A kind of wheat disease resistance breeding method

Abstract

The invention relates to the technical field of wheat breeding, in particular to a method for wheat disease resistance breeding. The method comprises the following steps: (1), preparing alternative wheat seeds, providing factors of infection disease, and enabling the alternative wheat seeds to grow under factors of infection disease; (2), observing the growing condition of the alternative wheat seeds during a whole growing period, and recording and selecting single resistant plants. The method provided by the invention well overcomes the phenomena of wrong selection caused by soil, pathogeny and time difference, and inconvenience in selection, caused by unevenness in occurrence condition, during the single resistant plant selecting process of wheat, and selection to single resistant plants during the entire growth period of wheat can be well achieved.

Description

Technical field [0001] The invention relates to the technical field of wheat breeding, in particular to a wheat disease-resistant breeding method. Background technique [0002] The annual output of wheat is reduced by as much as 10%-50% due to diseases. For a long time, due to the excessive emphasis on the improvement of economic traits in crop breeding, the genetic background of crops has been continuously reduced. A large number of cultivars "lost" excellent traits such as disease resistance, which not only limits the steady growth of crop yields, but also The occurrence of devastating diseases planted hidden dangers. [0003] However, the current selection method of wheat disease-resistant breeding is basically to select disease-resistant single plants in the disease nursery, mainly using natural or pathogenic bacteria inoculation to induce disease and then select. This method is severely restricted by geographical areas and is not conducive to selecting disease-resistant plant...

AI Technical Summary

Problems solved by technology

For a long time, due to the over-emphasis on the improvement of economic traits in crop breeding, the genetic background of crops has been continuously reduced, and a large number of cultivars have "lost" excellent traits such as disease resistance, which not only limits the stable growth of crop yields, but also provides The occurrence of devastating diseases lays a hidden danger

[0003] At present, the selection method of wheat disease-resistant breeding is basically to select disease-resistant single plants in the diseased nursery area, mainly to use natural or pathogenic bacteria inoculation to induce plant-induced disease and then select. This method is severely restricted by region and is not conducive to the selection of disease-resistant plants. single plant

However, in the existing technology of using a disease-induced plant (susceptible variety) to induce a certain disease or directly inoculating a certain disease to select a disease-resistant individual plant, in the actual operation process, the pressure for the selection of a disease-resistant individual plant Inconsistency will make the selection more difficult, and the possibility of disease-resistant selection in the whole growth period of wheat is less, which is not conducive to the selection of disease-resistant single plants