JP2010259380A - Grafting connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grafting connector for obtaining a high percentage of rootage even when a stem diameter difference between a stock and a scion is large, and in addition, obtaining a percentage of rootage by flat grafting equal to that by whip grafting. <P>SOLUTION: The grafting connector connects a root stock and a scion by holding the cut surface of the root stock and the cut surface of the scion to abut on each other. The grafting connector includes a first cylindrical portion holding the circumferences of the root stock and the scion in a prescribed range in the length direction, including the connection part of the root stock and the scion, and a second cylindrical portion holding the circumference only of the scion above the connection part, and the inner diameter of the second cylindrical part is smaller than that of the first cylindrical part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a grafting joint used in grafting work for joining a saplings to rootstocks in fruit vegetables and the like.

  Grafting is a technology that joins one plant and another plant with artificially created cut surfaces to make one plant, stable growth, shortening the time to harvest, avoiding pest damage, It is carried out for the purpose of improving quality and number of harvests.

  As grafting joints used for holding a joint portion between a rootstock and a hogi in grafting work, various structures have already been proposed, and the following patent documents proposed by the present inventors have been proposed. One example is the grafting joint disclosed in Figs.

By the way, when grafting, the rootstock and hogi are joined together with their cut surfaces aligned. At this time, the rootstock is cut below the stem as much as possible, and the hogi is cut as high as possible above the stem. It is preferable to use it.
By doing in this way, it is because the height of the plant body obtained by grafting can be made low, and the space for accommodating the said plant body can be made small.

However, if the rootstock is cut below the stem and the scion is cut above the stem, the stem diameter of the rootstock and the scion will be greatly different.
In such a case, in the conventional grafting connector, there arises a problem that the rootstock and the hogi cannot be firmly brought into close contact with each other at the cut surfaces.
That is, as shown in FIG. 8, in the conventional grafting connector (A), the inner diameter of the upper part holding the headstock and the lower part holding the rootstock are the same. When the stem diameter of the tree (C) is greatly different, the rootstock (B) is firmly held from the surroundings by the connector (A), but the hogi (C) is hardly held.
For this reason, the cut surfaces of the hogi on the rootstock are not in close contact with each other, and the survival rate is greatly reduced.

Such an inconvenience is that the method of grafting is not a flat joint (see FIG. 8B) in which the cut surface is perpendicular to the length direction of the stem (see FIG. 8B), but an oblique joint in which the cut surface is oblique (FIG. 8 ( By adopting a), it can be slightly reduced. This is because the area of the joint portion is larger in the oblique connection than in the flat connection, and it is easy to energize.
However, the cutting operation of plants used for grafting is usually performed by a person using a razor, and the operation of cutting obliquely is more difficult and skillful than the operation of cutting at right angles. Therefore, the work efficiency of the oblique joint is considerably lower than that of the flat joint.
Therefore, from the viewpoint of work efficiency, flat joints are preferable to diagonal joints, but in the case of conventional joints where the difference in stem diameter between rootstock and scion is large, the survival rate is greatly reduced when flat joints are used. There is a problem of end.

JP 2007-252267 A JP 2008-154484 A

  The present invention has been made to solve the above-described problems of the prior art, and can achieve a high survival rate even when the stem diameter difference between rootstock and scion is large. It is an object of the present invention to provide a grafting joint tool capable of obtaining a survival rate equivalent to that of oblique jointing even when joining.

  The invention according to claim 1 is a jointing tool for grafting that joins the rootstock and the hogi by holding the cutting surface of the rootstock and the cutting surface of the hogi in contact with each other, A first cylindrical portion that holds the periphery of the rootstock and the hogi in a predetermined range in the length direction including the joint portion of the rootstock and the hogi, and a second that holds the periphery of only the hogi above the joint portion The present invention relates to a graft connector, comprising a tubular portion, wherein the second tubular portion has an inner diameter smaller than that of the first tubular portion.

