Timeline for Have there been experiments in space to determine how plants grow without any gravitational or light cues for direction?
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
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| Dec 16, 2019 at 1:13 | comment | added | stormy | Of course there are extremophiles. I was thinking veggies and ornamentals. | |
| Dec 15, 2019 at 1:49 | comment | added | Vikki | @stormy: Many many many many many plants will grow just fine at temperatures below 10C or above 37.8C. | |
| Nov 6, 2018 at 23:51 | comment | added | Aaron | So, on the international space station, such an experiment could involved a carefully stirred ball of moist dirt with a seed placed at the center. Then put grow lamps evenly spaced around it in all directions, or just leave it dark and see what happens. And gravity is, from the reference frame of the seed since it is in orbit, zero so there is no direction to gravity. | |
| Nov 6, 2018 at 23:49 | comment | added | Aaron | @stormy ... and likewise, the distribution of water, temperature and other variables could be uniformly distributed in all directions around the seed. At least, one could try to do that as close to a uniform distribution as possible. | |
| Nov 6, 2018 at 23:47 | comment | added | Aaron | @stormy Actually, plants will start to grow without light. I am not an expert, but I have done an experiment where a plant in near complete dark grew, and it even grew faster than its counterpart in the light, which I assume was an attempt by the plant to reach an area where it could get some light (which, of course, failed). The plant looked sick and died early, but it did grow several inches. However, such an experiment need only to have a uniform distribution of light. Darkness is only 1 such uniform distribution. An equally spaced array of grow lamps in all directions could be another. | |
| Nov 6, 2018 at 23:01 | comment | added | stormy | Impossible to grow plants with out light. Impossible to grow plants without water. Impossible to grow plants without the chemistry photosynthesis requires. Impossible to grow plants outside the bounds of 50 to 100 degrees F. The complexity is not to be ignored. | |
| Nov 5, 2018 at 14:31 | vote | accept | Aaron | ||
| Nov 2, 2018 at 17:39 | history | edited | Aaron | CC BY-SA 4.0 |
clarified in response to comment
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| Nov 2, 2018 at 16:09 | comment | added | uhoh | @DrSheldon good point, the question is worded very carefully. | |
| Nov 2, 2018 at 15:00 | history | tweeted | twitter.com/StackSpaceExp/status/1058373328275206144 | ||
| Nov 2, 2018 at 5:03 | answer | added | DrSheldon | timeline score: 17 | |
| Nov 2, 2018 at 3:20 | comment | added | DrSheldon | @OrganicMarble: Seeds can and do germinate in darkness. Also, one could illuminate a plant uniformly to allow it to grow without any phototrophic clues. | |
| Nov 2, 2018 at 0:35 | comment | added | Organic Marble | Interesting question, but it will be difficult to grow plants without light. | |
| Nov 1, 2018 at 23:52 | history | edited | uhoh | CC BY-SA 4.0 |
deleted 4 characters in body; edited tags; edited title
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| Nov 1, 2018 at 22:43 | history | asked | Aaron | CC BY-SA 4.0 |