An Improved Cross Pollination Method for Improving Wheat Seed Setting Rate

Abstract

The invention discloses an improved hybrid pollination method for increasing the seed setting rate of wheat, belonging to the technical field of plant breeding. In the present invention, the wheat ear of the male parent of the sexual hybridization of wheat is cultivated with casing sterilized nutrient solution to prolong the vigor of the ear of the male parent to ensure a longer pollination time, beat it regularly and multiple times to increase the probability of pollination, and cover it with a kraft paper bag to prevent pollination. and late grain mildew. The hybridization seed-setting rate of the cross-pollination method of cultivation in the sterilized nutrient solution of the present invention is kept above 85%. The method reduces the mechanical damage to the pistil of the female parent, reduces the probability of hybridization and germ infection, and the cross-pollination process It can be carried out all day, the work intensity is reduced, and the work efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of plant breeding, and in particular relates to an improved hybrid pollination method for increasing the seed setting rate of wheat. Background technique [0002] At present, there are many wheat breeding methods, such as conventional breeding, mutation breeding, hybrid breeding, etc., but up to now, the number of varieties bred by traditional hybridization methods still accounts for the majority, and sexual hybridization is still artificially creating new variations and screening new germplasm. , One of the main methods of breeding new varieties. In wheat hybrid breeding, artificial emasculation and artificial pollination are usually used to obtain hybrid seeds. Artificial twist pollination and smear pollination are generally effective when the wheat flowering period is concentrated at 9-11 am. Exposure to the outside for a long time, it is easy to be pollinated by heterologous pollen or infected by Fusari...

AI Technical Summary

Problems solved by technology

In wheat hybrid breeding, artificial emasculation and artificial pollination are usually used to obtain hybrid seeds. Artificial ear pollination and smear pollination are generally effective at 9-11 am when the wheat flowering period is concentrated. During pollination, due to the long ear head Exposure to the outside for a long time, it is easy to be pollinated by heterologous pollen or infected by Fusarium graminearum and other pathogens, so there are often situations such as low pollination efficiency, low seed setting rate, and poor seed quality. Therefore, the hybrid pollination method of wheat is improved to effectively It is particularly important to improve the efficiency of hybrid breeding and the quality of hybrid seeds

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