Region 6: Virtual Seedling Referee Hemp, Cannabis sativa Leanne Duncan Canadian Food Inspection Agency-Seed Science and Technology Section June 2019 Purpose This referee is designed to assist in identification of areas for improvement in
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Presentation Transcript
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Region 6: Virtual Seedling Referee Hemp, Cannabis sativa Leanne Duncan
Canadian Food Inspection Agency-Seed Science and
Technology Section
June 2019<br>
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Purpose This referee is designed to assist in identification of areas for improvement in the method used for testing and to provide a training opportunity for analysts.<br>
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Who Participated?<br>
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What Germination Experience Was Indicated?<br>
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What Rules Were Used?<br>
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Rules Comparison AOSA MISCELLANEOUS AGRICULTURAL AND HORTICULTURAL
Boraginaceae, borage family – borage; Cannabaceae, hemp family – hemp
Dichondraceae [Convolvulaceae], dichondra family – dichondra
Lamiaceae, mint family – balm, catnip, rosemary, sage, summer savory, sweet basil, sweet marjoram, thyme; Pedaliaceae, benne family – sesame
Rosaceae, rose family – little burnet; Valerianaceae [Caprifoliaceae], valerian family – cornsalad
GENERAL DESCRIPTION
Seedlings are considered normal if they possess those essential structures that are indicative of its ability to produce a plant under favorable conditions.
ABNORMAL SEEDLING DESCRIPTION
Cotyledons:
less than half of the original cotyledon tissue remaining attached.
less than half of the original cotyledon tissue free of necrosis or decay.
Epicotyl:
missing (may be assumed to be present if the cotyledons are intact).
Hypocotyl:
malformed, such as markedly shortened, curled or thickened.
deep open cracks extending into the conducting tissue.
watery.
Root:
none
missing or stubby primary root with weak secondary or adventitious roots M&P 4.14.5 Cannabaceae, Hemp Family
Cannabis sativa, hemp
General Description
Seedling type: Epigeal dicot.
Food reserves: Cotyledons which expand and become leaf-like and photosynthetic.
Shoot system: The hypocotyl elongates carrying the cotyledons above the media surface. The epicotyl usually does not show any development within the test period.
Root system: A primary root with root hairs; secondary roots may occasionally develop within the test period.
Abnormal Seedling Description
Cotyledons:
less than half of the original cotyledon tissue remaining attached.
less than half of the original cotyledon tissue free of necrosis or decay.
Epicotyl:
missing (may be assumed to be present of the cotyledons are intact).
Hypocotyl:
malformed, such as markedly shortened, curled or thickened.
deep open cracks extending into the conducting tissue.
watery.
Root:
none.
missing or stubby primary root with weak secondary or adventitious roots.
Notes:
None<br>
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Results<br>
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WHERE WERE THE DIFFICULTIES?<br>
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Photo No 7<br>
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Photo No 8<br>
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Photo No 15 NORMAL<br>
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Acknowledgement Thank you to Tanya Neudorf for taking and editing all photos for this referee!
