Navigation Links
Artificial light quality affects herbivore preference for seedlings
Date:6/22/2011

OSAKA, JAPANIn horticultural production, growers often depend on systems that use artificial light to produce high-quality transplants. Although the systems are efficient, fluorescent lamps can produce plants with shorter shoots than those grown under natural light. Studies have indicated that this reduced shoot elongation is due to the high red:far red ratio of typical commercial fluorescent lamps, which emit little far red irradiation.

In natural environments a reduction in the red:far red (R:FR) ratio resulting from the absorption of red light by neighboring vegetation increases shoot elongation and leaf expansion and reduces leaf thickness and chlorophyll content. This morphologic response, called "shade avoidance", reduces plant resistance to herbivores. Observing this phenomenon, scientists questioned whether illumination by fluorescent lamps with higher-than-natural R:FR ratio could lessen plants' attractiveness to herbivores, thus reducing the need for pesticides at transplant.

Researchers in Japan tested the hypothesis with experiments that evaluated the preference of adult sweetpotato whitefly to cucumber seedlings grown under commercial fluorescent lamps or under metal-halide lamps that provided a spectrum similar to that of natural light. The results were published in HortTechnology.

Cucumber seedlings (Cucumis sativus) were grown under fluorescent lamps (FL) or under metal-halide lamps (ML) in a 12/12-hour light/dark cycle. The red:far red (R:FR) ratio of FL was 7.0 and that of ML was 1.2. Pairs of cucumber seedlings, one grown under FLs and the other under MLs, were then placed in cages and about 100 sweetpotato whitefly adults (Bemisia tabaci biotype B) were released. "There were significantly fewer whitefly adults on the cucumber seedlings grown under fluorescent lamps (36%) than on those grown under metal-halide lamps (64%) 24 hours after release", reported corresponding author Toshio Shibuya. "Additionally,
'/>"/>

