Abstract:Plenty of leading varieties and backbone parents have been bred in Zhejiang Province, even though the rice planting area is relatively small compared to many other provinces in China. Summarizing the rice breeding experience and results in Zhejiang will not only help to understand the breeding history, but also have important reference values for breeders in selecting breeding parents. Based on the VBA programming, the algorithm is compiled to analyze the variety records for Zhejiang included in the Database for Chinese Rice Varieties and their Genealogy. From 1980 to 2019, 655 rice varieties were bred in the province, among which 514 varieties were certified, and 291 varieties have been grown in large areas. Our analysis shows that the yield per unit area and the edibility quality, chalkiness and transparency of the certified varieties have been raised, while the resistance to bacterial leaf blight of rice has remained roughly the same, and the resistance to rice blast has been somewhat lowered but still higher than the average level of resistance to rice blast of nationally certified varieties in the same rice-growing area in the same time period.