JP2754327B2 - Seedling grafting tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a grafting tool for seedlings. One of the grafting methods for various plants such as tomato, eggplant, pepper, and melon is an oblique joining method. In this diagonal joining method, a stock and a scion are cut diagonally, and the scion is supported on the stock in a state where both cut surfaces are aligned, and the scion is grafted to the stock. Is the way. A grafting tool for supporting the scion to the stock is used for the diagonally mating graft. The present invention relates to the improvement of such a grafting tool.

[0002]

2. Description of the Related Art Conventionally, as a grafting tool as described above,
A cut line extending from an upper end surface to a lower end surface is provided on an elastic cylindrical body made of synthetic resin, and at least one of the upper end surface and the lower end surface is formed as an inclined cut surface corresponding to a graft angle. (Act No. 4-6530), an elastic cylindrical body made of plastics is provided with a crack extending from an upper end surface to a lower end surface, and an inner peripheral upper end portion and an inner peripheral lower end portion of the elastic cylindrical body are respectively directed outward. The elastic tubular body is provided with an attachment portion to a support on the outer periphery of the elastic tubular body (actually open flat 4-11).
3547) has been proposed.

However, such conventional grafting tools include:
There is a disadvantage that rooting from the scion is often found in the graft. In a conventional grafting tool, the inner periphery of the grafting tool is in close contact with the outer periphery of the stock or scion at the grafted portion,
Roots often emerge from the scion due to lack of ventilation and over-humidification. When the roots of the raised scions come into contact with the soil, the rootstock absorbs nutrients and water from the roots of the rootstocks, and the scions absorb nutrients and moisture from the roots of the scions and grow as if they were independently. This makes it impossible to achieve the original purpose of grafting, which makes use of the characteristics of rootstocks, and allows the invasion of disease. Therefore, in general, when a rooting from a scion is found in a farmhouse, it is a fact that the root is cut off one by one, but such a work is very troublesome.

[0004]

A problem to be solved by the present invention is that rooting from a scion is often found in a grafted part in a conventional grafting tool.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to a grafting tool for seedlings, which is used for grafting a scion to a rootstock by an oblique joining method, wherein the elastic tubular body has an upper end surface to a lower end surface. A cutting line or a notch portion extending over the elastic tubular body, and a communication groove portion is formed on the inner periphery of the elastic tubular body.

In the present invention, the material of the elastic tubular body is not particularly limited as long as it has elasticity and therefore has a restorative holding force sufficient to support the scion to the stock. Generally, various synthetic resins such as a vinyl chloride resin, a fluorine resin, and an ethylene resin can be used as a material of the elastic tubular body.

[0007] The elastic tubular body is provided with a cut line or a cutout from the upper end surface to the lower end surface. The cut line or notch is usually provided linearly along the axis of the elastic tubular body, but may be provided diagonally.

[0008] A communication groove is formed on the inner periphery of the elastic cylindrical body. The communication groove portion is formed between the upper end surface and the lower end surface, between the upper end surface or the lower end surface and the cut line or the notch portion, between the cut line and the cut line, or the notch on the inner periphery of the elastic cylindrical body. It is a groove provided between the portion and the notch and communicating with the outside. Such a communication groove portion is formed by indenting one or two or more elongated concave portions in the inner periphery of the elastic cylindrical body, for example, in a linear, spiral, or wavy shape, and is independent of the inner periphery of the elastic cylindrical body. The protrusions are formed as a result by projecting the plurality of protrusions in a staggered shape, for example.

In the present invention, the elastic tubular body is preferably transparent or translucent. This is because at the time of grafting work, the joined state between the obliquely cut surface of the stock and the obliquely cut surface of the scion can be visually observed from outside. It is preferable that the communication groove communicates from the upper end surface to the lower end surface of the elastic cylindrical body. In particular, it is preferable that the concave portion forming the communication groove is formed in a straight line along the axis. This is because it is excellent in air permeability and water permeability.

