GB/T 28991-2020Code of practice on breeding technique of oil-tea camellia (English PDF)

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).

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 document. 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.