Navigation Links
From a Few Wild Ancestors, a Citrus Cornucopia

For most of us, the word “citrus?conjures up images of oranges, grapefruits, lemons, limes -- and possibly citrons or blood oranges, if you’re a true connoisseur of fruit.

But for ARS horticulturalist Robert R. Krueger, the genus Citrus includes at least 16 species, with hundreds of distant relatives, including lesser-known, peelable oddities like pummelos, trifoliate oranges, and kumquats.

Krueger, who is with the ARS National Clonal Germplasm Repository for Citrus and Dates, in Riverside, California, helps look after the nation’s largest collection, or genebank, of citrus trees. The trees, as well as their seeds, budwood, and pollen, serve as valuable germplasm—plant tissue containing the essential genetic information needed to start new citrus plants.

The citrus genebank -- a University of California-Riverside (UCR) resource that is used cooperatively by the ARS repository -- has been gathering accessions for almost a century. Right now its holdings number about 900 specimens, many of which were acquired outside the United States. But it hasn’t been known, until recently, just what the collection’s real breadth and scope were.

“There were redundancies and gaps in the collection that needed to be sorted out,?says Krueger, “and some specimens had even been mislabeled.?Mistakes are costly for curators, since a few missing or added letters can change the way a specimen is classified and managed -- and possibly how it will be used.

“For example, one accession planted in the field,?says Krueger, “was considered to be a Rangpur lime, or Citrus limonia. But when you walked past it, you’d think for sure it was a lemon. It looked like a lemon, smelled like a lemon. Eventually I came by some records from the 1950s indicating that the tree actually was a lemon with the scientific name Citrus limon. Somewhere along the way, someone had mistakenly attached those two letters to the species name.?/p>

A Core Collection

With the h
'"/>

Source:ARS


Page: 1 2 3 4

Related biology news :

