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Zinnia plant in bloom aboard an Earth orbiting space station. The growth of plants in outer space has elicited much scientific interest. [1] In the late 20th and early 21st century, plants were often taken into space in low Earth orbit to be grown in a weightless but pressurized controlled environment, sometimes called space gardens. [1]
A Veggie module weighs less than 8 kg (18 lb) and uses 90 watts. [7] It consists of three parts: a lighting system, a bellows enclosure, and a reservoir. [8] The lighting system regulates the amount and intensity of light plants receive, the bellows enclosure keeps the environment inside the unit separate from its surroundings, and the reservoir connects to plant pillows where the seeds grow.
Tikhov's research into astrobotany would later develop into research into growing plants in space, or demonstrating the possibility of plants to grow in extraterrestrial conditions (especially comparing the climate of Mars and Siberia), but he was the first known astronomer to use color to attempt to measure the level of vegetation on an ...
Wisconsin Fast Plants is the registered trademark for a cultivar of Brassica rapa, developed as a rapid life-cycle model organism for research and teaching. Wisconsin Fast Plants are a member of the Brassicaceae (formerly Cruciferae) family, closely related to the turnip and bok choy. Wisconsin Fast Plants were developed in accordance with an ...
NASA life support GAP technology with untreated beans (left tube) and biocontrol treated beans (right tube) returned from the Mir space station aboard the space shuttle – September 1997. Plants had their first encounters with Earth's orbit back in 1960 during two separate missions, namely Sputnik 4 and Discoverer 17 (for a comprehensive ...
This shows the net movement of water down its potential energy gradient, from highest water potential in the soil to lowest water potential in the air. [1] The soil-plant-atmosphere continuum (SPAC) is the pathway for water moving from soil through plants to the atmosphere. Continuum in the description highlights the continuous nature of water ...
Many plants lose much of the remaining energy on growing roots. Most crop plants store ~0.25% to 0.5% of the sunlight in the product (corn kernels, potato starch, etc.). Photosynthesis increases linearly with light intensity at low intensity, but at higher intensity this is no longer the case (see Photosynthesis-irradiance curve). Above about ...
Terrestrial plants, on the other hand, grow slowly and expend much of the energy derived from primary production on their own respiration, resulting in much smaller P/B ratios of between 0.5 and 2.0. [6] Secondary production at sea tends to be more efficient as well, with up to a 15% transfer efficiency between trophic levels.