GB/T 16620-2023Terminology of forest tree breeding and seed management (English PDF)

1 Scope

This document defines common terms used in forest tree breeding and tree seed management:

This document is applicable to the fields of production, scientific research, teaching and management of the forest seed industry:

2 Normative references

This document has no normative references:

3 Basic terms

3:1 tree species

There are significant differences in morphological characteristics, and there are reproductively isolated woody plants:

Note: The most basic unit in the classification system of woody plants is the basic biological basis for a species to be established in classification:

3:2

The area occupied by all individuals of each tree species in nature:

Note: According to the distribution area, it can be divided into continuous distribution area and discontinuous distribution area; according to the origin, it can be divided into natural distribution area and cultivated distribution area; according to distribution space, it can be divided into horizontal distribution area area and vertical distribution area:

3:3

A state in which the distribution of a species or subspecies of taxa is connected in one piece without discontinuity:

3:4

The distribution area of a species or a taxonomic unit below a species is in a discontinuous state:

3:5 forest tree seed

The general term for the sexual reproductive organs of forest trees and the sowing materials in forestry production:

Note: Including real seeds (such as pines, birches), fruits (such as samara, nuts, etc:), parts of fruits (such as walnuts, neem, etc:), parts of seeds (such as

Ginkgo, Magnolia) and seeds formed by apomixis (such as citrus, etc:):

3:6

Seed origin seedsource

The original collection location of the seeds:

3:7 seed zone seedzone

In the distribution area of tree species, the ecological conditions and genetic characteristics of forest trees are basically similar to the geographical unit:

Note: The basic unit of species is used: