How to distinguish true and false grafted seedlings

Grafting is one of the main methods for breeding seedlings. However, in the market of seedlings, grafting seedlings with seedlings often occurs. Now some of the tricks used by counterfeiters are described below.

Fake grafted seedlings

The rootstock of false rootstocks is the basis for the grafting of trees, which determines the roots of the seedlings. For example, the commonly used rootstock for grafting peach is peach and peach. It grows strongly and has strong resistance. In order to save money and save time, some producers use home-grown peaches as their rootstocks. Although they can grow seedlings after being grafted, their quality is poor due to their close relatives.

The scion of bad new seedlings is generally purchased from scientific research units, and the price is relatively expensive. Some people replace them with species with similar names, similar appearances or similar maturity. Some spend money to buy new varieties of scion, but it is not the use of autumn shoots, or axillary buds on the shoots are also used in grafting, the quality is greatly reduced.

The artificial falsification means that after the anvil is cut at the grafting site of the nursery seedlings, a budding knife is used to deeply form a rectangle, shield or "T" shaped scar around the uppermost lateral bud, and the joint graft heals. The lateral buds grow into plants and then the grafted shoots are formed. Some directly grafted into seedlings from the seedlings of this nursery; some of them are grafted with a fine mother tree scion, but there is no survival from the shoots, so a bud is selected to grow seedlings near the grafting point.

Identification of true and false grafted seedlings

The grafted seedlings differed from the grafted grafts in that they had grafted interfaces, and the grafted grafts were seedlings. High-quality grafted wounds heal tightly. Grafted seedlings had callus at the interface, and grafted V-shaped callus was true grafted seedling. In addition, the "V" shaped internal tip protrudes more outwardly than the outside, and the inside and outside colors are different, and the lower end of the "V" character forms an acute angle with no clipping-like crossing phenomenon. The upper part of the interface is significantly thicker than the lower part. Poorly grafted seedlings are not tightly connected and are difficult to survive after planting. The "V"-shaped callus of the fake grafting seedling has the same internal and external points as the outside. The inside and outside colors are the same. The "V" shape sometimes has a scissors-like cross line at the lower end, and the interface is as thick as the top and bottom or fine and thick at the bottom.

From the appearance of the difference between the grafted seedling bud body is full round, the rootstock and scion's stomatal, skin color, the length of the section is obviously not the same. For example, if the grafted seedlings of peach trees fall out of the winter, the top of the seedlings will be red and green, and the top buds will be large and blunt. Yangmei Grafting seedling leaves dark green color, internodes short, seedlings slightly oblique students, branches less, the apical dominance is not obvious, the top new shoots are green. There were many wrinkles on the grafted buds, and the upper and lower parts of the interface were the same as the teeth, lenticels, skin color, and bud ridges. The buds were thin and thin and pointed. If chestnut seedlings do not fall off in winter in Hunan, the dry skin of seedlings is dark brown and the top buds are not full.

The difference from the branches is generally that the mature mother tree is used for the grafting of the scions, with many branches and large opening angles; while the seedlings are strong due to their vitality and apical dominance, the new branches taken upright are erect and the angle of opening is small.

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