Bagging method and pollination method for corn hybrid pollination

Abstract

The invention relates to the field of corn breeding, in particular to a corn hybridization pollination leaf rotating and folding female spike bagging method and a pollination method. The corn hybridization pollination rotary folding leaf female spike bagging method comprises the following steps: rotating and folding a part, with the distance 15-20 cm from a spike position leaf to the base part of the leaf, of the spike position leaf, and fixing the leaf end part of the spike position leaf at the intersection position of the next leaf on the same side and the stem; bagging the rotating and folding position of the spike position leaf and the tip of the female spike jointly. By the method, a paper bag is tightened by tension generated by that the rotated spike position leaf recovers to the original shape, and the sleeved bag is form and not liable to loose, slide and remove; damage to the leaf is avoided. Pollination, which is conducted after bagging is conducted by the method, is very simple and convenient to operate and is quick and efficient, the technology is simple and easy to master, the bagging efficiency is increased by more than six times, the pollination efficiency is increased by more than 5 times, the foreign pollen pollution ratio is reduced by more than 15%, the traditional fixing process is avoided, the material articles and the labor expense of bagging and pollination are saved, the cost is obviously reduced and the method is very easy to popularize and apply.

Description

Technical field [0001] The present invention relates to the field of maize breeding, in particular, to a method for bagging a female ear of maize cross-pollination rotation and folding and a pollination method. Background technique [0002] Maize is a cross-pollinated plant. The pollen of the male flower floats on the silk of the female ear with the wind and is fertilized and solidified, completing the generational alternation. In the process of maize breeding, the selection and purification of inbred lines, the cross-matching test of parental materials, etc., require the pollen of the male flower of the target individual and the filaments of the female ear flower of the target individual to be fertilized separately. 、Before spinning, wrap it with a professional paper bag to isolate adjacent pollen to avoid fertilization. At present, there are two main methods commonly used by agricultural scientific research departments. One is the traditional bagging method. When the ears of t...

AI Technical Summary

Problems solved by technology

At present, there are mainly two methods commonly used by agricultural scientific research departments. One is the traditional bagging method. When the ear of the test sample corn is exposed (the ear is stretched out of the leaf sheath), the ear tip is covered with a paper bag, and a spring clip, paper clip and Pins and other materials are used to fix the mouth of the bag to prevent it from being blown off by the wind. After the filaments grow about 3 cm long, the paper bag is disassembled for artificial pollination. After pollination, the paper bag is quickly put on and fixed with a needle and thread; If the ear leaf is broken or cut off, put the paper bag on the ear tip and the broken leaf. The broken leaf has no tension, and the paper bag is easy to loosen and fall off. The paper bag is not tightly sealed, and foreign pollen can easily cause pollution. The method needs to use scissors and other materials to cut leaves, and there are many processes