A method for breeding same-type waxy corn inbred lines using sweet corn inbred lines

Abstract

The invention relates to a method for breeding homotype waxy corn selfing line by sweet corn selfing line. The method comprises the steps of (1) selecting waxy corn resource as female parent and sweet corn selfing line as male parent to obtain cross-bred clusters; (2) planting seeds of the cross-bred clusters, and taking sweet corn selfing line as male parent to obtain backcross clusters; (3) threshing the backcross clusters, selecting and remaining non-sweet seeds, planting single seeds, carrying out single plant bagging selfing, selecting clusters with waxy seeds, threshing single clusters, and selecting and remaining waxy non-sweet seeds; (4) planting the waxy non-sweet seeds selected and remained by step (3), repeating three cycles from step (1) to step (3) to obtain the waxy corn selfing material which has the same type as the sweet corn selfing line; and (5) carrying out single seed planting on the selfing material obtained in step (4), carrying out single plate bagging selfing, and selecting the clusters without sweet seeds to be threshed to obtain the waxy corn selfing line which has the same type as that of the sweet corn selfing line.

Description

technical field

[0001] The invention relates to a method for breeding same-type waxy corn inbred lines by using sweet corn inbred lines, and belongs to the technical field of new agricultural variety breeding. Background technique

[0002] Breeding of inbred lines is an important link in the cultivation of new agricultural varieties, and fresh edible waxy corn is no exception. In recent years, with the improvement of people's living standards and the strengthening of health awareness, people have put forward higher and higher requirements for the taste and quality of fresh waxy corn products. However, the existing waxy corn breeding resources are relatively scarce, with good quality and resistance. Good, high-yielding resources are especially scarce. Breeders have been looking for new ideas and methods for germplasm innovation of waxy maize. Although waxy corn and sweet corn belong to the same type of fresh corn, they are controlled by different genetic loci. After crossin...