Hybridization method for oats

Abstract

The invention discloses a hybridization method for oats. The hybridization method includes the steps of parent selecting, scion finishing, castrating, tassel preparing, bagging and pollination. The parent selecting step is improved, wherein female parents select individuals that 3 / 4 scions ear, male parents select individuals that 3 / 4 scions ear, the quantity of florets after being castrated can be effectively increased after improvement, and therefore the working efficiency is improved; the scion finishing step is improved, wherein 1 / 4 florets are reserved while clipping is carried out duringscion finishing, and the weight of seeds can be effectively increased; the tassel preparing and bagging steps are improved, wherein robust plants are selected in male parent lines, glume is not clipped, and the robust plants are directly inserted into test tubes, and positions of the male parent scions are higher than that of the female parent scions, so that it is guaranteed that pollen of the male parent scions can fall on stigmas of female parent florets from top to bottom. According to the hybridization method, the survival time of the male parent scions can be prolonged, the pollinationtime can be prolonged, the hybridization setting rate is increased, hybridization time can be effectively shortened when the glume is not clipped, and the influence on the hybridization efficiency isavoided.

Description

technical field [0001] The invention belongs to the technical field of oat hybridization and breeding, and in particular relates to an improved oat hybridization method. Background technique [0002] The hybridization process of oats in the prior art mainly includes the following steps: (1) Parental selection: select individuals with about 1 / 2 ears extracted from the female parent population as female parents, and male parents with 3 / 4 ears extracted (2) Whole spikes: After cutting off the pollinated spikelets on the top of the female spikelet or the spikelets that may have been pollinated and the spikelets that are too late in development at the base of the spikelets and may not be able to set seeds, use tweezers to remove the remaining spikelets. Cut off the remaining florets of the first floret at the base; (3) emasculation: Gently remove the three anthers that have been exposed with tweezers, without breaking the anthers or bruising the stigma (4) collection of pollen a...

AI Technical Summary

Problems solved by technology

[0003] The hybridization method of oats in the prior art mostly adopts the method of emasculation and pollination of glumes, wherein only 3 anthers are taken out in the emasculation step, and 6 anthers are retained. This method makes the harvested seeds have non-hybrid species

Moreover, the whole ear step in the existing oat hybridization method cuts off the upper part of the florets, which makes the harvested seeds smaller than the original species

In the prior art, the pollination method of glume clipping of the male parent requires a lot of time, and the male parent is directly bagged with the female parent, so that the viability of the male parent ear is maintained for a short time