Method for cutting seedlings of ancient poplar

Abstract

The invention discloses a method for cutting seedlings of an ancient poplar and relates to the vegetative propagation technology. The cutting seedling method comprises steps of 1), collecting ancientpoplar branches; 2), preparing cutting branches; 3), pre-treating the cutting branches; 4), preparing cutting seedling beds; 5), cutting the cutting branches; 6), management after cutting; and 7), transplanting seedlings. The method is advantaged in that ancient poplar seedlings are cultivated through hardwood cutting, the cutting survival rate is increased, pests and diseases are reduced, the quality of seedlings is high, excellent genes inherent in the ancient poplar can be stably extended, the research not only lays a foundation for protection and cloning of poplar ancient trees, but also provides a large amount of research materials for rapid, stable and high-quality development of the ancient poplar biotechnology, and the direction is further provided for vegetative propagation of other ancient trees.

Description

technical field [0001] The invention relates to the technical field of asexual reproduction, in particular to a method for raising seedlings by cuttings of ancient poplars. Background technique [0002] Poplar has the characteristics of wide distribution, strong adaptability, fast growth, easy reproduction and wide application, so it is regarded as an excellent afforestation tree species for papermaking, shelter forest and short-term rotation, and has made significant contributions to forestry production and regional ecological governance. The geographical and climate types in Southwest China are complex and diverse, and the genetic resources of Poplar are very rich. It is one of the natural distribution centers of poplar in my country. Due to the unique geographical and historical conditions, this area contains rich resources of ancient poplar, which has a long history. It is a symbol of the degree of social civilization and a historical recorder of environmental changes suc...

AI Technical Summary

Problems solved by technology

[0004] In summary, the problems in the prior art: traditional poplar propagation methods generally adopt cuttings and seed sowing (CN 107094566 A discloses a method for raising seedlings by cuttings of poplars, including cutting condition control, cuttings pretreatment , control the humidity in the shed in daily management and reduce the reproduction of residual pathogens on the leaves, etc., so that the disease rate of the cultivated seedlings is reduced, the use of chemical agents is reduced, the cost of raising seedlings is reduced, and the ecological environment is protected), but ancient poplars are due to the age of the trees. It is much higher than ordinary poplar, its growth is weak, and the damage of diseases and insect pests is relatively serious. The survival rate of poplar cannot be guaranteed by conventional poplar cutting technology, and the seeds are even more difficult to collect, and the germination rate after collection is also very low. All these are The cost of reproduction of ancient poplars is relatively high, and the reproduction effect is poor. It is impossible to protect the excellent genetic traits of ancient poplars, and it is impossible to quickly and efficiently develop the longevity genes, disease and insect resistance genes, and salt resistance of ancient poplars for modern biotechnology. The development of important subjects such as alkali genes, anti-severe cold genes, and high-temperature resistance genes provides a large amount of research materials. For this reason, the present invention provides a method for raising seedlings by cuttings of ancient poplars for the characteristics of ancient poplars.