Quick Bagging Method of Ear Broken Leaves in Maize Hybrid Breeding

Abstract

The invention discloses a quick bagging method for a broken ear functional leaf in corn crossbreeding. The method comprises the following steps: (1) when the ear tip of a corn ear justly grows to form a leaf sheath, breaking off an ear functional leaf; (2) sheathing a paper bag onto the broken leaf and the ear tip to be tensioned by use of tension force between the broken leaf and the ear tip, when the functional leaf is broken off, the fracture position of the ear functional leaf is away about 10-20cm from the leaf sheath upwards, the breaking-off manner adopts nipping off, shearing off or cutting off, and the not fracture of the broken leaf is ensured, so that the tension force is kept; an opening of the paper bag is inserted into the leaf sheath by 2-3cm and then is clipped, when the pollination is performed, the paper bag is removed, and the original paper bag is bagged again until the ear is matured after the pollination, so that non-target pollens are prevented from pollination and fertilization. A traditional concept is changed, the leaf-breaking bagging process is adopted for breeding, no adverse effect on young ears is caused, the necessary bagging process is simple and rapid, the working efficiency is improved by more than 5 times, the pollinating efficiency is increased by more than 4 times, the procedure of adjusting a fixing part manually is avoided, materials are saved, and the cost is obviously reduced; besides, the method is simple, convenient to operate and easy to implement.

Description

technical field [0001] The invention belongs to a breeding technique, in particular to a rapid bagging method for corn hybrid breeding with broken ears and broken leaves. Background technique [0002] When bagging the ears, put a special paper bag on the tip of the ear, and fix the paper bag with materials such as spring clips, paper clips and thin threads. Maize is a cross-pollinated plant. The pollen of the male flower falls with the wind to the filaments of the ear to fertilize and solidify, completing the alternation of generations. In the selection and breeding process of maize, the selection and purification of inbred lines, the cross-matching test of parental materials, etc., all require the pollen of the male flower of the target individual and the silk of the ear flower of the target individual to be fertilized separately, and must be fertilized in the ear dew. Cover the pollen with a professional paper bag after pointing and before silking to isolate adjacent poll...

AI Technical Summary

Problems solved by technology

[0003] Purpose of the present invention is exactly at the problem existing in above-mentioned prior art, proposes a kind of corn hybrid breeding ear broken leaf fast bagging method, this technology can simplify ear bagging operation method, improve work efficiency, improve bagging quality, The wind and rain will not fall off, so as to overcome the slow and long operation process of the existing technology, the long time-consuming, poor isolation effect, high risk of powder stringing, and the bag is easy to fall off during the growth and elongation of the ears, resulting in the scrapping of many individual samples Not enough

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