  According to a second aspect of the present invention, the first tubular portion and the second tubular portion are formed of an elastic material having a slit extending over the entire length in the longitudinal direction, and in the longitudinal direction only in a part of the circumferential direction. It is connected, It is related with the joint tool for grafting of Claim 1 characterized by the above-mentioned.

  The invention according to claim 3 relates to the grafting joint tool according to claim 1 or 2, wherein the first cylindrical portion and the second cylindrical portion are displaced from each other in a longitudinal axis.

  The invention according to claim 4 is characterized in that a part of the inner peripheral surface of the first cylindrical portion and the second cylindrical portion is continuous in a straight line in the longitudinal direction. The present invention relates to a graft joint.

  The invention according to claim 5 is characterized in that the second tubular part has a thin part that is thinner than the first tubular part. The present invention relates to a grafting joint.

  The invention according to claim 6 is characterized in that the length in the longitudinal direction of the first tubular portion is longer than the length in the longitudinal direction of the second tubular portion. The present invention relates to a grafting joint.

According to the invention which concerns on Claim 1, in the predetermined range of the length direction containing the connection part of a rootstock and a hogi, the 1st cylindrical part holding the circumference | surroundings of a rootstock and a hogi, Above the said junction part It has a second cylindrical part that holds the circumference of only the hogi, and the inner diameter of the second cylindrical part is smaller than the inner diameter of the first cylindrical part, so that the stem diameter of the rootstock and the hogi Even if they are greatly different, a high survival rate can be obtained.
That is, since the first cylindrical portion can securely hold the rootstock having a large stem diameter and the second cylindrical portion can securely hold the small stock having a small stem diameter, It becomes possible to bring them into close contact with each other, and a high survival rate can be obtained even when the stem diameter difference between rootstock and hogi is large.
In addition, since the cut surfaces of rootstock and hogi can be tightly brought into close contact with each other, even if there is a large difference in stem diameter between rootstock and hogi, a high survival rate equivalent to that of diagonal joints can be achieved even with flat joints. Obtainable.

  According to the invention which concerns on Claim 2, while the said 1st cylindrical part and the said 2nd cylindrical part are formed from the elastic material which has a slit covering the full length of a longitudinal direction, it is long only in a part of circumferential direction. By being connected in the direction, the first cylindrical part and the second cylindrical part can be elastically deformed independently, and it is possible to deal with a wide range of rootstock and hogi of various stem diameter differences It becomes.

  According to the invention according to claim 3, when the first cylindrical portion and the second cylindrical portion are bonded to a rootstock and a hogi having a stem diameter difference due to a shift of a longitudinal axis. In this case, it becomes possible to shift the axis of the rootstock and the hogi and to make the appearance of the joining portion good.

  According to the invention which concerns on Claim 4, the said 1st cylindrical part and the said 2nd cylindrical part have a stem diameter difference because a part of mutual inner peripheral surface is continuing linearly in the longitudinal direction. When joining a certain rootstock and hogi, it becomes possible to join the rootstock and hogi in a straight line by matching a part of the outer peripheral surface of each other, and the appearance of the joined portion is very good It can be.

  According to the invention which concerns on Claim 5, the said 2nd cylindrical part is a 1st cylinder because the said 2nd cylindrical part has a thin part thinner than the said 1st cylindrical part. It becomes easier to elastically deform as compared to the shape portion. Therefore, it is possible to hold a small stem with a weaker force than a rootstock with a large stem diameter, and a graft having an appropriate holding power in two stages according to the stem diameter difference between the rootstock and the panicle. It becomes a joint tool.

  According to the invention which concerns on Claim 6, the length of the longitudinal direction of the said 1st cylindrical part is longer than the length of the longitudinal direction of the said 2nd cylindrical part, Therefore In a 1st cylindrical part, it is a rootstock The joining part of the sword is held in a long range, and in the second cylindrical part, the sword is held in a short range, and a reliable joining can be obtained and the joining tool should be made compact. Is possible.

It is a perspective view of the joint tool for grafting concerning this invention. It is a figure which shows the joining tool for grafting concerning this invention, Comprising: (a) is a front view, (b) is AA sectional drawing, (c) is a rear view, (d) is a top view. It is a figure which shows the state in which the operator is holding the joint tool for grafting which concerns on this invention with the finger | toe. It is a figure which shows the state which joined the rootstock and the hogi using the joining tool for grafting concerning this invention, Comprising: (a) is a general view, (b) is a principal part enlarged view. It is sectional drawing which shows the state which joined the rootstock and the hogi using the joining tool for grafting concerning this invention, Comprising: (a) shows the case of diagonal joining, (b) has shown the case of flat joining. . It is an external view which shows the junction part vicinity of the plant body grafted using the joining tool for grafting concerning this invention. It is sectional drawing which shows the example of a change of the joint tool for grafting concerning this invention, Comprising: (a) is not on the longitudinal center axis | shaft of a 1st cylindrical part and a 2nd cylindrical part, but is on the same straight line. (B) shows that the longitudinal axis of the first cylindrical part and the second cylindrical part are displaced, but a part of the inner peripheral surface is not continuous linearly in the longitudinal direction. . It is sectional drawing which shows the state which joined the rootstock and the hogi using the conventional joining tool for grafting, Comprising: (a) shows the case of diagonal joining, (b) has shown the case of flat joining.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a grafting tool according to the invention will be described with reference to the drawings.
1 and 2 are views showing a grafting tool according to the present invention, in which FIG. 1 is a perspective view, FIG. 2A is a front view, FIG. 2B is a cross-sectional view along AA, and FIG. Is a rear view, and (d) is a plan view.
The jointing tool for grafting (1) according to the present invention is a jointing tool for grafting that joins a rootstock and a headwood by holding the cutting surface of the rootstock and the cutting surface of the headstock in contact with each other. And it is provided with the 1st cylindrical part (2) located below, and the 2nd cylindrical part (3) located above.

A 1st cylindrical part (2) is a part holding the circumference | surroundings of both a rootstock and a hogi in the predetermined range of the length direction containing the junction part of a rootstock and a hogi.
A 2nd cylindrical part (3) is a part holding the circumference | surroundings of only a hogi above the junction part of a rootstock and a hogi.
The first cylindrical portion (2) and the second cylindrical portion (3) are integrally formed of an elastic material (so-called elastomer) such as rubber or soft synthetic resin.

The inner diameter of the second cylindrical portion (3) is smaller than the inner diameter of the first cylindrical portion (2).
Thereby, a rootstock with a large stem diameter can be reliably held in the first cylindrical portion (2), and a safflower with a small stem diameter can be reliably held in the second cylindrical portion (3).

  The inner diameter difference between the first tubular portion (2) and the second tubular portion (3) can be set as appropriate according to the type of plant to be applied, and is not particularly limited. For example, the first tubular portion The inner diameter of the portion (2) can be set to φ1.7 to 2.0 mm, and the inner diameter of the second cylindrical portion (3) can be set to φ1.2 to 1.4 mm.

A slit is formed in the first cylindrical part (2) and the second cylindrical part (3) over the entire length in the longitudinal direction. Hereinafter, the slit formed in the first cylindrical portion (2) is referred to as slit (4), and the slit formed in the second cylindrical portion (3) is referred to as slit (5).
When the plant body after grafting grows and the stem diameter becomes thick due to the provision of the slits (4) and (5), the first cylindrical portion (2) and the second cylindrical portion (3) are elastically deformed. Then, the slits (4) and (5) open, and the grafting connector (1) naturally falls off the stem and falls.
As shown in FIGS. 1 and 2A, the slits (4) and (5) are formed on the same straight line in the vertical direction. Thereby, since the slit of a 1st cylindrical part (2) and a 2nd cylindrical part (3) comes to open from the same direction, the joining tool for grafting (1) becomes easy to remove | deviate naturally from a stem.

