI Technical Summary

Problems solved by technology

[0003] To solve the use of 60 The wheat seeds induced by Co gamma rays all appear to be susceptible to rust, and the present invention selects 60 After the wheat was induced by Coγ-rays, the seedlings were uniformly raised in the seedling room, and the wheat was treated with high and low temperature during the seedling raising period to promote the accumulation of a large amount of total phenolic acids in the wheat root system and improve the ability of the wheat root system to prevent rust infection. Reducing the Incidence of Rust During Wheat Planting