A pollination method for improving corn pollination efficiency

Abstract

The invention belongs to the field of crop breeding and provides a pollination method capable of improving pollination efficiency of corn. The method comprises steps as follows: firstly, horizontally cutting is performed on bracts of corn ears, and top ends of the bracts are cut off; then oblique cutting and side cutting are performed on the bracts with the top ends cut off, bracts around filaments are removed, and the filaments are exposed; then pollen is immediately sprayed outside the filaments. According to the method, after cutting is finished, lengths of the filaments exposed out of the bracts are 1-2 cm and can just reach the pollination standard, and then pollination can be performed directly; the method is simple and quick, the bracts are only required to be cut for five times, then the filaments can meet the pollination requirement, so that the pollination time is shortened, and the breeding efficiency is improved.

Description

technical field [0001] The invention belongs to the field of crop breeding, and in particular relates to a pollination method for improving corn pollination efficiency. Background technique [0002] Corn is one of the most important cereal crops in the world. It has become a multi-purpose crop such as food, economy, feed, fruits and vegetables, and energy. Since 2006, the planting area and output of corn have maintained the first place in the country [1] . [0003] With the increasing demand for corn in production, corn breeding must keep up with the pace, and bagging pollination is a key link in corn hybrid breeding [2] . In the actual breeding process, due to drought or other reasons, the flowering period is not met (irregular flowering period) is a common problem, that is, the tassel pollination of corn has ended, but the ear ear is too long or the bract is tightly wrapped. However, the silk has not yet been spun, which brings a lot of trouble for pollination [3-4] . ...

AI Technical Summary

Problems solved by technology

In this way, it is better for plants or hybrid combinations with little difference in flowering period, but in the actual breeding process, there are many cases where the flowering period between male and female ears is quite different. , the pollen may have been dispersed, and the pollen viability may also become poor, which not only affects the progress of breeding and pollination, but also makes it difficult to guarantee the effect of fruiting; in case of drought conditions, even if the bract leaves are cut off, the filaments may not protrude normally, Pollination is difficult to guarantee

In addition, it takes one day for pollination, which wastes manpower and time, and also increases the cost virtually.

Studies have shown that all parts of the filament have the ability to receive pollen and fertilize [6-7] , but in the existing pollination methods, the method of using this ability of filaments to improve the pollination efficiency of maize has not yet been studied

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