1. Leptin-signaling Protein Maintains Normal Body Weight And Energy Balance In Mice
2. Weighting cancer drugs to make them hit tumors harder
3. Weighty viruses
4. Ancient olfaction protein is shared by many bugs, offering new pest control target
5. Gene variations explain drug dose required to control seizures
6. U-M scientists find genes that control growth of common skin cancer
7. Scientists discuss improved biopesticides for locust control in West Africa
8. Insight into natural cholesterol control suggests novel cholesterol-lowering therapy
9. To control germs, scientists deploy tiny agents provocateurs
10. Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression
11. Master gene controls healing of skin in fruit flies and mammals
Post Your Comments:
(Date:3/18/2010)... can live for twenty years, fertilizing millions of eggs ... activity. , Danish researchers who have studied ants ... 1992 discovered that in both ant and bee species ... fluid favors the survival of its own sperm over ... stored, leafcutter ant queens neutralize male-male sperm competition with ...
(Date:3/18/2010)... available in Spanish . , Feeding ... as part of their regular diet makes them ... a study by Agricultural Research Service (ARS) scientists ... and overall behavioral activity among young female pigs ... acquired through diet, is the precursor for the ...
(Date:3/18/2010)... Biotech, Inc., ( www.genwaybio.com ) the US-based diagnostic company ... is expanding this cancer testing program internationally. An ... YouTM Cancer Assessment in Greece starting in April. ... as well. GenWay currently offers this test in ... Sergey Sikora, Vice President of Business Development, said, "The ...
Breaking Biology News(10 mins):Females shut down male-male sperm competition in leafcutter ants 2Tryptophan-enriched diet reduces pig aggression 2Moravia Worldwide Names George Krawczyk as Sales Director for Ireland and UK 61905 1Moravia Worldwide Names George Krawczyk as Sales Director for Ireland and UK 61905 2Barbara Fentress Designer of the Denver International Airport and Convention Center Offers Her Private Mansion at Absolute Auction 61902 1Barbara Fentress Designer of the Denver International Airport and Convention Center Offers Her Private Mansion at Absolute Auction 61902 2Ophthalmic Equipment Distributor Latham 26amp 3B Phillips SE Division Unveils Website 61899 1Ophthalmic Equipment Distributor Latham 26amp 3B Phillips SE Division Unveils Website 61899 2Ophthalmic Equipment Distributor Latham 26amp 3B Phillips SE Division Unveils Website 61899 3
... that has recently captured the attention of people all ... revolution are carbon nanotubes, amazing materials with astonishing properties. ... emerging regularly. , Carbon nanotubes are not as ... there are the simple single walled carbon nanotubes and ...
... --- An online auction for naming rights to a ... Florida brought a winning bid of $40,800, with proceeds ... of Natural History researchers George Austin and Andrew Warren ... this year, and describe it in this weeks issue ...
... Publishing Corporation have today entered into an agreement to ... Access (OA) journals. , This is a bold strategic ... to develop a collection of Gold Open Access journals, ... important scholarly research. SAGE is the worlds fifth largest ...
Other Biology News:Another type of nanotube, a how-to guide to making bamboo-structured carbon nanotubes 2UF's new owl butterfly species naming rights auctioned for $40,800 2UF's new owl butterfly species naming rights auctioned for $40,800 3SAGE and Hindawi announce landmark open access agreement 2
(Date:3/16/2010)... Stock Exchange Symbol: MS , ... , , ... ... EDMONTON , March 16 ... ...
(Date:3/16/2010)... PharmAthene, Inc. (Amex: PIP ) a biodefense company developing medical countermeasures against biological and chemical threats, announced today that its financial results ... ... , ... ... ...
(Date:3/16/2010)... March 16 The Gynecologic Cancer Foundation (GCF) and the Claudia ... as the first recipient of the $50,000 GCF/Claudia Cohen Prize for Outstanding ... (SGO) 41st Annual Meeting on Women,s Cancer, meeting in San Francisco ... ... ...
(Date:3/16/2010)... (LSE: SHP,NASDAQ; SHPGY), announces that it has received a Paragraph IV Notice ... New Drug Application ("ANDA") for a generic version of Shire,s 1,mg, 2mg, ... ... ... , ...
Breaking Biology Technology:BioMS Medical Announces 2009 Year End Results 2BioMS Medical Announces 2009 Year End Results 3BioMS Medical Announces 2009 Year End Results 4BioMS Medical Announces 2009 Year End Results 5BioMS Medical Announces 2009 Year End Results 6BioMS Medical Announces 2009 Year End Results 7BioMS Medical Announces 2009 Year End Results 8BioMS Medical Announces 2009 Year End Results 9BioMS Medical Announces 2009 Year End Results 10PharmAthene to Host Year-End 2009 Earnings Conference Call and Webcast on Tuesday, March 23, 2010 2PharmAthene to Host Year-End 2009 Earnings Conference Call and Webcast on Tuesday, March 23, 2010 3Paul Goodfellow, PhD, Awarded First GCF/Claudia Cohen Prize for Outstanding Gynecologic Cancer Researcher 2Paul Goodfellow, PhD, Awarded First GCF/Claudia Cohen Prize for Outstanding Gynecologic Cancer Researcher 3Paul Goodfellow, PhD, Awarded First GCF/Claudia Cohen Prize for Outstanding Gynecologic Cancer Researcher 4Paul Goodfellow, PhD, Awarded First GCF/Claudia Cohen Prize for Outstanding Gynecologic Cancer Researcher 5Shire Receives INTUNIV (TM) Paragraph IV Notice Letter From Teva Pharmaceuticals 2Shire Receives INTUNIV (TM) Paragraph IV Notice Letter From Teva Pharmaceuticals 3Shire Receives INTUNIV (TM) Paragraph IV Notice Letter From Teva Pharmaceuticals 4
... the Best Places to Work in IndustryABBOTT PARK, Ill., May 29 ... on The Scientist magazine,s "Best Places to Work in ... of Large Companies (more than 5,000 employees). This is the ... The Scientist first started ranking companies in 2003. This ...
... Mylan Inc. (Nasdaq: MYL ) today ... U.S. Food and Drug Administration (FDA) for its Abbreviated ... mg (base).Montelukast Sodium Tablets are the generic version of ... of approximately $2.6 billion for the 12 months ending ...
... CAMBRIDGE, Mass.--MIT and Boston University engineers have designed cells that ... which a series of genes are activated in a specific ... chips, could be used to count the number of times ... stages. They could also serve as biosensors that count exposures ...
Other Biology Technology:Abbott Named One of the Top 10 Companies for Scientists 2Abbott Named One of the Top 10 Companies for Scientists 3MIT, BU engineer cellular circuits that count events 2MIT, BU engineer cellular circuits that count events 3
... Performance, 5 ml. The same high ... Streptavidin columns for fast, reliable purification ... Tricorn 5/50 GL, XK 16/20, or ... are required.Extremely useful for exploiting either ...
Luminometers...
...
... System is ideal for developing single and ... system contains the new, improved, and user ... user can design specific templates for commercial ... fully integrated graphing and data regression capabilities; ...
Biology Products: