Navigation Links
Do long-lived crops differ from annual crops in their genetic response to human domestication?
Date:9/27/2011

one of the challenges to domesticating long-lived species is that they have especially long juvenile phases. This imposes limits on farmers because they have to wait years before they can evaluate, select, and cultivate fruits, in contrast to annuals that can be grown from seed every year. Moreover, like many trees in nature, perennial tree crops are often obligate outcrossers, requiring pollination from another individual. Farmers have gotten around these "obstacles" by clonally propagating individuals with desirable traits.

While clonal propagation may seem like it would result in lower genetic variation, the authors observe that clonal propagation and a long juvenile phase means perennial tree-crops have actually gone through fewer sexual cycles since domestication and thus have remained closer, genetically, to their wild progenitors. Indeed, perennial fruit crops retain an average of 95% of the (neutral) genetic variation found in their wild counterparts, compared with annual fruit crops which retain about 60%.

Interspecific hybridization is very common in tree species in nature, and this ability to readily hybridize is an important trait in domestication -- once a hybrid is formed, it can become the basis for an entire new variety through clonal propagation. Thus, clonal reproduction can also result in rapid rates of change in domesticated systems because individuals with desirable traits can be reproduced exactly and extensively.

"The evolution of perennial plants under human influences results in significant changes in reproductive biology," notes Miller, "and in many cases, perennial crops have reduced fertility in cultivation."

While many annual crops were domesticated from self-compatible wild ancestors, few perennial crops were derived from selfing wild populations. Thus, domesticated perennials often encounter mate limitation barriers when one or just a few clones are planted across a geographic region. However, p
'/>"/>

