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Agricultural Industry Standard of the People's Republic of China
NY/T452--2001
Grafted Seedlings
Carambola grafting
Published on August 20, 2001
Implemented on November 1, 2007
Ministry of Agriculture of the People's Republic of China
NY/T452--2001
Appendix B, Appendix C, and Appendix D of this standard are normative appendices, and Appendix A is an informative appendix. This standard was proposed by the State Farm Reclamation Bureau of the Ministry of Agriculture.
This standard is under the jurisdiction of the Technical Committee for Standardization of Tropical Crops and Products of the Ministry of Agriculture. The drafting unit of this standard: Quality Supervision, Inspection and Testing Center for Tropical Crops Seeds and Seedlings of the Ministry of Agriculture. The main drafters of this standard: Zhang Rulian and Yi Xiaoping. 64
1Scope
Carambola grafted seedlings
NY/T452--2001
This standard specifies the definition of carambola (Averrhoa carambola) grafted seedlings, stock conditions and scion requirements, basic requirements for drawing and grading indicators, inspection methods and inspection regulations, grading criteria, packaging, marking and transportation. This standard is applicable to grafted seedlings of various varieties of carambola. 2Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated referenced documents, the latest versions are applicable to this standard. GB9847—1988 Regulations on Plant Quarantine (State Council of the People's Republic of China) Rules for the Implementation of Regulations on Plant Quarantine (Agricultural Part) (Ministry of Agriculture of the People's Republic of China) 3 Terms and Definitions The following terms and definitions apply to this standard. 3.1 Cultivar purity The percentage of seedlings of the specified variety in the total number of samples for inspection. 3.2 Grafting Grafting A method of asexual reproduction in which a grafted seed is grafted onto a rootstock to form a new plant. 3.3 Grafted seedlings Grafted seedlings Seedlings grown by grafting with seedlings as rootstocks and a specified variety as scion. 3.4 Rootstock Rootstock Seedlings that bear the scion during grafting.
Scion wood
The branch or bud grafted onto the stock.
The grafting joint is normal. The wound at the connection between the scion and the stock is healed completely, without any defect, decay, binding or traces. 3.7
Grafted seeiling planted in nittitton bag Seedlings grown in nutrient soil in plastic bags of specific specifications. 6.3
Variety purity (%) = Number of designated species in the sample × 100
Total number of seedlings in the sample
Round the result to the nearest decimal place. The inspection result is recorded in the record form specified in Appendix B. 7.4 Appearance inspection
7.4.1 Seedling height: Use a steel tape measure to measure the vertical distance from the soil surface to the top of the longest new shoot of the seedling. 7.4.2 Stock stem diameter: Use a vernier caliper to measure the diameter 5 cm below the base of the grafting site. 7.4.3 Shoot length: Use a steel tape measure to measure the distance from the base of the longest shoot on the scion to the top. 7.4.4 Shoot stem diameter: Use a vernier caliper to measure the diameter 5 cm above the base of the longest shoot on the scion. 7.4.5 Grafting site height: Use a steel tape measure to measure from the soil surface to the base of the grafting site. The nesting recorder shall record the nesting record in the form specified in Appendix B. 7.5. Seedling epidemic inspection:
NY/T 452--2001
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Seedlings shall comply with quarantine standards, and epidemic inspection shall be carried out in accordance with the relevant provisions of the "Plant Quarantine Regulations" and the "Detailed Rules for the Implementation of the Plant Quarantine Regulations (Agricultural Part)" of the Ministry of Agriculture of the People's Republic of China. 8 Inspection and testing
8.1 Seedling quality inspection shall be carried out in the seedling circle when the seedlings are out of the circle. 8.2 Before the seedlings are put out, the quality shall be inspected by the seed and seedling quality inspection technical department or other units authorized by the department jointly commissioned by the supply and demand parties, and the inspection technical department shall issue a carambola seedling quality inspection certificate. The format of the seedling quality inspection certificate is shown in Appendix C. 8.3 Productive seedlings should have a quality certificate. 9 Grading criteria
Should comply with the provisions of 6.1. If one of the requirements is not met, it is a first-class seedling; if some indicators do not reach the first-class seedlings, they will be judged as second-class seedlings. If all indicators reach the second class, they will be classified as second-class seedlings; if one indicator does not reach the second class seedlings, they will be classified as unqualified seedlings. 10 Packaging, marking, transportation
10.1 Packaging
Seedlings with intact nutrient bags do not need to be packaged and can be transported directly. If the nutrient bag is damaged but the soil ball is intact, it needs to be re-bagged and tied with a cross rope.
