Changyou 4 (Rice)

The plant type is compact, the growth is prosperous, the panicle type is large, the tillering ability is medium, the leaf color is medium green, the population uniformity is good, the late mature color is good, and the lodging resistance is strong; in inoculation identification, it is resistant to bacterial blight, panicle neck blast and sheath blight; stripe blight was identified in the field from 2005 to 2006, with the highest incidence rate of 69.5% (the average incidence rate of the susceptible control was 87.6%). The quality was tested by the Food quality Inspection Center of the Ministry of Agriculture in 2006, the rate of head rice was 62.4%, the rate of chalky grains was 25.0%, the degree of chalkiness was 1.5%, the gel consistency was 72.0 mm, and the content of amylose was 15.5%. The physical and chemical indexes of rice quality reached the third-grade high-quality rice standard of the national standard.