Navigation Links
'Non-invasive' cultivar? Buyer beware
Date:10/6/2011

Cultivars of popular ornamental woody plants that are being sold in the United States as non-invasive are probably anything but, according to an analysis by botanical researchers published in the October issue of BioScience. Tiffany M. Knight of Washington University in St. Louis, Missouri, and her coauthors at the Chicago Botanic Garden write that the claims of environmental safety are in most cases based on misleading demographic evidence that greatly underestimates the plants' invasive potential. What is more, the offspring of cultivars do not usually "breed true" and may be more fecund than their parents, especially if they cross with plants from nearby feral populations.

Many invasive plants were once ornamental cultivars, because the characteristics that the "green" industry looks for are the same ones that make a plant potentially invasive -- being adaptable to wide range of conditions, forming dense stands good for erosion control, and having a long flowering period, for example. In recent years the nursery and horticultural industries have responded by creating cultivars of top-selling plants that produce reduced numbers of viable seed and are advertized as "safe to natural areas." Such cultivars of Japanese barberry, buckthorn, and burning bush are now widely sold, as they avoid bans on growing invasive species.

Yet simple population modeling demonstrates that reductions of even 95 percent in the number of viable seed will leave a long-lived species quite capable of spreading -- and many of the new cultivars do not achieve even that much of a reduction. More sophisticated modeling would likely reveal even stronger invasive potential of the "safe" cultivars. Knight and her co-authors conclude that only completely sterile cultivars can be considered truly safe without further testing, and that other types should be tested for breeding true and having a low growth rate before they are sold as non-invasive.


'/>"/>
Contact: Tim Beardsley
tbeardsley@aibs.org
703-654-2500 x326
American Institute of Biological Sciences
Source:Eurekalert

Page: 1

Related biology news :

