A large-scale propagation method of apple dwarfing self-root stock sh38 or sh40

Abstract

The invention relates to a method for large-scale propagation of apple dwarfing self-root stock SH38 or SH40. The method is suitable for cultivating SH38 or SH40, specifically grafted seedlings using SH38 or SH40 close to the rhizome and using Octagonal Begonia as rootstock. Or the self-rooted seedlings are used as the mother tree, through carving buds on the annual branches, horizontal layering, fixing the soil, twisting the base of new shoots that germinate from the horizontal layering, hormone treatment, landfill substrate, humidity and fertilization management, seedlings, and division. Seedlings were obtained from SH38 or SH40 dwarf self-root stock. The propagation method of the present invention adopts SH38 or SH40 semi-lignified young shoots that do not leave the parent body for rooting, and has the advantages of mild propagation conditions, simple production process, strong technical operability and implementability, high seedling rate, and high seedling quality. Good and other advantages. Utilizing the method of the present invention can make the dwarfing apple SH38 and SH40 from the root stock realize large-scale and low-cost propagation, thereby obtaining stable properties, uniform tree growth, early flowering and early fruit, saving fertilizer, water, land, and fruit shape. Apples with high index regularity were dwarfed from root stock SH38 and SH40.

Description

technical field [0001] The invention relates to the technical field of apple seedling breeding, in particular to a method for breeding apple dwarfed self-root stock. Background technique [0002] Apple dwarfing self-root stock is based on the principle of plant cell totipotency, using the tissues and organs of apple dwarfing rootstock to form root stock through asexual reproduction method. It is produced by the vegetative body of the mother plant, and its heredity is the same as that of the parent, which can ensure the consistency of rootstock seedlings and fruit seedlings. Apple seedling rootstocks are rootstocks obtained by the propagation method of seed sowing. According to "Mendel's law", seeds have the law of segregation and the law of free assortment. Therefore, the seed rootstock is genetically heterozygous, which in turn affects the tree vigor of apple trees and the overall quality and yield of apple fruits. The dwarfing middle stock of apple also belongs to the ra...

AI Technical Summary

Problems solved by technology

Moreover, due to the small size of the cuttings, the nutrients stored in them are extremely limited, and necrosis is prone to occur during the cutting process.

In terms of production, apple cutting propagation is also difficult to produce on a large scale

Moreover, the cutting seedlings and tissue cultured seedlings are very weak, and they need to be cultivated for another year before they can be used as rootstocks for grafting. The whole cycle is too long

Due to these difficulties, there is no large-scale propagation of SH38 and SH40 self-rooted seedlings through these two methods in production. At present, SH38 and SH40 are still used as intermediate stock seedlings in apple cultivation.

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