SN/T 1140-2002 English PDF

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SN/T 1140-2002: Methods for quarantine and identification of Heterodera schachtii schmidt
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Basic data

Standard ID: SN/T 1140-2002 (SN/T1140-2002)
Description (Translated English): Methods for quarantine and identification of Heterodera schachtii schmidt
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: B16
Word Count Estimation: 13,145
Date of Issue: 2002-08-02
Date of Implementation: 2003-01-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary: This standard specifies requirements for beet cyst nematode quarantine and identification methods. Standards apply to sugar beet and other Chenopodiaceae and other cruciferous plants and plant propagation material beet roots and soil cyst nematode disease quarantine and identification.

SN/T 1140-2002: Methods for quarantine and identification of Heterodera schachtii schmidt

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for quarantine and identification of Heterodera schachtii schmidt People's Republic of China entry and exit inspection and quarantine industry standards Method for quarantine and identification of sugar beet cyst nematode People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

Appendix B, Appendix C, Appendix D and Appendix E of this standard are normative appendices, and Appendix A is an informative appendix. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Shanghai Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Nanjing Agricultural University. The main drafters of this standard. Yan Longjun, Song Shaozhen, Lin Maosong. This standard was first published Inspection and quarantine industry standards. SN/T 1140-2002 Method for quarantine and identification of sugar beet cyst nematode

1 Scope

This standard specifies the methods for quarantine and identification of sugar beet cyst nematodes. This standard is applicable to the detection of sugar beet cyst nematodes in the roots and diseased soils of sugar beet and other plant and plant propagation materials such as the family Amaranthus and Cruciferae. Epidemic and identification.

2 Principle

In this case, the sex differentiation occurs, the third instar female larva develops into the early larvae of the near gourd shape, the fourth instar male is wormlike, and the fourth instar female larvae change again. For female adults, when the white mature females mate with the males, the worm-like males die. When the females are fully mature, they are called cysts, and the cysts are generally Dropped into the soil from the root surface. The affected beets have increased lateral roots, and the entire root system is cluster-like, with severe lack of functional roots, under sun exposure or drying. The soil is wilting. Beet cyst nematode is a plant-parasitic nematode that harms sugar beet and other amaranth and cruciferous plants (see Appendix A). The protozoan is mainly transmitted by the movement of host plants and diseased soil. Its infection cycle, transmission pathway, host range, biology and morphology The levy is the basis for the quarantine identification method. 3 instruments, appliances 3.1 Fenwick cysts. 3.2 Biological microscope (100 times to 1000 times, with eyepiece micrometer or plotter, monitor, etc.). 3.3 Stereo microscope (10x to 90x, with transmitted light source). 3.4 Heating plate. 3.5 Low speed centrifuge (1000r/min~4000r/min). 3.6 Centrifuge tube (100 mL). 3.7 Slides. 3.8 coverslips. 3.9 Separation sieves (20 cm in diameter, 20-gauge, 60-mesh, 100-mesh, 300-mesh, 500-mesh). 3.10 beaker (500mL, 1000mL). 3.11 Brush. 3.12 puncher. 3.13 Dryer. 3.14 Pick the needle. 3.15 refrigerator. 3.16 filter paper. 3.17 Alcohol lamp. 3.18 Petri dishes. SN/T 1140-2002 ......

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