  The width of the slit (4) and the width of the slit (5) may be the same or different, but in the illustrated example, the width of the slit (5) is smaller than the width of the slit (4). Yes. In this way, even when the stem diameter difference between the rootstock and the hogi is large (when the stem diameter is small), the hogi is prevented from coming out of the slit (5).

The first cylindrical portion (2) and the second cylindrical portion (3) are connected in the longitudinal direction only in a part of the circumferential direction other than the slits (4) and (5). More specifically, the first cylindrical portion (2) and the second cylindrical portion (3) are approximately half the region in the circumferential direction (semicircular arc region) on the opposite side of the slits (4) and (5). Are connected. Hereinafter, the connected part is called a connection part (6).
As described above, the first cylindrical portion (2) and the second cylindrical portion (3) are connected in the longitudinal direction only in a part of the circumferential direction, so that the first cylindrical portion (2) and the second cylindrical portion are connected. The shape portions (3) can be elastically deformed independently. Thereby, it becomes possible to deal with a wide range of rootstock and hogi of various stem diameter differences.

On the outer peripheral surface of the second cylindrical portion (3), a protruding portion (7) protruding outward in the radial direction is provided. The protruding direction of the protruding portion (7) is substantially perpendicular to the position where the slit (5) is provided.
The shape of the protruding portion (7) is not particularly limited, but the example shown in the figure is a rectangular plate shape in front view, and the short side of the rectangle is directed in the vertical direction and the long side is directed in the radial direction.
By providing such a protrusion (7), the operator can easily grasp the graft joint (1) by gripping the protrusion (7) (see FIG. 3). Moreover, it can prevent that the joint tool for grafting (1) rolls by presence of a protrusion part (7). Furthermore, the positions of the slits (5) and (6) can be easily grasped using the protrusion (7) as a mark. These actions can greatly improve the working efficiency of grafting.

  Moreover, although not shown in figure, the support | pillar for providing the cylindrical part extended in parallel with a 2nd cylindrical part (3) in the front-end | tip of a protrusion part (7), and supporting the plant body grafted to this cylindrical part. It is also possible to configure so that the can be inserted.

  A tapered surface (8) extending upward is formed at the upper end portion of the inner peripheral surface of the second tubular portion (3). This taper surface (8) serves as a guide when inserting the hogi from above the second cylindrical portion (3).

The second tubular part (3) has a thin part (9) that is thinner than the first tubular part (2).
The thin-walled portion (9) is formed by partially cutting away the side opposite to the slit (5) on the outer peripheral surface of the second cylindrical portion (3).
By having such a thin-walled portion (9), the second tubular portion (3) can be elastically deformed with a weaker force than the first tubular portion (2). Therefore, it becomes possible to hold a small stem with a small force in the second cylindrical part (3), and hold a rootstock with a large stem diameter with a strong force in the first cylindrical part (2), This is a grafting connector (1) having an appropriate holding force in two stages according to the stem diameter difference between rootstock and hogi.
In addition, you may provide a thin part (9) in the whole outer peripheral surface instead of notching partially the outer peripheral surface of a 2nd cylindrical part (3) like the example of illustration. That is, you may form the whole 2nd cylindrical part (3) thinly compared with a 1st cylindrical part (2).

A tapered surface (10) extending downward is formed at the lower end portion of the inner peripheral surface of the first tubular portion (2). The tapered surface (10) serves as a guide when the rootstock is inserted into the first cylindrical portion (2) from below.
In addition, a front-view trapezoidal cut (11) that extends upward is formed from the front to the back at the upper end of the slit (4) of the first tubular portion (2). This notch (11) serves as a guide when inserting the hogi from the second tubular part (3) toward the inside of the first tubular part (2).

The length in the longitudinal direction of the first tubular portion (2) is longer than the length in the longitudinal direction of the second tubular portion (3), specifically, about 2 to 3 times longer. .
Thereby, in a 1st cylindrical part (2), the junction part of a rootstock and a hogi will be held in a long range, and in a 2nd cylindrical part (3), a hogi will be held in a short range, A reliable joint can be obtained and the joint can be made compact.

The first cylindrical part (2) and the second cylindrical part (3) are not aligned on the same axis in the longitudinal direction.
In the case of joining a rootstock having a stem diameter difference and a panicle by joining the longitudinal axes of the first tubular portion (2) and the second tubular portion (3), the rootstock and the pan It becomes possible to join by shifting the axis of the tree, and the appearance of the joined part can be made favorable.

More specifically, as shown in FIG.2 (b), as for a 1st cylindrical part (2) and a 2nd cylindrical part (3), a part of inner peripheral surface is a connection part (6) in a longitudinal direction. It is shifted so as to be continuous in a straight line through the inner peripheral surface (continuous without a step).
Thus, there is a stem diameter difference due to the first cylindrical portion (2) and the second cylindrical portion (3) having a portion of the inner peripheral surface that is linearly continuous in the longitudinal direction. In the case of joining the rootstock and the hogi, it becomes possible to join the rootstock (B) and the hogi (C) in a straight line by matching a part of their outer peripheral surfaces (see FIG. 6). The appearance of the part can be made very good.

  However, if the inner diameter of the second cylindrical part (3) is smaller than the inner diameter of the first cylindrical part (2), the length of the first cylindrical part (2) and the second cylindrical part (3) The axial centers of the first cylindrical portion (2) and the second cylindrical portion (3) are not aligned, and the axial centers of the first cylindrical portion (2) and the second cylindrical portion (3) are shifted. However, a part of the inner peripheral surface which is not continuous linearly in the longitudinal direction (see FIG. 7B) is also included in the technical scope of the present invention.

FIG. 4 is a diagram showing a state in which a rootstock (B) and a hogi (C) are joined using the grafting connector (1) according to the present invention, wherein (a) is an overall view, (b) ) Is an enlarged view of the main part.
The jointing tool for grafting (1) according to the present invention holds the joining part of the rootstock (B) and the hotwood (C) by the first tubular part (2), and the ear by the second tubular part (3). It is attached and used so as to hold only the tree (C).

5A and 5B are cross-sectional views of FIG. 4B, in which FIG. 5A shows the case of oblique contact and FIG. 5B shows the case of flat contact.
As shown in the figure, according to the grafting connector (1) according to the present invention, even when the stem diameter difference between the rootstock (B) and the hogi (C) is large, the stem is caused by the first tubular portion (2). The rootstock (B) having a large diameter can be reliably held, and the scion (C) having a small stem diameter can be reliably held by the second tubular portion (3). As a result, the cut surfaces of rootstock (B) and hogi (C) can be firmly brought into close contact with each other, whether diagonally or flatly joined. Even when the stem diameter difference is large, a high survival rate can be obtained.

Hereinafter, the effect of the present invention will be made clearer by showing Examples and Comparative Examples of the graft joint according to the present invention. However, the present invention is not limited to the following examples.
Example 1
As an embodiment, using the grafting joint according to the present invention (see FIG. 2, the inner diameter of the first cylindrical part: φ1.5 mm, the inner diameter of the second cylindrical part: φ1.2 mm) went. As a comparative example, the same kind of eggplant grafting was performed using a commercially available graft connector (trade name: Wiz 17, inner diameter φ1.7 mm) in which the inner diameter of the cylindrical portion was formed straight (same diameter). For the examples and comparative examples in which the hogi was on the 10th day after sowing, and the rootstock was on the 14th day after sowing, the contact part of the rootstock and the hogi became active 10 days after the grafting date. Investigate whether or not. Two types of grafting methods were used, diagonal and flat.
The results of Examples are shown in Table 1, and the results of Comparative Examples are shown in Table 2. The numerical values in the table indicate stem diameters (mm), ○ indicates those that have been entrapped, and × indicates those that have not been entrapped.

(Example 2)
As an embodiment, using a grafting joint according to the present invention (see FIG. 2, the inner diameter of the first cylindrical part: φ1.7 mm, the inner diameter of the second cylindrical part: φ1.2 mm), went. As a comparative example, the same kind of eggplant grafting was performed using a commercially available graft connector (trade name: Wiz 17, inner diameter φ1.7 mm) in which the inner diameter of the cylindrical portion was formed to be straight (same diameter). For the examples and comparative examples in which the hogi was on the 11th day after sowing and the rootstock was on the 15th day after sowing, the contact part of the rootstock and the hogi became active after 6 days of the grafting. Investigate whether or not. The method of grafting was flat.
Table 3 shows the results of Examples and Comparative Examples. The meanings of numerical values and symbols in the table are the same as those in Tables 1 and 2.

As shown in Tables 1 to 3, in the condition where the stem diameter difference between rootstock and hogi is large, in the case of diagonal joining, both the grafting joints of Example and Comparative Example have a high survival rate (100%). As shown, in the case of flat welding, the survival rate of the connector of the comparative example was as low as 60 to 70%, whereas the survival rate of the connector of the example was as high as 90% or more.
From these results, according to the grafting connector according to the present invention, when the stem diameter difference between the rootstock and the scion is large, it is confirmed that a high survival rate can be obtained not only by oblique but also by flat jointing. It was.

(Example 3)
Using the same grafting connector according to the present invention as in Example 2, grafting of eggplant seedlings was performed. Hogi and rootstock used the 15th day after sowing.
6 days after the grafting date, it was examined whether or not the contact part of the rootstock and hogi was alive. The method of grafting was flat.
The results are shown in Table 4. The meanings of numerical values and symbols in the table are the same as those in Tables 1 and 2.

As shown in Table 4, under the conditions that the stem diameters of the rootstock and the hogi are substantially the same, the survival rate of the connector of the example in the case of flat contact was 100%.
From this result, according to the grafting connector according to the present invention, it was confirmed that it was possible to obtain a high survival rate even when the stem diameters of the rootstock and the scion were substantially the same.

  The grafting joint according to the present invention is used, for example, when grafting fruit and vegetables such as eggplant, tomato, watermelon, cucumber, apple, and grape. It can be suitably used when it is large.

DESCRIPTION OF SYMBOLS 1 Jointing tool 2 1st cylindrical part 3 2nd cylindrical part 4 Slit formed in 1st cylindrical part 5 Slit 6 formed in 2nd cylindrical part 1st cylindrical part and 2nd cylindrical form Connecting portion 7 Protruding portion 8 Tapered surface 9 Thin portion 10 Tapered surface 11 Cut B Rootstock C Hogi

Claims (6)

A grafting joint for joining the rootstock and the hogi by holding the cutting face of the rootstock and the cutting surface of the hogi in contact with each other,
A first tubular portion that holds the periphery of the rootstock and the hogi in a predetermined range in the length direction including the joint of the rootstock and the hogi;
It has a second cylindrical part that holds the circumference of only hogi above the joint part,
The grafting tool according to claim 1, wherein an inner diameter of the second cylindrical portion is smaller than an inner diameter of the first cylindrical portion.   The first cylindrical portion and the second cylindrical portion are formed of an elastic material having a slit extending over the entire length in the longitudinal direction, and are connected to the longitudinal direction only in a part of the circumferential direction. The jointing tool for grafting according to claim 1.   The grafting joint tool according to claim 1 or 2, wherein the first cylindrical portion and the second cylindrical portion are displaced from each other in a longitudinal axis.   4. The graft joint according to claim 3, wherein a part of an inner peripheral surface of the first cylindrical portion and the second cylindrical portion is linearly continuous in the longitudinal direction.   The grafting joint tool according to any one of claims 2 to 4, wherein the second tubular portion has a thin-walled portion that is thinner than the first tubular portion.   The jointing tool for grafting according to any one of claims 1 to 5, wherein a length in a longitudinal direction of the first tubular portion is longer than a length in a longitudinal direction of the second tubular portion.

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