ISO 19824:2017

INTERNATIONAL ISO
STANDARD 19824
First edition
2017-03
Traditional Chinese medicine —
Schisandra chinensis (Turcz.) Baill.
seeds and seedlings
Médecine traditionnelle chinoise — Graines et plants de Schisandra
chinensis (Turcz.) baill.
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Description . 2
4.1 Schisandra chinensis seeds . 2
4.2 Schisandra chinensis seedlings . 3
5 Requirements . 4
5.1 General characteristics . 4
5.2 Schisandra chinensis seed . 4
5.3 Schisandra chinensis seedling . 5
6 Sampling . 5
6.1 Seed sampling . 5
6.2 Seedling sampling . 6
7 Test methods . 6
7.1 1 000-seed weight . 6
7.2 Purity . 6
7.3 Seed width . 6
7.4 Seed viability. 6
7.5 Stratification rate . 6
7.6 Moisture content . 7
7.7 Fungus testing . 7
7.7.1 Preparation of seed . . 7
7.7.2 Preparation of seedling . 7
7.7.3 Test of Alternaria spp. . 7
7.7.4 Test of Fusarium spp. 7
7.8 Nematode testing . 7
7.9 Stem diameter. 7
7.10 Height of stem . 8
7.11 Seedling weight . 8
7.12 Number of lateral roots . 8
8 Test report . 8
9 Packaging, storage and transportation . 8
10 Marking . 8
Annex A (informative) Identification of the Schisandra chinensis seed .10
Bibliography .12
Foreword
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This document was prepared by ISO/TC 249, Traditional Chinese medicine.
iv © ISO 2017 – All rights reserved

INTERNATIONAL STANDARD ISO 19824:2017(E)
Traditional Chinese medicine — Schisandra chinensis
(Turcz.) Baill. seeds and seedlings
1 Scope
This document specifies minimum requirements and test methods for Schisandra chinensis (Turcz.)
Baill. seeds and seedlings.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
International Seed Testing Association (ISTA):2016, International Rules for Seed Testing
International Seed Testing Association (ISTA), Working Sheets on Tetrazolium Testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www.e lectropedia. org/
— ISO Online browsing platform: available at http:// www. iso. org/o bp
3.1
lot
specified quantity of seeds or seedlings that are physically and uniquely identifiable
3.2
primary sample
portion taken from the lot (3.1) during one single sampling action
3.3
composite sample
formed by combining and mixing all the primary samples (3.2) taken from the lot (3.1)
3.4
test sample
portion of the composite sample (3.3) to which one of the test required in this document is applied
Note 1 to entry: The test samples (3.4) may be packed in different materials meeting conditions for specific tests
[e.g. moisture or purity (3.6)].
3.5
sealed
condition whereby a container which contains seeds is closed in such a way that it cannot be opened
to get access to the seed and be closed again without either destroying the seal or leaving evidence of
tampering
Note 1 to entry: This definition refers to the sealing of seed lots, as well as of seed samples.
3.6
purity
weight of pure seed fraction over the total weight of the test sample (3.4) in per cent
Note 1 to entry: The pure seed refers to the species stated by the applicant, or found to predominate in the test,
and includes all botanical varieties and cultivars of that species.
3.7
1 000-seed weight
average weight of every 1 000 pure seeds of a test sample (3.4)
3.8
seed width
largest distance from the side of raphe to its opposite, in millimetre
Note 1 to entry: See Figure 1.
3.9
viability
index to show the potential ability of seed to germinate, or the capability of embryo to live
Note 1 to entry: It is expressed as the percentage of stained seeds in the test sample (3.4).
Note 2 to entry: It is estimated by the method of Topographical Tetrazolium Test.
3.10
stratification rate
percentage of stratified seed, determined by number, in the test sample (3.4)
Note 1 to entry: Stratified seed is the seed with embryos fully grown, endosperm volume expanded, seed coat
longitudinally fissured through the raphe by after-ripening treatment (see Figure 1).
3.11
stem diameter
boundary of aboveground and belowground of the seedling
Note 1 to entry:
...