Abstract:

Cultivated Brassica oleracea is an important component of Chinese vegetables, and conventional breeding is the bottleneck for genetic improvement of Brassica oleracea in terms of yield and quality. Molecular breeding strategy can improve plant breeding efficiently. To improve molecular breeding of Brassica oleracea, the domestic and foreign research on the application of molecular breeding of Brassica oleracea vegetables are summarized from the aspects of high-quality genome and database, localization and cloning of genes related to target traits, breeding assisted by molecular markers, and gene editing. The core and key of large-scale germplasm innovation are identified as the genetic networks which can dissect and control important agronomic traits. The study points out that gene editing can accelerate the process of molecular breeding in Brassica oleracea vegetables, and discusses the strategy to strengthen the molecular breeding of Brassica oleracea, aiming to provide theoretical reference for further research.

Key words: molecular breeding, Brassica oleracea, genetic improvement breeding, functional genome