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SN/T 1579-2005: Determination of coconut lethal yellowing phytoplasma
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| SN/T 1579-2005 | English | 319 |
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Determination of coconut lethal yellowing phytoplasma
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SN/T 1579-2005
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Basic data | Standard ID | SN/T 1579-2005 (SN/T1579-2005) | | Description (Translated English) | Determination of coconut lethal yellowing phytoplasma | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | B16 | | Classification of International Standard | 65.020 | | Word Count Estimation | 10,136 | | Date of Issue | 2005-05-20 | | Date of Implementation | 2005-12-01 | | Regulation (derived from) | 2005 Bulletin No. 8 industry standard | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China | | Summary | This standard specifies the plant quarantine in the coconut lethal yellowing phytoplasma quarantine detection methods. This standard applies to plant quarantine in the palm plants (including species of fruit, seedlings and other propagating materials) Coconut lethal yellowing phytoplasma quarantine testing. | SN/T 1579-2005: Determination of coconut lethal yellowing phytoplasma---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.
Determination of coconut lethal yellowing phytoplasma
People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard
Coconut dead yellow phytoplasma detection method
Released on.2005-05-20
Implementation of.2005-12-01
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
Appendix A, Appendix B and Appendix C of this standard are normative appendices.
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard was drafted. Hainan Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China.
The main drafters of this standard. Li Weidong, Li Jiyong, Zhang Ning.
This standard is the first industry standard for entry-exit inspection and quarantine.
Coconut dead yellow phytoplasma detection method
1 Scope
This standard specifies the quarantine test method for the lethal yellowing phytoplasma of coconut in phytosanitary.
This standard applies to the quarantine of palm-killing yellow phytoplasma in palm plants (including breeding materials such as seed, seedlings, etc.) in phytosanitary
Detection.
2 Principle
2.1 Coconut Lethal Yellow Phytoplasma
Scientific name. CoconutLethalYelowingPhytoplasma
Abbreviation. CLYP
Classification status. Prokaryiotes; Tenericute; Molicutes. Phytoplasma
2.2 Host range
2.3 host symptoms
Symptoms of coconut saplings. mainly characterized by yellow leaves and necrosis of the spear and heart.
Symptoms of the tree. the coconuts are shed before ripening; the open or unopened buds are necrotic; the flag leaves turn yellowish brown, then from bottom to top
The chlorotic turns yellow; the spear leaves and the heart rot; the crown collapses; the roots rot.
2.4 Geographical distribution
North America. United States (Florida and Texas), Mexico.
Central America and the Caribbean. Cayman Islands, Bahamas, Cuba, Jamaica, Haiti, Suriname, Dominica, Belize, Hongdu
Russ.
Africa. Ghana, Togo, Nigeria, Benin, Tanzania, Kenya, Mozambique, Cameroon, Mozambique.
2.5 Phytoplasma morphological characteristics
The phytoplasma of the dead yellow phytoliths of the coconut is nearly spherical, elliptical, cylindrical, spheroidal, silky, etc., and they are often in two equal parts.
The cracking state has a size of 0.42 μm to 2 μm, and the longest is a spherical shape of up to 16 μm or more.
2.6 Route of transmission
The artificial pathway allows the phytoplasma to spread over long distances.
2.7 histopathological characteristics
After DAPI staining of plant material tissue infected with phytoplasma, phytoplasma in phloem sieve cells can be directly observed under the microscope.
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