Contact: Richard Hund
rhund@botany.org
314-577-9557
American Journal of Botany
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. $40 million project to revitalize Africas orphaned crops announced
2. Manipulating plants circadian clock may make all-season crops possible
3. Testing the water for bioenergy crops
4. New genome sequence could improve important agricultural crops
5. Breeding ozone-tolerant crops
6. Plant immunity discovery boosts chances of disease-resistant crops
7. Plan to one day end the use of environmentally harmful chemicals on commercial crops developed
8. New genetic map of potato may lead to improved crops
9. Drought tolerance in crops: Shutting down the plants growth inhibition under mild stress
10. ISU research leads to understanding of how crops deal with stress -- yields biggest enemy
11. Combating plant diseases is key for sustainable crops
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Do long-lived crops differ from annual crops in their genetic response to human domestication?
(Date:6/29/2015)... 2015 Research and Markets( ... "Latin America Biomedical Sensors Market - Growth, Trends & ... The Latin America Biomedical Sensors market is estimated at ... over the period 2014-2020 The near future ... genetic formulation of each individual. These sensors can be ...
(Date:6/25/2015)... -- According to a new market ... Technology, Material (Optical Prism, Piezoelectric, Capacitive & Adhesives), ... & Geography - Global Forecast to 2014 - ... expected to reach $14,500.07 Million by 2020, at ... 76 market Tables and 109 Figures spread through ...
(Date:6/25/2015)...  TAKE Solutions Ltd., a global business technology solutions ... Patent and Trademark Office (USPTO) for its "Method for ... Clinical Accelerators to reduce the time taken to standardize ... without the accelerators), thus reducing time to market. ... the heart of the patented Clinical Data Standardization Process ...
Breaking Biology News(10 mins):Latin America Biomedical Sensors Market Report 2015-2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 2Fingerprint Sensors Market Worth $14,500.07 Million by 2020 3Fingerprint Sensors Market Worth $14,500.07 Million by 2020 4TAKE Solutions Awarded Patent By USPTO 2
... Biologists at the University of Pennsylvania studying oocytes in ... have demonstrated an unusual behavior in microRNA, or miRNA, ... the differentiated oocyte into pluripotent blastomeres of the embryo. ... RNAs, the so-called dark matter of the biological world. ...
... North Carolina State University have developed a "smart coating" that ... off infection. When patients have hip, knee or dental ... reject the implant. But the smart coating developed at NC ... implant. The coating creates a crystalline layer next to the ...
... release is available in Spanish . , ... beverages owe much of their smooth, delicious flavor to malt. ... at the Agricultural Research Service,s (ARS) malting barley laboratory in ... There, chemist Mark Schmitt and plant physiologist Allen Budde ...
Cached Biology News:Penn biologists determine microRNA activity is suppressed in mouse ovum 2Smart coating opens door to safer hip, knee and dental implants 2Secrets to superb malting barleys explored by ARS researchers 2
(Date:7/1/2015)...   Decision Resources Group finds that ... are its oral administration, alternative mechanism of action, ... rheumatologists. Otezla was the first oral therapy specifically ... psoriatic arthritis in the United States ... conventional oral treatments including disease-modifying antirheumatic drugs (DMARDs), ...
(Date:7/1/2015)... CHANDLER, Ariz. , July 1, 2015 ... announced it has earned three Gold, three Silver, and ... Business Awards gala held in Chicago ... recognized as the premier business awards program in the ... and recognizes our company,s strength in developing leaders, cultivating ...
(Date:7/1/2015)... YORK , July 1, 2015  UCB, ... G ), a global leader in designing, transforming, ... Aecus Innovation Award in recognition of their close ... efficiencies in UCB,s global business services (GBS) finance ... service providers and clients that work together effectively ...
(Date:6/30/2015)... WASHINGTON , June 30, 2015  NASA astronaut ... launch next month on his first mission to the ... interviews from 8 to 9 a.m. EDT Tuesday, July 7. ... Center in Star City, Russia . The ... on NASA Television highlighting his mission training. To ...
Breaking Biology Technology:Surveyed Rheumatologists Report That Otezla's Oral Administration is its Single Greatest Advantage Over Currently Available Treatment Options 2Surveyed Rheumatologists Report That Otezla's Oral Administration is its Single Greatest Advantage Over Currently Available Treatment Options 3Isagenix Earns Nine American Business Awards 2Isagenix Earns Nine American Business Awards 3UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 2UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 3UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 4UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 5NASA Astronaut Preps for First Space Station Mission, Available for Media Interviews 2
... for athletes, but researchers in the University of Florida,s ... power conversion efficiency from a new graphene solar cell ... one of industry,s great hopes for cheaper, durable solar ... use graphene, a single-atom-thick honeycomb lattice of carbon atoms, ...
... Calif., May 24, 2012 Synthetic Genomics Inc. (SGI), ... to solve a range of global challenges, today announced ... up and testing of newly identified and engineered algal ... the Imperial Valley near the Salton Sea, to test ...
... a commercial stage private oncology company, announced that by ... join the seven existing clinical centers that provide Novocure,s ... GBM. These fifteen clinical centers are among the leading ... is both the deadliest and most common form of ...
Cached Biology Technology:University of Florida physicists set new record for graphene solar cell efficiency 2Synthetic Genomics Inc. Purchases 81 Acre Site in South California Desert for Scale up and Testing of Innovative Algae Strains 2Novocure™ Certifies Eight Additional Clinical Centers of Excellence to Treat Most Common Brain Tumor with Tumor Treating Fields (TTFields) Therapy 2Novocure™ Certifies Eight Additional Clinical Centers of Excellence to Treat Most Common Brain Tumor with Tumor Treating Fields (TTFields) Therapy 3Novocure™ Certifies Eight Additional Clinical Centers of Excellence to Treat Most Common Brain Tumor with Tumor Treating Fields (TTFields) Therapy 4
...
... freezers , Ultima II Series ... storage, Ultima II represents the finest, most ... purpose and blood bank configurations, each Ultima ... control system with built-in voltage boost and ...
...
Verotoxin IIbeta (457)...
Biology Products: