Breeding method of anthocyanin-rich disease-resistant aromatic rice variety

Abstract

The invention is suitable for the technical field of breeding, and provides a breeding method of an anthocyanin-rich disease-resistant aromatic rice variety. According to the invention, a high-quality rice variety which is widely popularized at present and has excellent comprehensive characters and good resistance is hybridized and backcrossed with an anthocyanin-rich rice variety, molecular marker-assisted selection of a rice blast resistance gene and a fragrance regulation gene is carried out, rice blast and bacterial blight resistance is identified in combination with rice blast disease area identification and bacterial blight artificial inoculation identification, and the novel anthocyanin-rich rice strain with excellent yielding ability, disease resistance and comprehensive agronomic traits is obtained. According to the method, the genetic background of the purple rice variety is effectively improved by hybridizing the purple rice variety and the mainly-planted high-quality rice variety with excellent comprehensive agronomic traits; and meanwhile, molecular marker-assisted selection and pedigree breeding are combined, target genotypes and comprehensive agronomic traits are concerned in the whole breeding process at the same time, foreground selection and background selection are both considered, and the breeding process is improved.

Description

technical field [0001] The invention belongs to the technical field of breeding, and in particular relates to a method for breeding anthocyanin-rich and disease-resistant aroma rice varieties. Background technique [0002] Anthocyanin is the main pigment of many ornamental plants and fruits, and it is also an important phytonutrient. It has strong antioxidant activity and has an important health care effect on human health. Compared with ordinary white rice, the purple rice aleurone layer is rich in anthocyanins and dietary components, with higher nutritional value, and is an important supplement to meet people's life and health. Ordinary purple, black and other colored rice varieties often have low yield, poor disease resistance, and are prone to lodging. Although they have important market potential, they are not suitable for the current light and simplified cultivation mode. If different purple rice varieties are used for hybrid line selection, it is difficult to obtain ...

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a method for breeding anthocyanin-rich and disease-resistant aromatic rice varieties, aiming to solve the current problems of low yield, weak disease resistance, and poor comprehensive agronomic shape of special rice species rich in anthocyanins.

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