1. Potential for non-invasive brain tumor treatment
2. Buyer beware: Dangerous levels of lead found in used consumer products
3. Amphibians: Beware young beetles deadly siren call
4. Beware of predatory male black bears
5. Coffee, energy drinkers beware: Many mega-sized drinks loaded with sugar, MU nutrition expert says
6. Urban gardeners beware: There may be lead in your soil and food
7. NASA scientist publishes new book: Coming Climate Crisis? Consider the Past, Beware the Big Fix
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/2/2015)... , March 2, 2015  Businesses have a ... protection company Tharon Rankins Enterprises has announced the ... an ultra-safe way for businesses to protect their ... transactions. Beconux is a biometric ... Enterprises. Functioning similarly to an ATM machine, the ...
(Date:2/24/2015)... -- This report analyzes the worldwide markets for Iris Biometrics ... the US, Canada , Japan ... , Middle East , and ... provided for the period 2013 through 2020. Also, a seven-year ... analytics are derived from primary and secondary research. Company profiles ...
(Date:2/23/2015)... 2015 NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce market, ... for DISTRIBUTED VOICE DIRECTED PAYMENT METHOD AND ... new groundbreaking payment method. Payment accounts may be selected ... be accessed if both the speech (the word associated ...
Breaking Biology News(10 mins):Personal Data Protection Company Launches New Product 2World Iris Biometrics Industry 2World Iris Biometrics Industry 3World Iris Biometrics Industry 4World Iris Biometrics Industry 5World Iris Biometrics Industry 6World Iris Biometrics Industry 7World Iris Biometrics Industry 8World Iris Biometrics Industry 9World Iris Biometrics Industry 10World Iris Biometrics Industry 11NXT-ID Patents Voice Directed Payments 2NXT-ID Patents Voice Directed Payments 3
... have uncovered new information that may help guide design ... A new detailed structural analysis of the complex formed ... target provides insight into why this particular antibody is ... thus far. The research is published in the February ...
... and a foe ?approach a plant and communicate with it ... trade nitrogen for food. The foe is a parasite that ... a new finding published in Proceedings of the National Academy ... that the two strangers communicate with the plant in very ...
... common adult leukemia in the United States was last reviewed ... it was seen through the eyes of theories that dated ... three of the world's foremost experts on chronic lymphocytic leukemia ... the scientific community's knowledge of CLL that has occurred over ...
Cached Biology News:Research advances quest for HIV-1 vaccine 2Plants respond similarly to signals from friends, enemies 2Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine 2
(Date:3/2/2015)... CORAL SPRINGS, Florida , March 2, 2015 ... products, science-based pharmaceuticals and healthy whole food nutrition ... for treatments of lifestyle related disorders such as ... illnesses and health concerns.  Nutraceutical and Biotech Companies ... RIBT ), Amira Nature Foods Ltd. (NYSE: ...
(Date:3/2/2015)... Sterlitech is proud to debut its multi-line, ... 2015 AMTA Membrane Technology Conference in Orlando. This ... of engineering and customer feedback, which has resulted in ... applications across an array of disciplines. It is ... needs of researchers and engineers alike and is ideal ...
(Date:2/28/2015)... February 28, 2015 Increasing its efforts to ... launches its first three episodes of The GMO TRUTH podcast ... this month, as it continues its mission to discover the ... project's first phase, to “uncover the truth about the GMOs ... , The GMO Truth Podcast is an expansion of the ...
(Date:2/27/2015)... , Feb. 27, 2015 A ... the NCATS rare-diseases portfolio " in Science ... new financing technique to reduce the risk associated ... and potentially unlock new levels of funding for ... product of a unique collaboration between scientists at ...
Breaking Biology Technology:Clinical Studies & Research Substantiate Claims That Company's Targeted Healthy Nutritional Products Promote Healthy Lipids, Glucose & Insulin Levels 2Clinical Studies & Research Substantiate Claims That Company's Targeted Healthy Nutritional Products Promote Healthy Lipids, Glucose & Insulin Levels 3Clinical Studies & Research Substantiate Claims That Company's Targeted Healthy Nutritional Products Promote Healthy Lipids, Glucose & Insulin Levels 4Clinical Studies & Research Substantiate Claims That Company's Targeted Healthy Nutritional Products Promote Healthy Lipids, Glucose & Insulin Levels 5Clinical Studies & Research Substantiate Claims That Company's Targeted Healthy Nutritional Products Promote Healthy Lipids, Glucose & Insulin Levels 6Clinical Studies & Research Substantiate Claims That Company's Targeted Healthy Nutritional Products Promote Healthy Lipids, Glucose & Insulin Levels 7Sterlitech Displays Complete CF042 Membrane Test System 2The Walk a Mile Project Launches “GMO Truth” Podcast 2New Financing Technique May Hold Key to Unlocking Funding for Rare Diseases 2New Financing Technique May Hold Key to Unlocking Funding for Rare Diseases 3New Financing Technique May Hold Key to Unlocking Funding for Rare Diseases 4
... Wednesday, September 26th at 8:30am, NEW YORK, Sept. ... today that it will conduct a conference call,to discuss ... portfolio,products for a territory outside the US. The ... at,8:30am EDT. Michael S. Weiss, Chairman and CEO of ...
... LOD, Israel, Sept. 25 Glycominds Ltd., a ... disease,management of autoimmune diseases and cancer, announced today ... is a new consortium,funded by the Government of ... (CD) and colorectal cancer. The BMP consortium was,approved ...
... Sept. 25 Small Bone Innovations, Inc. (SBi),a single-source ... and joint sector, has introduced its PRECISE SD(TM) Volar ... portfolio. The PRECISE SD plate geometry is based ... series of distal radii in the Hamann Todd,Osteological Collection ...
Cached Biology Technology:Keryx Biopharmaceuticals, Inc. Announces Conference Call to Discuss Strategic Alliance 2Glycominds Joins Biomolecular Photonic (BMP) Consortium to Develop New Molecular Imaging Technique 2Small Bone Innovations Introduces New Distal Radius Plating System to Repair Complex Fractures 2Small Bone Innovations Introduces New Distal Radius Plating System to Repair Complex Fractures 3Small Bone Innovations Introduces New Distal Radius Plating System to Repair Complex Fractures 4
Recognizes the ~115 kDa NMDA receptor NR1 subunit in rat cortex tissue extracts....
... Anti-β-Tubulin IV Recognizes an epitope ... of β-tubulin isotype IV. No ... is observed. ascites fluid synthetic ... sequence of β-tubulin isotype IV, ...
Porcine Aortic Endothelial Cells (PAOEC) (>500,000 cells)...
Bovine Pulmonary Artery Smooth Muscle Cells (BPASMC) (>500,000 cells)...
Biology Products: