Abstract Top-insertion grafting method: Pull the bamboo skewer inserted in the rootstock out, then insert the trimmed scion into the hole, with the scion cotyledons and rootstock cotyledons forming a "cross" shape. Approach grafting method: Insert the scion cut into the rootstock stem cut, the two cuts need to fit tightly together, then use a grafting clip
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<p class="cintro"><span>Abstract</span>Top-insertion grafting method: Pull the bamboo skewer inserted in the rootstock out, then insert the trimmed scion into the hole, with the scion cotyledons and rootstock cotyledons forming a "cross" shape. Approach grafting method: Insert the scion cut into the rootstock stem cut, the two cuts need to fit tightly together, then use a grafting clip to secure the joint. Cleft grafting method: Insert the trimmed scion into the cleft, keeping the rootstock and scion surfaces level, then use a grafting clip for securing.</p>
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<p><strong>I. Vegetable Grafting Techniques</strong></p><p>1. Top-insertion grafting method</p><p>(1) Removing the rootstock growing point: A blade or bamboo skewer can be used to cut off the true leaves and growing point of the rootstock.</p><p>(2) Cutting the rootstock: A bamboo skewer with the same thickness as the scion hypocotyl and a wedge-shaped tip can be used, then insert it at a downward slant from the main vein of one cotyledon of the rootstock toward the other cotyledon to a depth of 1cm; generally, it is best if the outer epidermis is not pierced and the bamboo skewer is faintly visible.</p><p>(3) Cutting the scion: At 1-1.5cm below the cotyledon node, use a blade to cut it into a wedge-shaped face with a bevel length of 1cm.</p><p>(4) Grafting: Pull the bamboo skewer inserted in the rootstock out, then insert the trimmed scion into the hole, with the scion cotyledons and rootstock cotyledons forming a “cross” shape.</p><p></p><p>2. Approach grafting method</p><p>(1) Removing the rootstock growing point: A blade or bamboo skewer can be used to cut off the true leaves and growing point of the rootstock.</p><p>(2) Cutting the rootstock: At 0.5-1cm below the cotyledons, use a blade to make a downward slanting cut, with the depth needing to reach 1/2 of the stem thickness.</p><p>(3) Cutting the scion: Make an upward slanting cut at the corresponding part of the scion, generally with the depth reaching 1/2 of the stem thickness, and the cut length the same as the rootstock cut.</p><p>(4) Grafting: Insert the scion cut into the rootstock stem cut, the two cuts need to fit tightly together, then use a grafting clip to secure the joint.</p><p>(5) Root cutting: After grafting, plant the rootstock and scion together into a nutrient pot, about 1cm apart, with the joint about 3cm from the soil surface; wait 7 days for the joint to heal, then cut off the scion root; generally after 10-15 days, the grafting clip can be removed.</p><p></p><p>3. Cleft grafting method</p><p>(1) Removing the rootstock growing point: A blade or bamboo skewer can be used to cut off the true leaves and growing point of the rootstock.</p><p>(2) Cutting the rootstock: From between the 2 cotyledons, split the young stem downward, with a length of 1-1.5cm.</p><p>(3) Cutting the scion: Cut the scion young stem into a wedge shape, with a cut surface length of 1-1.5cm.</p><p>(4) Grafting: Insert the trimmed scion into the cleft, keeping the rootstock and scion surfaces level, then use a grafting clip for securing.</p><p></p><p><strong>II. Suitable Grafting Time for Vegetables</strong></p><p>1. Cucurbits: When the cotyledons are fully expanded and when the true leaves appear, this is the suitable grafting period.</p><p>2. Eggplant: When the rootstock has grown 3-4 true leaves and the scion has grown 2-3 true leaves, grafting requires retaining 1 true leaf.</p><p>3. Tomato: When the rootstock has grown 4-5 true leaves and the scion has grown 2-3 true leaves, grafting requires retaining 1 true leaf.</p>
SummaryTop insertion grafting: pull the bamboo skewer inserted in the rootstock out, then insert the prepared scion into the hole, so that the scion cotyledons and the rootstock cotyledons form a "cross" shape. Approach grafting: fit the cut on the scion into the cut on the rootstock stem; the two cuts must be tightly joined, then use a grafting clip to secure the joint. Cleft grafting: insert the prepared scion into the cleft, keeping the surfaces of the rootstock and scion flush, then secure with a grafting clip.
I. Grafting techniques for vegetables
1. Top insertion grafting
(1) Removing the rootstock growing point: use a blade or bamboo skewer to cut off the true leaves and growing point of the rootstock.
(2) Cutting the rootstock: use a bamboo skewer of the same thickness as the scion hypocotyl, with its tip cut into a wedge shape, then insert it obliquely downward from the main vein of the cotyledon on one side of the rootstock toward the cotyledon on the other side to a depth of 1cm; generally it is best if the outer skin is not split and the bamboo skewer is faintly visible.
(3) Cutting the scion: at 1-1.5cm below the cotyledon node, use a blade to cut it into a wedge-shaped surface with a bevel length of 1cm.
(4) Grafting: pull the bamboo skewer inserted in the rootstock out, then insert the prepared scion into the hole, so that the scion cotyledons and the rootstock cotyledons form a "cross" shape.
2. Approach grafting
(1) Removing the rootstock growing point: use a blade or bamboo skewer to cut off the true leaves and growing point of the rootstock.
(2) Cutting the rootstock: at 0.5-1cm below the cotyledons, use a blade to make a downward oblique cut, with a depth reaching 1/2 of the stem thickness.
(3) Cutting the scion: make an upward oblique cut at the corresponding part of the scion, generally with a depth reaching 1/2 of the stem thickness, and the cut length the same as the rootstock cut.
(4) Grafting: fit the cut on the scion into the cut on the rootstock stem; the two cuts must be tightly joined, then use a grafting clip to secure the joint.
(5) Root cutting: after grafting, plant the rootstock and scion together into a nutrient pot, about 1cm apart, with the joint about 3cm above the soil surface; wait 7 days for the joint to heal, then cut off the scion root; generally after 10-15 days, the grafting clip can be removed.
3. Cleft grafting
(1) Removing the rootstock growing point: use a blade or bamboo skewer to cut off the true leaves and growing point of the rootstock.
(2) Cutting the rootstock: from between the 2 cotyledons, split the young stem downward to a length of 1-1.5cm.
(3) Cutting the scion: cut the young stem of the scion into a wedge shape, with a cut surface length of 1-1.5cm.
(4) Grafting: insert the prepared scion into the cleft, keeping the surfaces of the rootstock and scion flush, then secure with a grafting clip.
II. Suitable grafting times for vegetables
1. Cucurbits: when the cotyledons are fully expanded and when the true leaves appear, this is the suitable grafting period.
2. Eggplant: when the rootstock has grown 3-4 true leaves and the scion has grown 2-3 true leaves, grafting requires retaining 1 true leaf.
3. Tomato: when the rootstock has grown 4-5 true leaves and the scion has grown 2-3 true leaves, grafting requires retaining 1 true leaf.