EFFECT OF LIGHT QUALITY ON THE GROWTH OF DUCKWEED, LEMNA MINOR L
The effect of colored plastic panels was studied on a model system, duckweed, Lemna minor L., to determine if light could control emergent aquatic plants. Wavelengths of incident light were controlled using three different colored plastics (red, green, and blue), for which the UV-visible spectrum wa...
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| Veröffentlicht in: | Florida scientist 2005-01, Vol.68 (1), p.20-24 |
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| creator | Anderson, Laura Martin, Dean F. |
| description | The effect of colored plastic panels was studied on a model system, duckweed, Lemna minor L., to determine if light could control emergent aquatic plants. Wavelengths of incident light were controlled using three different colored plastics (red, green, and blue), for which the UV-visible spectrum was evaluated using a spectrophotometer. Plants were exposed to light passing through the plastic, and their growth was compared with ordinary light of the same intensity (100 μEs/m2/sec. as measured by a light meter). Temperature was maintained at 25° ± 0.2°C. Growth was measured by the number of fronds produced as a function of time, a relationship between frond count, fresh weight, and dry weight was established. Plants grown under green plastic (420–580 nm) and blue plastic (400–470 and 620–660 nm) grew less than control samples; plants under red plastic (550–700 nm) grew better than control samples. |
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Wavelengths of incident light were controlled using three different colored plastics (red, green, and blue), for which the UV-visible spectrum was evaluated using a spectrophotometer. Plants were exposed to light passing through the plastic, and their growth was compared with ordinary light of the same intensity (100 μEs/m2/sec. as measured by a light meter). Temperature was maintained at 25° ± 0.2°C. Growth was measured by the number of fronds produced as a function of time, a relationship between frond count, fresh weight, and dry weight was established. Plants grown under green plastic (420–580 nm) and blue plastic (400–470 and 620–660 nm) grew less than control samples; plants under red plastic (550–700 nm) grew better than control samples.</description><identifier>ISSN: 0098-4590</identifier><language>eng</language><publisher>The Florida Academy of Sciences, Inc</publisher><subject>Control systems ; Luminous intensity ; Plant growth ; Plants ; Standard deviation ; T tests ; Vegetation ; Visible spectrum ; Wastewater treatment ; Wavelengths</subject><ispartof>Florida scientist, 2005-01, Vol.68 (1), p.20-24</ispartof><rights>Copyright © Florida Academy of Sciences, Inc. 2005</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/24321235$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/24321235$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,57992,58225</link.rule.ids></links><search><creatorcontrib>Anderson, Laura</creatorcontrib><creatorcontrib>Martin, Dean F.</creatorcontrib><title>EFFECT OF LIGHT QUALITY ON THE GROWTH OF DUCKWEED, LEMNA MINOR L</title><title>Florida scientist</title><description>The effect of colored plastic panels was studied on a model system, duckweed, Lemna minor L., to determine if light could control emergent aquatic plants. Wavelengths of incident light were controlled using three different colored plastics (red, green, and blue), for which the UV-visible spectrum was evaluated using a spectrophotometer. Plants were exposed to light passing through the plastic, and their growth was compared with ordinary light of the same intensity (100 μEs/m2/sec. as measured by a light meter). Temperature was maintained at 25° ± 0.2°C. Growth was measured by the number of fronds produced as a function of time, a relationship between frond count, fresh weight, and dry weight was established. Plants grown under green plastic (420–580 nm) and blue plastic (400–470 and 620–660 nm) grew less than control samples; plants under red plastic (550–700 nm) grew better than control samples.</description><subject>Control systems</subject><subject>Luminous intensity</subject><subject>Plant growth</subject><subject>Plants</subject><subject>Standard deviation</subject><subject>T tests</subject><subject>Vegetation</subject><subject>Visible spectrum</subject><subject>Wastewater treatment</subject><subject>Wavelengths</subject><issn>0098-4590</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNotjE1LwzAAQHNQcE5_gpCTJwv5XJObo0s_MGtxZAxPJaYJrHR2NtvBf-9knt7hPd4NmCEkRcK4RHfgPsYeIcI54zPwqvJcZQY2OdRVURr4vl3qynzApoamVLDYNDtT_unVNnvbKbV6gVqt6yVcV3WzgfoB3AY7RP_4zzkwuTJZmeimqLKlTnpOaSKl8wvXuQVGEgnrmGA2iM7jzgWGXYqws4HyT0woSQN3iCIeupRTgQjrhKVz8HzdHqfx--zjqT3so_PDYL_8eI4tTinhktBL-HQN-3gap_Y47Q92-mkJo-Qy5_QXVmlIBg</recordid><startdate>20050101</startdate><enddate>20050101</enddate><creator>Anderson, Laura</creator><creator>Martin, Dean F.</creator><general>The Florida Academy of Sciences, Inc</general><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>20050101</creationdate><title>EFFECT OF LIGHT QUALITY ON THE GROWTH OF DUCKWEED, LEMNA MINOR L</title><author>Anderson, Laura ; Martin, Dean F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j533-99ce6cdc610908ac484af8de1dcf41c701caf35b12327f5c0305fd7538024d8a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Control systems</topic><topic>Luminous intensity</topic><topic>Plant growth</topic><topic>Plants</topic><topic>Standard deviation</topic><topic>T tests</topic><topic>Vegetation</topic><topic>Visible spectrum</topic><topic>Wastewater treatment</topic><topic>Wavelengths</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Anderson, Laura</creatorcontrib><creatorcontrib>Martin, Dean F.</creatorcontrib><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Florida scientist</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Anderson, Laura</au><au>Martin, Dean F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>EFFECT OF LIGHT QUALITY ON THE GROWTH OF DUCKWEED, LEMNA MINOR L</atitle><jtitle>Florida scientist</jtitle><date>2005-01-01</date><risdate>2005</risdate><volume>68</volume><issue>1</issue><spage>20</spage><epage>24</epage><pages>20-24</pages><issn>0098-4590</issn><abstract>The effect of colored plastic panels was studied on a model system, duckweed, Lemna minor L., to determine if light could control emergent aquatic plants. Wavelengths of incident light were controlled using three different colored plastics (red, green, and blue), for which the UV-visible spectrum was evaluated using a spectrophotometer. Plants were exposed to light passing through the plastic, and their growth was compared with ordinary light of the same intensity (100 μEs/m2/sec. as measured by a light meter). Temperature was maintained at 25° ± 0.2°C. Growth was measured by the number of fronds produced as a function of time, a relationship between frond count, fresh weight, and dry weight was established. Plants grown under green plastic (420–580 nm) and blue plastic (400–470 and 620–660 nm) grew less than control samples; plants under red plastic (550–700 nm) grew better than control samples.</abstract><pub>The Florida Academy of Sciences, Inc</pub><tpages>5</tpages></addata></record> |
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| identifier | ISSN: 0098-4590 |
| ispartof | Florida scientist, 2005-01, Vol.68 (1), p.20-24 |
| issn | 0098-4590 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_17325923 |
| source | Jstor Complete Legacy |
| subjects | Control systems Luminous intensity Plant growth Plants Standard deviation T tests Vegetation Visible spectrum Wastewater treatment Wavelengths |
| title | EFFECT OF LIGHT QUALITY ON THE GROWTH OF DUCKWEED, LEMNA MINOR L |
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