Marking method for plant hybridization breeding combinations

Abstract

The invention discloses a marking method for plant hybridization breeding combinations. Firstly, female parents are divided according to varieties or strains, and female parents of the same varieties or strains are planted in same areas; according to a breeding plan, lines in different colors are tied onto flower stalks of the female parents to distinguish hybridization combinations of the same female parent with different male parents in the same area, then area numbers, the combinations of the female parents with the different male parents and the colors of the corresponding lines are recorded, and then hybridization is carried out; after seeds are ripe, the seeds are harvested according to the colors of the lines on the flower stalks of the female parents in each area, the seeds marked with the lines in same colors are put together, seed-parent combinations are distinguished according to the information recorded in advance after the harvest is completed, and follow-up testing is carried out. The marking method provided by the invention is simple and convenient, the cost is low, lightness is realized, flower buds are not broken easily, and the possibility of fading is low; at the same time, the harvest is simple, card reading and line unbinding are not required, the possibility of confusion is low, and the plant hybridization efficiency can be improved by more than 1 time, so that the method has a relatively large application prospect.

Description

technical field [0001] The invention belongs to the technical field of plant breeding. More specifically, it relates to a marking method for plant cross breeding combination. Background technique [0002] Hybrid breeding is a method of combining the excellent characters of two or more varieties through mating, and then selecting and cultivating them to obtain new varieties. Hybridization can recombine the genes of the parents to form various types, providing rich materials for selection. [0003] Hybridization between sweet potato varieties has always been the most important way of sweet potato breeding. When using single cross, multi-parent cross, compound cross and other hybrid methods, they all rely on artificial pollination. The seed setting rate of sweet potato hybrids is about 15% under natural conditions, and can be increased to about 30% after physical or chemical treatment. Since the success of pollination cannot be predicted, every flower that has been artificia...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of complex operation and low efficiency of the parental marking method of field hybrid breeding in the prior art, and provide a simple and effective method to distinguish different parental combinations when the plants are hybridized and grouped, Different color lines are used to tie the flower stalks of the female parent to mark different hybrid combinations, that is, the same female parent is crossed with different male parents, and the male parents are distinguished by the color of the thread of the female parent flower stalk

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