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LY/T 1709-2007 English PDF

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LY/T 1709-2007: Technical specification for production of Tagetes erecta seeds
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Basic data

Standard ID LY/T 1709-2007 (LY/T1709-2007)
Description (Translated English) Technical specification for production of Tagetes erecta seeds
Sector / Industry Forestry Industry Standard (Recommended)
Classification of Chinese Standard B62
Classification of International Standard 65.020.20
Word Count Estimation 8,835
Date of Issue 2007-06-04
Date of Implementation 2007-10-01
Quoted Standard GB 2772-1999; GB/T 18247.4-2000
Regulation (derived from) Chinese industry standard filing Notice 2007 No. 9 (No. 93 overall)
Issuing agency(ies) State Forestry Administration
Summary This standard specifies the classification marigold seed quality control principles and indicators, provides for the production of conventional seed selection and planning of nursery, seed harvesting, optimal selection and storage of technical requirements. In addition, the provisions of hybrid (F1-generation) seed production nursery planning, quarantine measures, field management points and seed quality control requirements, as well as parents in hybrid seed production and hybridization of the ratio requirements. This standard applies to marigold seed production and sales.

LY/T 1709-2007: Technical specification for production of Tagetes erecta seeds

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Technical specification for production of Tagetes erecta seeds ICS 65.020.20 B62 People's Republic of China Forestry Industry Standard Marigold seed production technical regulations Released on.2007-06-04 2007-10-01 implementation State Forestry Administration released

Foreword

This standard was proposed by the Chinese Academy of Forestry. This standard is under the jurisdiction of the National Flower Standardization Technical Committee. This standard was drafted. Forestry Institute of China Academy of Forestry. The main drafters of this standard. Sun Zhenyuan, Liu Xiaohui, Zhao Liangjun, Liu Huichao, Han Lei, Ju Guansheng. This standard was first published. Marigold seed production technical regulations

1 Scope

This standard specifies the principles and control indicators for the classification of marigold seed quality, and stipulates the selection and selection of sorghum in conventional seed production. Technical requirements for planning, seed harvesting, selection and storage. In addition, the planning and isolation measures for hybrid (F1 generation) seed production are specified. Application, field management points and seed quality control requirements, as well as parental ratio and hybridization technical requirements in hybrid seed production. This standard applies to the production and sale of marigold seeds.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard. GB 2772-1999 Forest seed inspection procedures GB/T 18247.4-2000 Main flower product grades - Part 4. Flower seeds

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 Raw materials produced by breeders (or breeding units) for the production of other grades of seeds, as determined by the breed committee. By breeder Seeds mixed after single plant selection from the plant. 3.2 Seeds produced directly from the original stock. The first to third generation seeds that are propagated by the breeder (or breeding unit), or by the original species Seeds whose production technical specifications meet the quality standards of the original species are used for further breeding of improved varieties. 3.3 Seeds of the first to third generations that have been propagated from conventional stocks, or hybrids that meet the standards of elite varieties. For breeding and cultivation seed. 3.4 A seed obtained by breeding a parent directly from the original species or once from the original species. 3.5 The same line is used as both a male sterile line and a hybrid seed parent for maintaining the line. Male sterile plants as maternal, heterozygous fertile plants For the male parent, the hybridization is carried out, and the ratio of the heterozygous fertile and the sterile plants of the offspring is 1.1, wherein the fertile plant is used as the breeding father of the dual-purpose system. In this case, the sterile plant is used as a breeding mother of the dual-use line and a female parent of the hybrid.

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