Breeding method capable of resisting wheat yellow mosaic disease

Abstract

The invention provides a breeding method capable of resisting wheat yellow mosaic disease, and relates to the technical field of a crop breeding method. According to the breeding method, Ningmai 9 which is high in yellow mosaic disease resistance and high in excellent character combining ability is taken as a male parent, and Ningmai 8 or Yangmai variety which is high in yield and wide in adaptation and has the yellow mosaic disease is taken as a female parent, The method comprises the steps of carrying out hybridization on the male parent and the female parent to obtain F1; breeding the F1 to produce F2, F3 and F4, selecting excellent single spikes of the F2 and the F3, and carrying out blend threshing; selecting excellent single spikes of the F4, separating the spikes for threshing, and sowing head progeny rows F5 in a disease nursery; carrying out wheat yellow mosaic disease resistance identification on the F5, and selecting the head progeny rows which are high in resistance and good in agronomic trait; then, sowing the harvested head progeny rows in the disease nursery to form spike lines F6; repeatedly identifying the disease resistance of all the spike lines, and selecting the excellent spike lines; sowing the excellent spike lines of the F6 to form an evaluation nursery, and selecting the good lines which are disease-resistant, good in quality and high in yield. According to the breeding method, excellent genetic recombination and additive effects which are supplemented by disease resistance, agronomic trait, quality character and the like are used for directional selection of multiple generations, so that Ningmai 16 and a batch of budding new lines which are disease-resistant, good in quality and high in yield are cultured; the new lines are high in yellow mosaic disease resistance and has the advantages of having scab resistance and being high in yield potential, prominent in special quality, and the like, thus having production application values.

Description

technical field [0001] The invention relates to the technical field of crop breeding methods, and belongs to a breeding method for resistance to wheat yellow mosaic disease. Background technique [0002] Wheat Yellow Mosaic Virus (WYMV) is a viral disease that seriously damages wheat in spring caused by the virus transmitted by Polymyxa graminearum. The disease was first discovered in Canada, and it is widely distributed in the United States, Germany, India, France and other countries abroad. Since the 1970s, it has appeared in nearly 10 provinces in the middle and lower reaches of the Yangtze River and the Yellow River in China, and the disease area has continued to expand. The annual area of ​​the disease has reached more than 10 million mu in the country, and the disease area of ​​wheat in Jiangsu Province has exceeded 3 million mu. , Wheat damage generally reduces production by 10-50%, and severe cases reduce production by more than 85%, or even fail. There are two ma...

AI Technical Summary

Problems solved by technology

Since there is still a lack of effective pesticides to control the disease, breeding resistant varieties is the most economical and effective way to control the prevalence of the disease