It is preferable that the elastic cylindrical body is formed so that the inner peripheral upper end portion and the inner peripheral lower end portion are respectively divergent toward the outside. Grafting work is usually performed by inserting an elastic tubular body from the upper side into the outer periphery of the rootstock and inserting the scion from the upper side into the inner periphery of the elastic tubular body, but it is convenient for such insertion and insertion work. This is to prevent the stock and scion from being damaged during insertion and insertion.

Further, it is preferable that a guide marker indicating a graft angle is provided on the outer peripheral side surface of the elastic cylindrical body. This is because the above-described grafting operation provides convenience, and by performing the grafting operation along the guide markers, the oblique cut surface of the stock and the oblique cut surface of the scion can be more reliably joined. Such a guide marker can be formed by projecting or depressing integrally with the elastic tubular body when the elastic tubular body is molded, and a tape is adhered or printed on the outer peripheral side surface of the molded elastic tubular body. Can be formed.

[0012]

According to the present invention, the elastic cylindrical body has a communication groove formed on the inner periphery thereof. The graft is held between the rootstock and the scion by an elastic tubular body to support the scion on the rootstock.At this time, the communication groove ensures air permeability in the graft, and Since it is prevented from becoming excessively moist, rooting from the scion at the grafted portion can be prevented, and as a result, a grafted seedling excellent in growth can be obtained.

[0013]

FIG. 1 is a perspective view showing an embodiment of the present invention as viewed obliquely from the upper front, and FIG. 2 is a rear view showing the same embodiment as FIG. The short elastic cylindrical body 11 formed of a transparent synthetic resin has a through hole 21 in the axis thereof, and the through hole 21 is formed along the axis of the elastic cylindrical body 11 along its upper end surface 3.
A total of eight communication grooves 51 are formed from 1 to the lower end surface 41, and the through holes 21 except for the communication grooves 51 are formed.
Is formed to have a slightly smaller diameter than the stock and the scion, so that the stock and the scion to be inserted into the through hole 21 are held by the elastic cylindrical body 11 with the restoring force. .

One side surface (the front surface in FIG. 1) of the elastic cylindrical body 11
Linearly along the axis from the upper end face 31 to the lower end face 4
1, a coloring tape 71 is obliquely adhered to the outer peripheral side surface of the elastic tubular body 11 on the back side of the cutting line 61 as a guide marker indicating a graft angle.

FIG. 3 is a longitudinal sectional view showing another embodiment of the present invention, and FIG. 4 is a front view showing the same embodiment as FIG. The short elastic tubular body 12 formed of a translucent synthetic resin has a through hole 22 in the axis thereof, and a plurality of independent protrusions 52a are protruded from the peripheral surface of the through hole 22. The through-hole 22 is formed with a communicating groove 52 which is consequently intermingled. The through-hole 22 except for the communicating groove 52 is the same as that of the embodiment shown in FIGS. On one side surface (the front surface in FIG. 2) of the elastic tubular body 12, there is provided a cutout portion 62 extending linearly along the axis from the upper end surface 32 to the lower end surface.

FIG. 5 is a longitudinal sectional view showing still another embodiment of the present invention, and FIG. 6 is a plan view showing the same embodiment as FIG. The short elastic cylindrical body 13 formed of a transparent synthetic resin has a through hole 23 in the axis thereof, and the through hole 23 extends from the upper end surface 33 to the lower end surface 43 along the axis of the elastic cylindrical body 13. A total of four communication groove portions 53 are formed over. The inner periphery of the elastic cylindrical body 13, that is, the upper end portion 23a and the lower end portion 23b of the through hole 23 are formed so as to expand toward the outside, respectively, except for the communication groove 53, the upper end portion 23a, and the lower end portion 23b of the through hole 23. The through-hole 23 in the portion is the same as in the case of the embodiment shown in FIGS. As in the case of the embodiment shown in FIGS. 1 and 2, the elastic tubular body 13 is provided with a cut line 63 and a guide marker (not shown).