10.2 Marking
To prevent the mixing of varieties, the seedlings need to be labeled when they are rounded, see Appendix D, indicating the name of the scion and rootstock, grade, quantity, nursery unit, certificate number and date of drawing. If a truck is carrying more than two varieties at the same time, they should be loaded in order of variety and clearly distinguished. When filling in the label, you should use a non-fading marker.
10.3 Transportation
Strictly prevent heavy pressure, sun and rain during transportation, ensure ventilation, and use covered wagons for transportation. After the seedlings are transported to the destination, they should be placed in a cool place and planted or transplanted as soon as possible.
NY/T 452—2001
A.1 Rootstock
Appendix A
(Informative Appendix)
Variety Characteristics
Common rootstocks Sour carambola, with tall and strong tree vigor, sturdy branches, rapid growth, early maturity, strong adaptability and insect resistance, large fruit, and more seeds. A.2 Commonly used scion varieties
A.2.1 Fragrant honey carambola: Originated from Malaysia, the fruit is oblong, with 5 edges, green when unripe, light green when green-ripe, and waxy yellow when fully ripe. The skin is as thin as paper, translucent, and the flesh is thick. There are 1.5 seeds per fruit on average. The weight of a single fruit is 200g~300g, and the largest fruit can reach 394.5g. The flesh is light yellow, with a lot of juice and very little fiber. A.2.2 Honey sweet carambola: Mainly produced in Taiwan Province. The fruit is high-yielding and high-quality, with an average fruit weight of 168g and the largest of 250g: tender flesh, less fiber, juicy and sweet. It has good adaptability in Guangzhou. A.2.3 Dongguan sweet carambola: introduced from Malaysia in 1983, the tree has medium vigor and strong branching ability. The fruit is very large, weighing 250-350g each, with thick ridges, yellow flesh with a slight green, juicy, sweet, small fruit core and good quality. It has strong adaptability, high and stable yield, and begins to bear fruit 2 years after the grafted seedlings are planted. 68
Variety:
Seedling raising unit:
Number of plants reported for inspection:
Sample plant number
Reviewer (signature):
Appendix B
(Normative appendix)
Quality inspection record form for grafted Yangtang seedlings
Seedling purchasing unit:
Number of plants sampled:
Rootstock stem diameter
Verifier (signature)
Grafting port height
Inspector (signature):
New shoot length
New shoot stem diameter
Inspection date:bzxz.net
NY/T 452-2001
NY/T452—-2001
Inspection unit (official seal):
Seedling unit
Number of seedlings
Inspection results
Inspection opinions
Certificate issuance period
Purity, %
Attached with Ring C
(Normative attachment)
Carambola seedling quality inspection certificate
Seedling purchasing unit
Seedling variety
First-class, %
Certificate validity period
Note; This certificate is in triplicate, one copy each for the seedling raising unit, seedling purchasing unit, and inspection unit. Auditor (signature):
Verifier (signature):
Tester (signature):
First-class,%
Unqualified, %
Name of scion and rootstock
Nursery unit
Certificate number
Issue date
Appendix D
(Normative appendix)
Carambola grafted seedling label
Carambola grafted seedling
Note: The label is made of 150-gauge kraft paper. The label hole is rimmed with metal. Front
Carambola grafted seedling label
Unit: cm
NY/T452—2001
Scion and rootstock name
Seedling raising unit
Certificate number
Issue date
Appendix D
(Normative appendix)
Carambola grafted seedling label
Carambola grafted seedling
Note: The label is made of 150-gauge kraft paper. The label hole is metal-edged. Front
Carambola grafted seedling label
Unit: cm
NY/T452—2001
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