Navigation Links
Winter temperatures play complex role in triggering spring budburst
Date:1/11/2011

tists monitored the seedlings and documented the length of time it took for their buds to open.

"We found that, beyond a minimum required level of chilling, many different combinations of temperatures resulted in spring budburst," Harrington said. "Plants exposed to fewer hours of optimal chilling temperatures needed more hours of warmth to burst bud, whereas those exposed to many hours of chilling required fewer hours of warm temperatures for bud burst."

The plants were responding, the researchers found, to both warm and cold temperatures they experienced during the winter and spring. And, they noted that the same temperatures can have different effects depending on how often they occura fact that may seem counterintuitive at first. While some winter warming may hasten spring budburst, substantial periods of mid-winter warming, such as is projected under several future climate scenarios, may actually delay, not promote, normal budburst.

Harrington and her colleagues used their findings and research results from other species to develop a novel model that depicts this gradual tradeoff between chilling and forcing temperatures and have verified its accuracy using historical records. They found that the model was fairly accurate in predicting past budburst in Douglas-fir plantations, which indicates it works well with real-world conditions.

Because the model is based on biological relationships between plants and temperature, the researchers expect it will be fairly straightforward to modify for use with other species and for other areas. Managers, for example, could use the model to predict changes in budburst for a wide range of climatic projections and then evaluate the information to determine if selecting a different species to plant or stock from a different seed zone would be a useful management strategy.


'/>"/>

Contact: Yasmeen Sands
ysands@fs.fed.us
360-753-7716
USDA Forest Service, Pacific Northwest Research Station
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Inside a snowstorm: Scientists obtain close-up look at Old Man Winter
2. Winter sports threaten indigenous mountain birds
3. Kittiwakes trans-Atlantic winter odyssey linked to breeding success
4. Plants remember winter to bloom in spring with help of special molecule
5. Researchers learn that genetics determine winter vitamin D status
6. Ocean conditions likely to reduce Colorado River flows during this winters drought
7. Winter drought stress can delay flowering, prevent fruit loss in orange crops
8. Many urban streams harmful to aquatic life following winter pavement deicing
9. Winter Olympics: Altitude affects skill sports, not just endurance events
10. City of Winter Park Looks to DigitalPersona Software for Stronger Security and CJIS Compliance
11. Where do puffins go in the winter?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Winter temperatures play complex role in triggering spring budburst
(Date:7/22/2014)... feature natural habitats and trees and not just asphalt ... to a University of Colorado Boulder study. , Working ... provide stress-reducing benefits for youth, according to a paper ... The study is one of the first of its ... to green settings and stress. , "Many schools already ...
(Date:7/22/2014)... Conn. , July 22, 2014 ... the growing m-commerce market, announces its next generation smart ... 30-minute consumer oriented television show that airs on ... NewsWatch regularly features top technology ... July 31st on the History Channel (6:00-6:30am ET/PT) ...
(Date:7/21/2014)... researchers have detected genetic fragments of Middle East Respiratory ... holding a camel infected with the virus. The work, ... open-access journal of the American Society for Microbiology, indicates ... disease can be transmitted through the air. , MERS, ... has been identified in 699 people as of June ...
Breaking Biology News(10 mins):Natural-terrain schoolyards reduce children's stress, says Colorado University-Boulder study 2Natural-terrain schoolyards reduce children's stress, says Colorado University-Boulder study 3NXT-ID's Next Generation Wocket Smart Wallet to be Featured on NewsWatch, Airing on History Channel, FYI Network and ION Network 2NXT-ID's Next Generation Wocket Smart Wallet to be Featured on NewsWatch, Airing on History Channel, FYI Network and ION Network 3Middle East Respiratory Syndrome coronavirus detected in the air of a Saudi Arabian camel barn 2
... between tiny single-celled algae and highly specialized bacteria. Their ... the oceans by taking nitrogen from the atmosphere and ... use. Details of the symbiosis, published in ... from the investigation of a mysterious nitrogen-fixing microbe with ...
... Just as women are advised to get plenty of folic ... new research suggests another very similar nutrient may one day ... Consuming greater amounts of choline ... may lower an infant,s vulnerability to stress-related illnesses, such as ...
... Bethesda, MD FASEB MARC (Minority Access to Research ... the 2012 Biomedical Engineering Society (BMES) Annual Meeting in ... meant to promote the entry of underrepresented minority students, ... science community and to encourage the participation of young ...
Cached Biology News:Unusual symbiosis discovered in marine microorganisms 2Unusual symbiosis discovered in marine microorganisms 3Unusual symbiosis discovered in marine microorganisms 4Nutrient in eggs and meat may influence gene expression from infancy to adulthood 2Nutrient in eggs and meat may influence gene expression from infancy to adulthood 3
(Date:7/22/2014)... OHAUS Corporation, a leading worldwide ... and scales, proudly announces its Explorer line of ... magazine’s 2014 “Readers' Choice” Award for best ... Explorer was voted the best laboratory balance by ... celebrates “excellence in product design and performance for ...
(Date:7/22/2014)... SHENZHEN, China , 22 juli 2014 /PRNewswire/ ... dochtermaatschappij van BGI, ,s wereld grootste organisatie op het ... een nieuwe service ten behoeve van hele menselijke genoomsequentie ... Complete Genomics. In 2013 acquireerde BGI ... hoog aanzien staat vanwege de in eigen beheer ontwikkelde ...
(Date:7/22/2014)... 22, 2014  Semler Scientific, Inc. (Nasdaq: ... assessment company that develops patented products that assist ... diseases, today announced that it will report second ... U.S. financial markets on July 25, 2014. Doug Murphy-Chutorian, M.D., ... conference call at 11 a.m. EDT, July 25, 2014. ...
(Date:7/22/2014)... Angeles, CA (PRWEB) July 22, 2014 ... test solutions with the debut of its fluorescent ... of Clinical Chemistry (AACC) meeting in Chicago, July ... or bench top versions, the HRDR-300 is a ... pending technology to analyze fluorescent lateral flow immunoassays ...
Breaking Biology Technology:OHAUS Explorer Voted “Best Balance” in Laboratory Equipment’s 2014 Readers’ Choice Awards 2BGI Tech introduceert service op gebied van hele menselijke exoomsequencing op geavanceerd Complete Genomics-platform 2Semler to Report Second Quarter 2014 Financial Results and Host Conference Call on July 25, 2014 2Holomic to Debut HRDR-300 Fluorescent Immunoassay Reader at the AACC 2014 2
... (NYSE: DGX ), the leading provider of diagnostic ... shareholders,on Friday, May 16th at 10:30 am ET., ... Relations,section of the company Web site at http://www.questdiagnostics.com/investor ... broadcast, a replay will be available on,the Web site ...
... study supports the potential for QLT,s drug elution technology ... reduce and ... QLT Inc. (NASDAQ: QLTI; TSX:,QLT) announced today results from ... QLT Plug Delivery, Inc., of its punctal plug,drug delivery ...
... 12 Amylin Pharmaceuticals,Inc. (Nasdaq: AMLN ) will ... May 14, 2008 at 3:05 p.m. CT / 1:05 ... Finance and Chief Financial Officer of,Amylin Pharmaceuticals, will be ... breakout session will be webcast, and a,recording will be ...
Cached Biology Technology:QLT reports initial proof of concept data for punctal plug delivery technology 2QLT reports initial proof of concept data for punctal plug delivery technology 3QLT reports initial proof of concept data for punctal plug delivery technology 4