GB/T 28991-2020 English PDF

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GB/T 28991-2020: Code of practice on breeding technique of oil-tea camellia
Status: Valid

GB/T 28991: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 28991-2020	149	Add to Cart	3 days	Code of practice on breeding technique of oil-tea camellia	Valid
GB/T 28991-2012	359	Add to Cart	3 days	Breeding technique of oil-tea camellia	Obsolete

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Basic data

Standard ID: GB/T 28991-2020 (GB/T28991-2020)
Description (Translated English): Code of practice on breeding technique of oil-tea camellia
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B61
Classification of International Standard: 65.020.01
Word Count Estimation: 8,860
Date of Issue: 2020-11-19
Date of Implementation: 2020-11-19
Older Standard (superseded by this standard): GB/T 28991-2012
Regulation (derived from): National Standard Announcement No. 26 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 28991-2020: Code of practice on breeding technique of oil-tea camellia

---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.
Code of practice on breeding technique of oil-tea camellia ICS 65.020.01 B61 National Standards of People's Republic of China Replace GB/T 28991-2012 Technical Regulations for Selection and Breeding of Camellia Seeds 2020-11-19 released 2020-11-19 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 28991-2012 "Camellia Camellia Seed Breeding Technology". Compared with GB/T 28991-2012, the main technical changes of this standard are as follows. ---Added the requirements for the selection indexes of Multi-tooth Red Camellia, Southwest Red Camellia, Gaozhou Camellia, and Weining Short Pillar Tea (see Table 1); ---Added other breeding methods (see 4.3); ---Deleted the limit value of acid value in the main indicators for the selection of common oil-tea camellia and related oil species (see Table 1 in the.2012 edition); ---The length of time for the evaluation of clone traits has been reduced from 4 consecutive years to 3 consecutive years (see Table 1 and 4.4.2.2, 4.4.2.3,.2012 edition 6.3); ---Related methods for family determination have been deleted (see 6.2 of the.2012 edition); --- Refinement of the regional test method (see 4.5, Chapter 7 of the.2012 edition). This standard was proposed by the State Forestry and Grassland Administration. This standard is under the jurisdiction of the National Economic Forest Products Standardization Technical Committee (SAC/TC557). This standard was drafted. Research Institute of Subtropical Forestry, Chinese Academy of Forestry. The main drafters of this standard. Yao Xiaohua, Wang Kailiang, Ren Huadong, Lin Ping, Long Wei, Cao Yongqing, Chang Jun, Wang Yaping. The previous versions of the standards replaced by this standard are as follows. ---GB/T 28991-2012. Technical Regulations for Selection and Breeding of Camellia Seeds

1 Scope

This standard stipulates the technical procedures for selection of excellent trees, artificial hybridization, test determination, and regional test for the selection and breeding of Camellia oleifera. This standard applies to the selection and breeding of Camellia oleifera.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB 5009.6 National Food Safety Standard Determination of Fat in Food GB 5009.168 National Food Safety Standard Determination of Fatty Acids in Food GB/T 6001 Technical Regulations for Nursery

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Oil-teacamelia The general term for oil-used species with high oil content in seeds of Camellia and economic cultivation value. Note. Cameliaoleifera (Cameliaoleifera) is the main product, including C.meiocarpa, C.chekiangoleosa, and Vietnamese oil. Tea (C.vietnamensis), Gaozhou Camellia (C.gauchowenesis), Tengchong Safflower Camellia (C.reticulata), Youxian Camellia (C.yuhsienensis), Guangning Safflower Camellia (C.semiserrata), Multi-toothed Black Camellia (C.polyodonta), Southwest Red Camellia (C.pitardi), Weining Short Pillar Tea (C.saluenen- sis) etc. 3.2 Crown yield per unit area The fruiting ability of crown width per unit area is usually expressed by the fruit yield per square meter (m2) of crown width. 3.3 Fresh seed rate The percentage of the quality of the seeds of the fully mature uncracked fruit to the quality of the fresh fruit. 3.4 Dry seed rate The quality of dried seeds (constant weight at 105°C) accounts for the percentage of the quality of fresh fruits. 3.5 Dry seed rate Kernel mass accounts for the percentage of dried seeds mass. 3.6 Kernel oil content The percentage of oil quality in dried seed kernels to kernel quality. ......

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