testing referee results Southwest Region 4 2016 by Michael Aberle RST Ransom Seed Laboratory Tetrazolium testing referee results 2016 40 participants 30 laboratories 35 of the respondents were from the West coast region 4 ID: 550725
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Slide1
Tetrazolium testing referee resultsSouthwest Region 42016
by Michael
Aberle
RST
Ransom
Seed LaboratorySlide2
Tetrazolium testing referee results2016
40 participants
30 laboratories
35%
of the respondents were from the West coast region 4
20 photographs
8 plant families Slide3
1. BLUE FLAX
Linum
lewisii
Linaceae
98% viable
Respondents that answered viable:
Concern that the radicle was damagedSlide4
2. BLUE
FLAX
Linum
lewisii
Linaceae
100% non-viableSlide5
3. BLUE
FLAX
Linum
lewisii
Linaceae
98% non-viable
Respondents that answered viable:
Concern that a membrane covered the unstained partsSlide6
4
. CACTUS
Cactaceae
100% non-viableSlide7
5
. CACTUS
Cactaceae
95%
viable
Respondents that answered non-viable:
Concern that there was a crack in the embryoSlide8
6. Flowering kale
Brassica
oleracea
Brassicaceae
52%
viable
Respondents that answered non-viable:
Concern that necrosis reached the juncture of the cotyledons and the embryo axisSlide9
7. Flowering
kale
Brassica
oleracea
Brassicaceae
90%
viable
Respondents that answered non-viable:
Concern that the radicle was broken
Concern that there was insufficient staining Slide10
8. Flowering
kale
Brassica
oleracea
Brassicaceae
87
%
non-viable
Respondents that answered viable:
Concern that the necrosis is only superficial
Embryo axis is not damaged
Non-essential areas unstainedSlide11
9. Flowering
kale
Brassica
oleracea
Brassicaceae
100% non-viableSlide12
10. LOVAGE
Levisticum
officinale
Apiaceae
82% non-viable
Respondents that answered viable:
Concern that embryo might have a light stain
Could be dormant as in AOSA/SCST TZ Handbook where there is the case of an unstained embryo with stained endosperm Slide13
11. LOVAGE
Levisticum
officinale
Apiaceae
100%
viableSlide14
12. NASTURTIUM
Tropaeolum
majus
Tropaeolaceae
95% non-viable
Respondents that answered viable:
Concern that the embryo stained lightly Slide15
13. NASTURTIUM
Tropaeolum
majus
Tropaeolaceae
65% non-viable
Respondents that answered viable:
Could not relate the image to the example given in the AOSA/SCST TZ Handbook
Unstained areas are minorSlide16
14. OREGANO
Origanum
vulgare
Lamiaceae
98% non-viable
Respondents that answered viable:
Saw uniform stainSlide17
15. OREGANO
Origanum
vulgare
Lamiaceae
100%
viableSlide18
16.
Phormium
sp.
Xanthorrhoeaceae
[
Agavaceae
]
100%
viableSlide19
17.
Phormium
sp
.
Xanthorrhoeaceae
[
Agavaceae
]
98% non-viable
Respondents that answered viable:
Saw more than half the embryo stainedSlide20
18.
Phormium
sp.
Xanthorrhoeaceae
[
Agavaceae
]
95%
viable
Respondents that answered non-viable:
Concerned that the endosperm was unstained (light reflecting off the seed made it look unstained)Slide21
19. SUNFLOWER
Helianthus
annuus
Asteraceae
90% non-viable
Respondents that answered viable:
Concern that the damage at the root tip was minimal
More than half the embryo stained
In the AOSA/SCST TZ Handbook slight damage to the root tip is acceptable Slide22
20. SUNFLOWER
Helianthus
annuus
Asteraceae
90%
viable
Respondents that answered non-viable:
Concern over the dark spots on the radicle
Unstained cotyledon Slide23
21. SUNFLOWER
Helianthus
annuus
Asteraceae
100% non-viableSlide24
22. SUNFLOWER
Helianthus
annuus
Asteraceae
100% non-viable