Navigation Links
Historical increase in corn yield -- it's in the roots
Date:3/16/2009

Their approach involved the use of virtual plant computer simulation technologies. They modified an advanced crop model to take account of known effects on crop growth associated with varying leaf erectness and/or root system architecture. They then simulated consequences on yield for representative sites in the U.S. Corn Belt for a set of "hypothetical hybrids" varying in leaf and root characteristics.

The study revealed that the historical corn yield trend and its association with higher plant density was more likely related to change in root system architecture than to change in leaf erectness. While more erect leaf types could contribute to the effect in some high-yielding situations, changes in root systems to enhance capture of soil water at depth had the dominating effect. Results for simulations conducted for hypothetical hybrids that varied in root system characteristics were found to be consistent with a set of field experiments that reported yield response to density for hybrids released over the past 20 years.

"The use of dynamic crop models helped us to look beyond the clearly visible differences among hybrids in this time series of yield advance," says Hammer. "It enabled us to focus on the driving processes of crop growth that must be responsible for these effects. It is clear that as we move forward we need to look much harder at root systems and how they capture water."

In the study, the extra amount of water required for the 6t/ha historical yield increase was estimated as about 270mm. Further research is required to determine whether this has now positioned the corn crop near the limit of water resource availability or whether there remains opportunity for yield advance by further improvement in water capture.


'/>"/>

Contact: Sara Uttech
suttech@crops.org
608-268-4948
Crop Science Society of America
Source:Eurekalert

Page: 1 2

Related biology news :

1. Great Plains historical stability vulnerable to future changes
2. USF professor gives historical look at physiology and WWII air war
3. Historical photographs expose decline in Floridas reef fish, new Scripps study finds
4. Western diet linked to increased risk of colon cancer recurrence
5. Study finds Viagra increases release of key reproductive hormone
6. Springer increases publishing activities in South Korea
7. International team shows mercury concentrations in fish respond quickly to increased deposition
8. International team shows mercury concentrations in fish respond quickly to increased deposition
9. Weight gain between first and second pregnancies associated with increased odds of male second child
10. Mixing large doses of both acetaminophen painkiller and caffeine may increase risk of liver damage
11. Increase in ethanol production from corn could significantly impact
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/18/2014)... for evaluation of suspected genetic conditions, whole-exome sequencing ... including detection of a number of rare genetic ... to a study appearing in JAMA . ... the American Society of Human Genetics annual meeting. ... regions of thousands of genes simultaneously using next-generation ...
(Date:10/17/2014)... news release is available in German . ... millions of sperms every day in order to reproduce? And ... are the topic of the latest issue of the research ... 2014). The evolutionary biologist Steven Ramm from Bielefeld University Bielefeld ... it is not unusual for a female to copulate with ...
(Date:10/16/2014)... constantly wages war on the human body. Battles ... stalemate. In pancreatic cancer, this stalemate—known as tumor ... aggressively malignant, a phenomena that is poorly understood. ... the laboratory of Salvatore Torquato, a Professor of ... conditions surrounding tumor dormancy and the switch to ...
Breaking Biology News(10 mins):Whole-exome sequencing shows potential as diagnostic tool 2Sperm wars 2Modeling tumor dormancy 2
... genes can reveal not only the "lifestyle" of marine microbes ... finding means researchers may be able to predict the types ... the genomes of just a few dominant species, according to ... Wales. As well, it may reveal new insights into the ...
... removed during liposuction conceal versatile cells that are more ... cells, or iPS cells, than are the skin cells ... study from Stanford,s School of Medicine. "We,ve identified a ... of the research, Michael Longaker, MD, who has called ...
... for 50 percent of the fish consumed globally, according to ... while the industry is more efficient than ever, it is ... large amounts of feed made from wild fish harvested from ... the Sept. 7 online edition of the Proceedings of ...
Cached Biology News:Genomes reveal bacterial lifestyles: Research 2'Liposuction leftovers' easily converted to IPS cells, Stanford study shows 2'Liposuction leftovers' easily converted to IPS cells, Stanford study shows 3Half of the fish consumed globally is now raised on farms, study finds 2Half of the fish consumed globally is now raised on farms, study finds 3
(Date:10/20/2014)... , Oct. 20, 2014  GenVec, Inc. (NASDAQ: ... P. Horovitz , Ph.D., from its board of directors effective ... in August 2003, and served as its chairman from June ... on the Nominating and Corporate Governance and Audit Committees of ... more than a decade of dedicated service to GenVec, and ...
(Date:10/19/2014)... The Latin American hardware encryption display market report defines ... and forecast of revenue. This market was valued at ... $2,366.8 million by 2018, at a CAGR of 70.3% ... of the Latin American hardware encryption market report to ... also provides a glimpse of the segmentation of the ...
(Date:10/19/2014)... Asia-Pacific Speech Analytics market report defines and segments the ... of revenue. This market is estimated to grow from ... at a Compound Annual Growth Rate (CAGR) of 23.9% ... of the Asia-Pacific Speech Analytics market report to get ... provides a glimpse of the segmentation in the market, ...
(Date:10/18/2014)... October 19, 2014 The “Human ... Acting, Intermediate Acting, Premixed), Modern Human Insulin (Rapid ... Levemir, NovoRapid, Novomix, Tresiba, Others) - Forecast to ... drivers, restraints, challenges, opportunities, current market trends, and ... with the estimates and forecasts of the revenue ...
Breaking Biology Technology:Zola P. Horovitz To Retire From GenVec Board 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 2Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 3Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 4Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 5
... - - ... -, SOUTH SAN FRANCISCO, Calif., Aug. 17 ... U.S. Food and Drug,Administration (FDA) has approved Zingo(TM) (lidocaine ... analgesia to reduce the pain associated with venous access,procedures, ...
... (Nasdaq: IDEV ) today announced that it ... and Drug Administration (FDA) for,VALSTAR(R). VALSTAR, a sterile ... product approved by the FDA for therapy of,bacillus ... bladder. VALSTAR was removed from the market ...
... Union announced today they,have entered into a five-year ... in Region 3 to provide RealTime1(TM) (RT1(TM)),software at ... and the,US Virgin Islands. The Region 3 Genetics ... funding for another five-year period.,With this renewal, Region ...
Cached Biology Technology:Anesiva Receives FDA Approval for Zingo(TM), a New, Innovative Product to Reduce Pain Associated with Needle Insertion Procedures in Children 2Anesiva Receives FDA Approval for Zingo(TM), a New, Innovative Product to Reduce Pain Associated with Needle Insertion Procedures in Children 3Anesiva Receives FDA Approval for Zingo(TM), a New, Innovative Product to Reduce Pain Associated with Needle Insertion Procedures in Children 4Anesiva Receives FDA Approval for Zingo(TM), a New, Innovative Product to Reduce Pain Associated with Needle Insertion Procedures in Children 5Indevus Receives Approvable Letter From FDA for VALSTAR(R) for Bladder Cancer Therapy 2Indevus Receives Approvable Letter From FDA for VALSTAR(R) for Bladder Cancer Therapy 3Indevus Receives Approvable Letter From FDA for VALSTAR(R) for Bladder Cancer Therapy 4Digital Union's RT1(TM) Software Creates Telegenetics Network for Region 3 Genetics Collaborative 2
... experiment based analysis package designed with easy ... and powerful functionality., Image acquisition interface is ... easy image capture. Sequential and dynamic ... Saturation Warning Single ...
...
ANTI DIPHTH TOX A SU...
... Taq DNA Polymerase is a thermostable recombinant ... in primer extension and other molecular biology ... which provides easy and quick identification of ... allows confirmation of complete mixing. The inert ...
Biology Products: