Subscribe free to our newsletters via your
  Energy News  


Subscribe free to our newsletters via your




















FARM NEWS
New wheat genetic advancements aimed at yield enhancement
by Staff Writers
Amarillo TX (SPX) Feb 25, 2016


Single nucleotide polymorphisms, known as SNPs, are the most common type of genetic variation in a plant, animal or human. Each SNP represents a difference in a single DNA building block, called a nucleotide.

Texas A and M AgriLife Research is closing in on specific genetic traits in wheat that can help increase yields in the future.

The title of a recent paper published in the Crop Science journal, "Validation of Chromosomal Locations of 90K Array Single Nucleotide Polymorphisms in US Wheat," may leave some dazed and confused.

But lead scientist, Dr. Shuyu Liu, AgriLife Research small grains geneticist in Amarillo, said it simply means they are narrowing the knowledge gap as to where key traits are in the wheat genome and how to access them.

"Our goal is to develop improved wheat varieties with high yield capability and resilience to a variety of stressors across differing climates and water resource availability," Liu said.

The AgriLife Research study included teams led by Dr. Jackie Rudd and Dr. Amir Ibrahim, wheat breeders in Amarillo and College Station, respectively; Dr. Dirk Hays, plant geneticist in College Station; and Dr. Qingwu Xue, crop stress physiologist in Amarillo.

Their study included three wheat populations derived from two popular AgriLife Research cultivars, TAM 111 and TAM 112, and other diverse wheats.

Rudd said the importance of this research should not be lost in the technical jargon.

"We have talked about using genetic markers for many years now, but this research moves us from 'proof of concept' to actual practice in our TAM wheat germplasm," he said. "To be able to accelerate the movement of greenbug and wheat curl mite resistance from TAM 112 into new varieties is huge."

Single nucleotide polymorphisms, known as SNPs, are the most common type of genetic variation in a plant, animal or human. Each SNP represents a difference in a single DNA building block, called a nucleotide.

Those variations are found throughout the wheat DNA and act as biological markers, helping scientists locate genes that are associated with a certain trait or characteristic.

The international wheat community, including the U.S., has developed an array chip with 90,000 SNP markers, Liu said. Markers are used to tag the trait so it is easily identifiable with new lines of wheat containing the key genes.

The 90,000 SNP array chip has become a common genetic marker method used by wheat breeders and geneticists, but there are limitations. Of the 90,000 markers, only about 40,000 of them had been mapped onto chromosomes, he said.

Mapping SNPs in wheat can help to develop high throughput molecular markers for important traits, Liu said.

Silvano Ocheya, a doctoral student of Liu's who is completing his thesis research, has already mapped 6,000 of the SNPs, including those pinpointing drought tolerance and wheat streak mosaic virus characteristics, in one of the three mapping populations.

Liu's lab has also developed high throughput molecular markers for greenbug and wheat curl mite resistance.

The AgriLife Research study confirmed 13,000 previously mapped SNPs in their three wheat population crosses, and they newly mapped 2,190 unique SNPs.

Liu said the 15,000 SNPs they have confirmed are being used to study complex agronomic traits such as yield, yield components and heat tolerance, in addition to disease and insect resistance controlled by single dominant genes.

They are also studying the interaction between the genes and the environments.

"For instance, we are working to identify major genes controlling yield under dryland and irrigation conditions," Liu said. "Data is collected from multiple environments so we can focus on how major genes contribute to yield improvement under different climates."

All this information will help breeders incorporate key genes associated with the traits and get the new enhanced varieties to producers sooner, he said.

.


Related Links
Texas A and M AgriLife Communications
Farming Today - Suppliers and Technology






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

Previous Report
FARM NEWS
Africa's forests menaced by palm oil rush: NGO
Paris (AFP) Feb 23, 2016
Africa's tropical forests are threatened by a palm oil bonanza that has already razed millions of old-growth hectares in Southeast Asia, Greenpeace France warned Tuesday. The NGO called on European palm and rubber plantation giant Socfin, which controls vast tracts of tropical land in more than half-a-dozen African nations, to join other multinationals in adopted so-called "zero deforestatio ... read more


FARM NEWS
Third Sentinel satellite launched for Copernicus

Sentinel-3A poised for liftoff

New Satellite-Based Maps to Aid in Climate Forecasts

Consistency of Earth's magnetic field history surprises scientists

FARM NEWS
Sea level mapped from space with GPS reflections

Wirepas launches a dedicated connectivity product for beacons

Better, faster tsunami warnings possible with GPS

GPS tracking down to the centimeter

FARM NEWS
Humans settled, set fire to Madagascar's forests 1,000 years ago

Increasing drought threatens almost all US forests

Benefits of re-growing secondary forests explored through international collaboration

Drones learn to search forest trails for lost people

FARM NEWS
WELTEC Group Acquires 3.3 MW Biogas Plant

ONR engineers innovative research in synthetic biology

Best regions for growing bioenergy crops identified

Titan probes depths of biofuel's biggest barrier

FARM NEWS
New technique for turning sunlight into hydrogen

Michigan draws fire over clean energy plans

UTA researchers devise more efficient materials for solar fuel cells

KYOCERA Donates Solar Power Generating Systems to Nepal to Support Earthquake Reconstruction

FARM NEWS
Adwen Chooses Sentient Science For Computational Gearbox Testing

EU boasts of strides in renewable energy

Offshore U.K. to host world's largest wind farm

Germany aims to build wind energy reputation

FARM NEWS
Central Appalachia flatter as result of mountaintop mining

Adani's mega coal mine clears Australia environmental hurdle

'Miracle' rescue of four China miners after 36 days underground

Coal formation linked to assembly of supercontinent Pangea

FARM NEWS
Chinese tycoon blasted for criticising media controls

Flagship gallery show raises fears for Hong Kong arts

Spanish police search branch of China's ICBC bank in money laundering probe

Violence in Hong Kong 'inevitable' say city's new activists




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News








The content herein, unless otherwise known to be public domain, are Copyright 1995-2016 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.