Chang Crops is engaged in the research of wheat genetics and breeding, and has successively presided over the construction of high-quality seed base of wheat by the National Development and Reform Commission, the "948" of the Ministry of Agriculture, the Spark Plan of the Ministry of Science and Technology, and the key scientific and technological projects of Shaanxi Province 10, with a total funding of more than 5 million yuan; He has presided over and participated in the cultivation of six new wheat varieties, including Shaanxi 253, Shaanxi 7 15, Shaanxi 229, Shaanxi 2 13 and Shaanxi 354. As the first author and correspondent, he has published more than 60 papers in Acta Crops, Acta Crops, Journal of Northwest Botany, Journal of Northwest Agriculture, journal of triticeae crops and Bulletin of China Agricultural Science. Published 3 monographs and edited 5 books; Won the provincial and ministerial scientific and technological achievement award 10.
Shaanxi 253, a new wheat variety, passed the examination and approval of crop varieties in Shaanxi Province on 200 1, which is a high-quality strong gluten wheat variety and has been widely praised by the society. It has become the main high-quality wheat variety in Shaanxi Province, planted 10 million mu in Huanghuai wheat area, and was rated as one of the top ten agricultural scientific and technological achievements in Shaanxi Province in 2005. Shaanxi 7 15, a new wheat variety selected by the director, passed the crop variety examination and approval in Shaanxi Province in 2005 and reached the national standard of strong gluten wheat. It is a high-quality strong gluten wheat variety, which has been widely planted in Shaanxi and Huanghuai wheat areas and is deeply loved by farmers and processing enterprises.
In the research of wheat quality breeding, combined with the actual situation of variety utilization in China, the inheritance law of wheat high-quality subunits and the expression and accumulation characteristics of wheat high-quality subunits under the quality background were emphatically studied. The comprehensive quality scoring system of high molecular weight glutenin subunits was proposed for the first time. For the first time, the deletion or expression silence of subunits was found in F 1 and F2 generations. Therefore, at the molecular level of quality formation, it provides a theoretical basis for wheat quality breeding.
In wheat disease-resistant breeding, the identification method and discriminant function of slow rust varieties in rust-resistant breeding were studied and established, which provided theoretical guidance for wheat disease-resistant breeding and won the second prize of scientific and technological progress in Shaanxi Province.