Abstract:

Jinzao 645 is a high-yield, disease-resistant, good-quality and specialized conventional early indica rice variety, which was bred through the systematical selection of the cross of Jinzao 09 and Z73-34, and was bred by Jinhua Academy of Agricultural Sciences and Jinhua Sancai Seeds Company. It was approved by the Crop Variety Approval Committee of Zhejiang Province in 2021, and was recorded for introduction by the Department of Agriculture and Rurral Affairs of Jiangxi Province and was authorized as a new plant variety in 2023, and was listed as the leading variety of Zhejiang Province in 2024. Jinzao 645 showed the characteristics of tidy group, high tillering ability, resistance to rice blast, high lodging resistance, high yield, stable yield, and good adaptability when participated in the new variety regional test and demonstration planting in Zhejiang Province and Jiangxi Province from 2019 to 2023, and has high value of popularization and application.

Key words: early indica rice, Jinzao 645, breeding, characteristics, cultivation techniques, application