A high-branch layering propagation method for obtaining mango seedlings with consistent genetic background

Abstract

The invention discloses an air layering propagation method for acquiring mango seedlings with consistent genetic backgrounds. The air layering propagation method includes selecting mother trees, cutting off sprigs on principal branches, transversely injuring shoot bark positions by means of cutting, pruning leaves, scrubbing shoot skin without the leaves, girdling bark, wrapping girdled locations by absorbent cotton and binding the girdled locations by external preservative films; wrapping cut injured positions and girdled positions with substrates, wrapping each piece of shoot with substrates, bagging each piece of shoot, spraying uncut leaves on tips of the shoot, periodically supplementing water, pruning the rooted shoot after a few months and checking rooting conditions to obtain seedlings; planting the seedlings to fields and then managing the seedlings according to normal fertilizer application standards to obtain the mango seedlings with the consistent genetic backgrounds. The air layering propagation method has the advantages that grafting or interaction of rootstocks and scions can be omitted, excellent traits of the mother trees can be kept, and research materials with completely consistent genetic backgrounds can be provided; the air layering propagation method has simple requirements on basic facilities, includes simple and feasible step and is low in operation cost.

Description

technical field [0001] The invention belongs to the breeding technology of agricultural and forestry economic crops, in particular to a mango high-branch layering propagation method, in particular to a high-branch layering propagation method for obtaining mango seedlings with consistent genetic backgrounds. Background technique [0002] Mango (Mangifera indica L.) is a tall tree of the genus Mangifera (Anacardiaceae) in the family Anacardiaceae. It has a long history of cultivation and has been artificially cultivated for more than 4,000 years. It has a wide range of cultivation areas and is found in more than 100 tropical and subtropical countries in the world. distributed. Because of its beautiful fruit shape, sweet taste, strong fragrance and rich nutrition, it is called "the king of tropical fruits". The main producing areas of mango in the world are India, Indonesia, Malay Peninsula, Thailand and other Southeast Asian countries and regions, and there are more than 300 ...

AI Technical Summary

Problems solved by technology

But mango tree is a tropical tree species. Firstly, the temperature required for rooting is relatively high. Secondly, after the bark is cut, more sap will flow out and even form gum. It is impossible to obtain good rooting conditions by using the high-branch layering method that has been disclosed or reported so far. At present, there is no reasonable method of using high-branch layering to obtain mango seedlings, especially the method of using high-branch layering to obtain mango seedlings with consistent genetic background and good rooting conditions.