Rapid cross breeding method without emasculation

Abstract

The invention provides a rapid cross breeding method without emasculation. The method comprises steps as follows: inflorescence sorting is performed before blooming of a female parent plant, flower buds capable of being fertilized and fruiting are selected, then the selected flower buds are rubbed open by tweezers along sepal gaps to expose pistil stigmas, finally, male parent pollen used for combination according to the plan is taken for immediate pollination, and hybridization is completed. Compared with emasculation hybridization, the method has the advantages that the effect can be improved three times or more, quality is good, and the seed bearing number is large; the pollen of the selected 10 flower buds is not mature, foreign mature pollen used as the male parent is sent to female parent stigmas, so that the probability of self-pollination is low, meanwhile, the preparation work time for hybridization is shorter, the polluted probability of foreign pollen is also low, and the hybridization quality is high.

Description

technical field [0001] The invention belongs to the technical field of plant cross-breeding, and in particular relates to a method for fast cross-breeding without taking males. Background technique [0002] It is a classic breeding method to cross two parents with different genetic backgrounds and excellent traits to select new varieties (or new germplasm resources). No matter what kind of crops this method will be as the parent of the female parent first castrated, and then the pollen of the male parent will be given to the castrated female parent's stigma to complete the hybridization of the two parents. Except for maize, most crops are monoecious and have small floral organs. Due to the strict requirements for detasseling, young people with good eyesight are generally required to do hybridization work, and detasseling must be very thorough, all male flowers must be removed, and care should be taken not to damage the pistils to ensure the quality of hybrid seeds Therefor...

AI Technical Summary

Problems solved by technology

Due to the strict requirements for detasseling, young people with good eyesight are generally required to do hybridization work, and detasseling must be very thorough, all male flowers must be removed, and care should be taken not to damage the pistils to ensure the quality of hybrid seeds Therefore, when carrying out hybridization work, it not only consumes manpower and material resources, but also it is difficult to ensure the quality and quantity of hybrid seeds

Images