Contact: Michael W. Neff
mwneff@ashs.org
703-836-4606
American Society for Horticultural Science
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Washington University surgeons successfully use artificial lung in toddler
2. 2-year results: Artificial disc a viable alternative to fusion for 2-level disc disease
3. Artificial tissue promotes skin growth in wounds
4. Latest Artificial Pancreas Trials Reduce Risk of Low Blood Sugar
5. University of Granada researchers make the first bioartificial organ in Spain
6. For back, neck pain, artificial disc replacement has cost, outcome advantages over fusion surgery
7. Biological joints could replace artificial joints soon
8. Artificial Turf Helps Football Players With Agility Drills
9. How football playing robots have the future of artificial intelligence at their feet
10. VCU Medical Center leads study of first US portable driver for powering the total artificial heart
11. World Renowned Total Artificial Heart Pioneer Dr. Jack Copeland Joins Faculty at UC San Diego
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/12/2014)... 2014 The Passenger Information System market ... to $20,341.36 million by 2019, at an expected CAGR ... , The public transport infrastructure in North America is ... in almost every corner of the region. The growing ... public transport service providers are driving the North American ...
(Date:7/12/2014)... The "North American ... Market by Angioplasty Balloon (Plain/Old, Cutting), ... IVC Filter (Retrievable), Endovascular Stent Graft ... studies the major market drivers, restraints, ... Canada. , Browse 108 market data ...
(Date:7/12/2014)... 2014 Tylenol lawsuits ( http://www.tylenollawsuitclaims.com/ ... forward in the federal multidistrict litigation underway in ... Liebhard LLP reports. According to a filing dated ... Stengel has ordered the deposition of a former ... that the witness’s testimony concerning the marketing of ...
(Date:7/12/2014)... ON Canada (PRWEB) July 12, 2014 Sean Francis, ... for throwing out special challenges to his clients. He’s also known ... Club. He recently found a way to combine the two and ... has raised $2,000 for the Boys and Girls Club. , The ... Program, which started on June 23rd. Francis sent out emails and ...
(Date:7/12/2014)... Hills, CA (PRWEB) July 12, 2014 For ... why are bodies can readily absorb the nutrients in food. ... tiny particles that are small enough to be absorbed by ... DZ10 team, a lack of enzymes in regular food is ... is a product that was started by Michelle DelPresto, a ...
Breaking Medicine News(10 mins):Health News:North America Passenger Information System (ICT) Market worth $5,486.88 Million by 2019 - New Report by MicroMarket Monitor 2Health News:North America Passenger Information System (ICT) Market worth $5,486.88 Million by 2019 - New Report by MicroMarket Monitor 3Health News:North America Passenger Information System (ICT) Market worth $5,486.88 Million by 2019 - New Report by MicroMarket Monitor 4Health News:North American Interventional Cardiology & Peripheral Vascular Devices Market - New Report by MarketsandMarkets 2Health News:North American Interventional Cardiology & Peripheral Vascular Devices Market - New Report by MarketsandMarkets 3Health News:North American Interventional Cardiology & Peripheral Vascular Devices Market - New Report by MarketsandMarkets 4Health News:North American Interventional Cardiology & Peripheral Vascular Devices Market - New Report by MarketsandMarkets 5Health News:Tylenol Lawsuit News: U.S. District Judge Overseeing Federal Tylenol Liver Damage Litigation Orders Deposition of Former McNeil President, Bernstein Liebhard LLP Reports 2Health News:Tylenol Lawsuit News: U.S. District Judge Overseeing Federal Tylenol Liver Damage Litigation Orders Deposition of Former McNeil President, Bernstein Liebhard LLP Reports 3Health News:Tylenol Lawsuit News: U.S. District Judge Overseeing Federal Tylenol Liver Damage Litigation Orders Deposition of Former McNeil President, Bernstein Liebhard LLP Reports 4Health News:Kawartha Lakes Fit Body Boot Camp’s Successful Fat Loss Challenge Results in $2,000 to Boys and Girls Club 2Health News:Kawartha Lakes Fit Body Boot Camp’s Successful Fat Loss Challenge Results in $2,000 to Boys and Girls Club 3Health News:New Super Digestive Enzyme, DZ10, Supercharges The Digestion Process 2
... Suffering From CHF, COPD, Diabetes and, Other ... With a New, Interactive Telehealth Monitor Based ... May 19 RTX Healthcare,today announced a new ... allows healthcare system integrators and disease management,companies to ...
... May 19 Chiltern, a leading global research,organization, announced ... of,General Manager, Latin America., The Latin American operation ... Podesta and will be primarily focused on supporting our,Global ... 9,years experience in clinical research, where he has held ...
... DIEGO, Calif. Many patients may soon find relief ... with irritable bowel syndrome, or IBS. , Lubiprostone, known ... the U.S. Food and Drug Administration for use in ... University of Michigan Health System research that demonstrated the ...
... General Editor Mary Carmichael,reports that at least 800,000 children ... some of them wrongly. There are many drugs to ... often, they don,t work at,all. There are no studies ... can be disastrous; 10 percent of sufferers,commit suicide. Parents ...
... endoscope allows immediate imagery of gastrointestinal tract , , SUNDAY, ... called confocal laser endomicroscopy (CLE) could lead to earlier ... reflux disease, and inflammatory bowel disease. , That,s the ... at the Digestive Disease Week conference in San Diego. ...
... the first genetically altered monkey model that replicates some ... a new study funded by the National Institutes of ... complex, devastating and incurable genetic disorder affecting the brain. ... online publication edition of Nature, could lead to major ...
Cached Medicine News:Health News:RTX Healthcare Launch Wireless Telehealth Monitor With Built-in GSM/GPRS Mobile Phone Technology 2Health News:Chiltern Expands Its Global Reach to Latin America 2Health News:Drug brings relief for many IBS patients who experience constipation 2Health News:NEWSWEEK: Media Lead Sheet/May 26, 2008 Issue (on newsstands Monday, May 19, 2008) 2Health News:NEWSWEEK: Media Lead Sheet/May 26, 2008 Issue (on newsstands Monday, May 19, 2008) 3Health News:NEWSWEEK: Media Lead Sheet/May 26, 2008 Issue (on newsstands Monday, May 19, 2008) 4Health News:New Technology Speeds GI Disease Diagnosis 2Health News:New Technology Speeds GI Disease Diagnosis 3Health News:Researchers develop first transgenic monkey model of Huntington's disease 2
(Date:1/15/2014)... MILTON, N.Y. , Jan. 15, 2014 Sono-Tek Corporation ... three months ended November 30, 2013, compared to sales of ... or 20%. Once again, this quarter has also shown growth ... in the first quarter of this fiscal year. Markets that ...
(Date:1/15/2014)... 15, 2014 Most osteoporosis patients want a choice ... online survey* sponsored by Mission Pharmacal Company. The survey, ... Foundation online support community, revealed that 74 percent of ... in a form other than a pill or a ...
(Date:1/15/2014)... RAPIDS, Mich. , Jan. 15, 2014 As health ... the flu virus, select Meijer pharmacies in Michigan ... strep throat to eligible patients, enabling Meijer pharmacists to administer ... strict protocol set by a physician participating in the study. ...
Breaking Medicine Technology:Sono-Tek Announces Third Quarter Results 2Sono-Tek Announces Third Quarter Results 3Sono-Tek Announces Third Quarter Results 4Mission Pharmacal Conducts Online Survey of Osteoporosis Patients 2Mission Pharmacal Conducts Online Survey of Osteoporosis Patients 3Meijer Pharmacy Offers Free Flu, Strep Testing as Influenza Cases Rise Across the Midwest 2Meijer Pharmacy Offers Free Flu, Strep Testing as Influenza Cases Rise Across the Midwest 3
... ... ... ... ...
... ... ... ... ...
Cached Medicine Technology:Diabetics Twice as Likely to Have Hearing Loss; Ohio HearUSA Centers to Offer Free Hearing Screening and Diabetes Video in March 2Diabetics Twice as Likely to Have Hearing Loss; Ohio HearUSA Centers to Offer Free Hearing Screening and Diabetes Video in March 3Diabetics Twice as Likely to Have Hearing Loss; Ohio HearUSA Centers to Offer Free Hearing Screening and Diabetes Video in March 4Diabetics Twice as Likely to Have Hearing Loss; Ohio HearUSA Centers to Offer Free Hearing Screening and Diabetes Video in March 5QRxPharma Limited and China Aoxing Pharmaceutical Company Announce Strategic Alliance for Development of MoxDuo(R)IV 2QRxPharma Limited and China Aoxing Pharmaceutical Company Announce Strategic Alliance for Development of MoxDuo(R)IV 3QRxPharma Limited and China Aoxing Pharmaceutical Company Announce Strategic Alliance for Development of MoxDuo(R)IV 4QRxPharma Limited and China Aoxing Pharmaceutical Company Announce Strategic Alliance for Development of MoxDuo(R)IV 5QRxPharma Limited and China Aoxing Pharmaceutical Company Announce Strategic Alliance for Development of MoxDuo(R)IV 6QRxPharma Limited and China Aoxing Pharmaceutical Company Announce Strategic Alliance for Development of MoxDuo(R)IV 7
Disposable Feather Blades, 50 per pack...
Fine abrasive for knife sharpening, 6 grams net...
Knife sharpening back for Standard Knife, C Profile...
Standard knife with box, C profile...
Medicine Products: