Innovative Utilization and New Material Development of High-Yielding and High-Quality Rice Variety Huanghuazhan

Huanghuazhan is a widely adaptable fragrant rice（Indica rice）conventional variety from southern China, characterized by its high yield and quality. Since its development by the Guangdong Academy of Agricultural Sciences in 2006, it has been extensively cultivated in provinces such as Zhejiang, central and southern Guangdong, central and southern Guangxi, and the hilly areas of Hunan. Production practices have shown that Huanghuazhan has poor resistance to rice blast disease, posing certain production risks in areas where the disease is prevalent. To utilize Huanghuazhan for breeding new conventional varieties and genetic innovation, we have used it as a breeding parent and crossed it with nine widely promoted high-quality, high-yield, and disease-resistant hybrid rice varieties. Through conventional breeding and resistance screening methods, we have developed several new materials with good resistance, high yield, and strong adaptability.