Selection and breeding method for color sweet-glutinous maize inbred line

Abstract

The invention discloses a selection and breeding method for a color sweet-glutinous maize inbred line, and belongs to the field of maize breeding. The method comprises the following steps: (1) hybridization is performed by using a purple-glutinous maize seed as a female parent and a white-sweet maize seed as a male parent, and therefore an F1 generation is obtained; (2) purple seeds in the F1 generation are selected and planted, backcrossing is performed by using purple-glutinous maize seeds as male parents, and therefore an F2 generation is obtained; (3) purple-glutinous seeds are selected from the F2 generation, each seed is singly planted, bagging is performed on every grown maize for self breeding, and therefore an F3 generation is obtained; (4) ears with white-sweet seeds which appear in the F3 generation are selected, all purple-glutinous seeds on the ears are selected out and the selected seeds are separately singly sown, bagging is performed on every grown maize for self breeding, and therefore an F4 generation is obtained; and (5) white-sweet seeds in the F4 generation are selected and planted, and self breeding is continuously performed for 3-4 generations according to quality, resistance and plant types, so that the color sweet-glutinous maize inbred line is bred, and the inbred line can be used to breed stock seeds through self breeding or mixed breeding. Fruits of the color sweet-glutinous maize inbred line bred by the method are sweet and glutinous, and colourful in appearances.

Description

technical field [0001] The invention relates to a breeding method for a colored sweet waxy corn inbred line, which belongs to the field of corn breeding. Background technique [0002] The breeding of high-quality colored sweet waxy corn inbred lines is the basis of new varieties. With the market demand for fresh corn and the increase of consumer groups, the breeding of new varieties of sweet and waxy corn has become the direction of efforts of breeders. Genetic studies have shown that both the sweet quality gene and the waxy quality gene are recessive, and the sweet quality is epistatic to the waxy quality, that is, the homozygous sweet quality and waxy quality are sweet quality. Therefore, the same grain can only be sweet or waxy. By crossing the sweet and waxy double recessive inbred line with the waxy homozygous inbred line, the F2 ear of the F1 plant shows a 1:3 separation of sweet and waxy grains. The taste is sweet and glutinous corn type. Therefore, breeding sweet ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for breeding colored sweet and waxy corn inbred lines, which solves the problem that the sweetness and waxiness of corn and the variety of corn appearance and color cannot be taken into account.