Using the following four kinds of grafting tools, a grafting test of tomato was performed by an oblique joining method. Example 1: The grafting tool described above with reference to FIGS. 1 and 2 Example 2: The grafting tool described above with reference to FIGS. 5 and 6 Comparative Example 1: The grafting tool described above with reference to Japanese Utility Model 4-6530 Comparative Example 2: Japanese Utility Model 4- Grafting tool as described above for 113535

LS-89 was used as a rootstock variety, and Momotaro (manufactured by Takii Seed Co., Ltd.) was used as a scion variety. After raising seedlings in a plug tray for 20 days, 2.5 leaves were developed and the plant height was about 6 cm. Was cut at an angle of 30 degrees at the upper part of the cotyledon, and 200 pieces were grafted in each case. After grafting, they were cured in a chamber for 5 days under the conditions shown in Table 1 below.

[0019]

[Table 1]

At the end of the curing or 20 days after the completion of the curing, the number of roots grafted, the survival rate, the rate of seedling formation and the T / R rate were investigated by the following methods. The results are shown in Table 2. Number of grafted roots: At the end of curing, 100 grafted seedlings were visually inspected with the grafting tool removed and the length of the grafted roots was 1 cm or more (books). With respect to 100 grafted seedlings, the rootstock was shaken left and right three times in total with the grafting tools attached, and the number of grafted seedlings that could not be obtained was investigated (%). The grafted seedlings from which the scions could not be removed were potted into the No. 3 pot, and thereafter the number of grafted seedlings that grew smoothly for 20 days was investigated, and the ratio to the number of grafted seedlings that were potted was determined (%) T / R Rate: The grafted seedlings that grew successfully in the survey of the rate of adult seedlings were cut into an aboveground part (T) and an underground part (R), and the respective live weights were measured. The average of the calculated ratios was determined as the T / R ratio. A smaller value indicates that the root of the rootstock is a more satisfactory grafted seedling.

[0021]

[Table 2]

[0022]

As is apparent from the above description, the present invention described above has an effect that when a scion is grafted to a rootstock by the diagonal joining method, rooting from the scion at the graft can be prevented. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention as viewed from obliquely above from the front.

FIG. 2 is a rear view showing the same embodiment as FIG. 1;

FIG. 3 is a longitudinal sectional view showing another embodiment of the present invention.

FIG. 4 is a front view showing the same embodiment as FIG. 3;

FIG. 5 is a longitudinal sectional view showing still another embodiment of the present invention.

FIG. 6 is a plan view showing the same embodiment as FIG. 5;

[Explanation of symbols]

11, 12, 13 ... Elastic cylindrical body, 21, 22, 23
... through-hole, 51, 52, 53 ... communication groove, 6
1, 63 ... cut line, 62 ... cutout part, 7
1 ... guide marker

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A01G 1/06

Claims (5)

(57) [Claims] 1. A grafting tool for seedlings, which is used when grafting a scion to a rootstock by a diagonal joining method, wherein a cut line or a cutout extending from an upper end surface to a lower end surface is provided in an elastic tubular body. A grafting tool for seedlings, wherein a communication groove is formed on the inner periphery of the elastic tubular body. 2. The grafting tool for seedlings according to claim 1, wherein the elastic tubular body is transparent or translucent. 3. The grafting tool for seedlings according to claim 1, wherein the communication groove communicates from the upper end face to the lower end face of the elastic tubular body. 4. The grafting tool for seedling according to claim 1, wherein the upper end of the inner periphery and the lower end of the inner periphery of the elastic tubular body are formed to diverge outward. 5. The grafting tool for seedling according to claim 1, wherein a guide marker indicating a grafting angle is provided on an outer peripheral side surface of the elastic tubular body.