Rapid purifying and selecting method of chili pepper filial generation

Abstract

The invention belongs to the plant cross breeding technical field and relates to a breeding method of the chili pepper filial generation, in particular to a rapid purifying and selecting method of the chili pepper filial generation. Currently, the prior purifying and selecting method of chili pepper filial generation is poor in stability and consistency of progeny, can not satisfy the basic requirements of novelty, stability and consistency of new crop varieties at home and abroad and has the disadvantages of labor consuming and time consuming, low selecting efficiency and low accuracy. The rapid purifying and selecting method of the chili pepper filial generation provided by the invention adopts single hill double-strain field planting, ntaneous open pollination and insect prevention during efflorescence pollination period of Mengo and pair fruit in the selecting of the filial generation and selects single fruits at the first segment and the second segment for the seed selection after 80 percent of plant fruits ripe. Obvious outcrossing single fruit systems are eliminated in the field. Stable and consistent chili pepper breeds or strains which accord with objective traits can be selected within short time.

Description

technical field [0001] The invention belongs to the technical field of plant hybridization and breeding, and relates to a method for breeding hybrid progeny of pepper, in particular to a rapid purification and selection method for hybrid progeny of pepper. Background technique [0002] Line pepper (Casicum annum L.) belongs to the annual pepper species of the genus Capsicum in the family Solanaceae, and is often outcrossed. Thread pepper is mainly produced in China and is an important type of pepper used for processing in China. At present, about 200,000 hectares are planted annually in China, mainly distributed in Shaanxi, Xinjiang, Sichuan, Gansu, Chongqing, Yunnan, Guizhou, Shanxi and other provinces (regions). China is at the leading level in the world in the fields of online pepper breeding, germplasm resource creation, and cultivation technology research. However, due to factors such as the characteristics of the pepper itself and the output value per unit area, most o...

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Problems solved by technology

[0006] In the above methods, the offspring selected by the first two methods are poor in stability and consistency, and cannot meet the basic requirements (namely, novelty, stability, and consistency) for new crop varieties at home and abroad. Although the offspring selected by the three methods have good stability and consistency, there are three deficiencies in the breeding process. First, the workload of selfing is relatively large; The overall growth and development of the plant and the performance of related traits, especially the clustering (clustering means that one node bears multiple flowers and bears multiple fruits. This trait is an important trait for high-yield peppers. It is currently being promoted and applied. Most of the line pepper new varieties and breeding resources are clustered), if the contemporary selection will affect the accuracy of selection, if the next generation selection will inevitably reduce the purification efficiency and prolong the breeding period; thirdly, a large number of artificial selfing will affect The probability of the selected plant population being infected with certain viral diseases (viral diseases caused by a variety of virus infections is a major disease of current-line peppers), affects the comparability and accuracy of selection

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