OUTREACH: SUPER-DWARF SEED
INFORMATION |
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We are continuing to identify and characterize unique dwarf cultivars
of other crop species. Seed samples of these cultivars will be
available when our tests are complete. We have limited funding for
growing and distributing these unique crop plants. If you are
interested in making a donation to help cover the cost of researching,
maintaining, and distributing these seeds please contact
Bruce Bugbee.
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--- CLICK THE CULTIVAR TO JUMP TO
CULTURAL RECOMMENDATIONS BELOW ---
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"Apogee": The point in an orbit farthest from the
earth.
'USU-Apogee' was developed for high yields in space. Crops
for the space station need to be short so they can be grown on
shelves. 'USU-Apogee is half the height of normal wheat.
It has few tillers (branches) and smaller leaves than wheat on
Earth. Tillers and large leaves compete with other plants
and reduce the yield of plant communities. Two small
leaves are better than one large leaf.
RESEARCH PERTAINING TO
'USU-APOGEE' WHEAT
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GENERAL INFO /
RECOMMENDED CULTURAL CONDITIONS:
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HEIGHT:
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40 to 48 cm tall
(shorter at warmer temperatures) |
LIFE CYCLE:
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25 days to heading;
60 to 65 days to harvest |
TEMPERATURE:
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23 °C pre-anthesis
17 °C
post-anthesis
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PPF:
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300 to 2000 μmol m-2 s-1
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PHOTOPERIOD:
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24-h (continuous light)
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SPACING:
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Plant seeds in rows 5 cm apart;
5 cm between seeds in the row
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"Perigee": The point in an orbit closest to the earth.
'USU-Perigee' was developed for high yields in space. Crops for
the space station need to be short so they can be grown on shelves.
'USU-Perigee' and 'USU-Apogee' both came from a hybrid cross between
'Super Dwarf' Wheat and 'Parula'.
RESEARCH PERTAINING TO
'USU-PERIGEE' WHEAT |
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GENERAL INFO /
RECOMMENDED CULTURAL CONDITIONS:
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HEIGHT:
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27 to 32 cm tall
(shorter at warmer temperatures)
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LIFE CYCLE:
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at 23 °C and continuous light,
30 days to heading;
65 to 70 days to harvest
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TEMPERATURE:
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23 °C pre-anthesis
17 °C
post-anthesis
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PPF:
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300 to 2000 μmol m-2 s-1
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PHOTOPERIOD:
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24-h (continuous light)
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(Oryza sativa japonica-type)
‘Super Dwarf’ rice lacks the enzyme 3ß- hydrozylase that catalyzes the conversion of
GA20 (inactive) to GA1 (active). Because ‘Super
Dwarf’ rice lacks GA1, germination is poor; however, 90%
germination can be achieved by germinating the seed under water,
without aeration, at 33°C.
RESEARCH PERTAINING TO
'SUPER DWARF' RICE
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GENERAL INFO /
RECOMMENDED CULTURAL CONDITIONS:
ORIGIN:
mutant selection from
Oryza sativa cv. Shiokari
HEIGHT:
20 cm tall
LIFE CYCLE:
45 days to heading;
80 days to harvest
PPF:
600 to 2000 µmol m-2 s-1
TEMPERATURE:
32/26 °C d/n pre-anthesis
28/22 °C post-anthesis
PHOTOPERIOD:
12-h
PLANTING
DENSITY:
500 to 1000 plants m-2
TOP OF PAGE
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'Micro-Tina' was developed at the University of
Florida - Bradenton, and extensively tested at Utah State University.
Micro-Tina's short height, high yield, and good flavor make it
excellent for fresh food in the space station.
RESEARCH PERTAINING TO
'MICRO-TINA' TOMATO
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GENERAL INFO /
RECOMMENDED CULTURAL CONDITIONS:
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HEIGHT:
20 to 25 cm
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LIFE CYCLE:
flowering: ~ 25 days;
first red fruit: ~ 45
days after flowering
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TEMPERATURE:
25 to 28 °C day;
20 to 23 °C night
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PPF:
200 to 1500 μmol m-2 s-1
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PHOTOPERIOD:
16-h
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We have identified an excellent super-dwarf pepper cultivar for
controlled environment research. 'Triton' is 20-cm tall, flowers in
25 days, and produces large (5-8 cm long) fruit. We are now
characterizing the unique growth and development responses of
'Triton'.
RESEARCH PERTAINING TO
'TRITON' PEPPER
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GENERAL INFO /
RECOMMENDED CULTURAL CONDITIONS:
HEIGHT:
25 cm tall
LIFE CYCLE:
flowering: ~25 days (longer in low light)
TEMPERATURE:
30 °C
PPF:
100 to 1500 μmol m-2 s-1
PHOTOPERIOD:
20-h
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'HOYT' SOYBEAN
Hoyt is a determinate, early maturing soybean cultivar that was
developed for high yields in optimum environments. Hoyt’s small
size makes it ideal for use in the International Space Station. |
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GENERAL INFO /
RECOMMENDED CULTURAL CONDITIONS:
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HEIGHT:
20 to 30 cm tall (shorter at cooler
temperatures)
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LIFE CYCLE:
flowering: 24 days;
80 days to harvest (indicated by loss of green color in seed pods) | |
TEMPERATURE:
27 °C before flowering;
decreasing to 22 °C after flowering | |
PPF:
300 to 800 μmol m-2 s-1
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PHOTOPERIOD:
12-h; 'Hoyt' is a short-day plant that must
have 12-h of complete darkness every night | |
TOP OF PAGE
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'Earligreen" was developed at the Morden
Research Station in Manitoba, Canada. It is ideal
for the International Space Station because it is
determinate, early maturing, and extremely short.
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GENERAL INFO /
RECOMMENDED CULTURAL CONDITIONS:
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HEIGHT:
18 to 25 cm tall (shorter in lower light)
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LIFE CYCLE:
24 days to first flower;
54 days to harvest | |
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TEMPERATURE:
20 to 25 °C | |
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PPF:
100 to 1000 μmol m-2 s-1
(grows extremely well in low light) | |
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PHOTOPERIOD:
16 to 20 hours (day length sensitive) | |
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