Tuesday, October 21, 2014

Food Crops News 254

Food Crops News, Cassava New;Tin Nông nghiệp Việt Nam
Hoàng Kim, Chào ngày mớiCây Lương thựcHọc mỗi ngày,  
Update of Food Crops News from  17 Oct. to 21 Oct., 2014.
New Publication from CIAT:  Reinhardt Howeler 2014. Reference manual:
Sustainable Soil and Crops Management of Cassava in Asia
 

 
food crops
Daily update October 21, 2014
NEWS

Click Green
Government to axe solar farm subsidies in favour of biomass crops
Farmers will lose the right to claim subsidies for fields filled with solar panels under new Government plans to ensure more agricultural land is ...
Google Plus Facebook Twitter Flag as irrelevant
Farmers get look at cover crops
The cost is $30 per acre to plant cover crops, food plots, native grasses, grasses, small grains, and small legumes. The sprayer costs $10 per acre.
Google Plus Facebook Twitter Flag as irrelevant

The Korea Herald
[Michael Koch] Why Korea, and the world, must protect crop diversity
However, there are approximately 7,000 crop species in existence, and ... Founded by the Food and Agriculture Organization of the United Nations ...
Google Plus Facebook Twitter Flag as irrelevant
Bob Beyfuss: Fall food and critters
Usually the season following a bumper crop year for wild apple, hickory, oak, ... Last year's ample food supply has allowed many small mammals the ...
Google Plus Facebook Twitter Flag as irrelevant

Bowling Green Daily News
Building a new food system takes time & cooperation from all involved
Specialty crops don't beat tobacco or cash crops, including corn and .... to food pantry clients in addition to the crops the nonprofit's community garden ...
Google Plus Facebook Twitter Flag as irrelevant
Ag bill brings changes for state's farmers, farmers markets
Moving forward, farmers who grow eligible crops must choose between Price Loss Coverage or Agricultural Risk Coverage; the first pays farmers if ...
Google Plus Facebook Twitter Flag as irrelevant

Raxanreeb Online
SOMALIA: Hot, dry conditions causing crisis in the south west regions
In agropastoral areas, almost no crops were harvested in June/July. ... Additional humanitarian food assistance is needed between now and the start ...
Google Plus Facebook Twitter Flag as irrelevant

Independent Online
Ebola wave threatens food security
He said as world food demand increased, farmers were using larger crop areas. “Beginning in early 2000 crop area has increased as much as 10 ...
Google Plus Facebook Twitter Flag as irrelevant
“World Food Day promotes Agroecology not GE technology”
“Access to safe nourishing food is a basic human right,” said Claire ... Failures of modern crops overuse of pesticides, rising debt, emergence of super ...
Google Plus Facebook Twitter Flag as irrelevant

eco-business.com
Seaweed problem could provide biofuel solution
Biofuels are controversial because they are often produced from food crops or grown on farmland, but a common algae found in abundance around ...
Google Plus Facebook Twitter Flag as irrelevant
food crops
Daily update October 20, 2014
NEWS
 

Pittsburgh Post-Gazette
As harvest wraps up, farmers tally up their crops
The Schramms' two biggest crops are sweet corn, by acreage, and ... Big food companies have been running on a tight margin for the last few years ...
Google Plus Facebook Twitter Flag as irrelevant
 

Breeding soybeans that can tolerate heat, drought

Date:
October 17, 2014
Source:
South Dakota State University
Summary:
Hot, dry conditions can wreak havoc on a field of soybeans. Now research is uncovering the molecular mechanisms that lead to drought and heat tolerance. This will help breeders develop soybean varieties that can survive heat and drought.

Graduate student Aayudh Das checks the soil moisture in soybeans that are subjected to heat and drought stress, as part of South Dakota State University research to increase the plants’ ability to withstand these environmental conditions. The project is supported by the South Dakota Soybean Research and Promotion Council.
Credit: Image courtesy of South Dakota State University
Hot, dry conditions can wreak havoc on a field of soybeans. According to the National Center for Soybean Technology, "drought is the greatest threat to profitability."
Work underway at South Dakota State University may change that.
Assistant professor Jai Rohila of the biology and microbiology department is uncovering the molecular mechanisms that lead to drought and heat tolerance. This will help breeders develop soybean varieties that can survive heat and drought.
"Ultimately our goal is to help the farmers in the field," Rohila said.
To do this, he is working with University of Minnesota soybean breeder Jim Orf, who provided Rohila with two varieties of soybeans, one that has greater tolerance to hot, dry conditions, and another that is susceptible. The project, which began in 2010, is supported by the South Dakota Soybean Research and Promotion Council.
"Drought and heat are very complicated," Rohila said, because multiple genes affect the plant's physiological and biochemical response to environmental stressors. "I am going to build a bridge between the physiology and the gene discovery."
By comparing the two soybean varieties, Rohila and graduate student Aayudh Das hope to identify the key genes that lead to increased tolerance. Genes regulate the expression of proteins and chemical signaling pathways that determine the plant's response to heat and lack of water.
"We study not one gene at a time, but many," said Rohila. "With a global approach, we can nail down many molecular players at a single time."
Das has found 90 proteins that are differentially expressed during drought and heat conditions in the tolerant variety. These proteins then interact with enzymes that affect the plant's metabolism including its ability to produce carbohydrates, lipids and various metabolites including amino acids.
A drought-stressed soybean plant, for instance, closes its pores or stomata to prevent water from escaping; however, this action has a cost -- it limits the plant's ability to take in carbon dioxide and ultimately to make the carbohydrates it needs, Das explained.
In comparing enzyme levels in the two soybean varieties, he identified two enzymes which are up regulated significantly in the variety that performs better under heat stress.
"Up regulation of these enzymes also protects other enzymes," he said, which then helps the plant tolerate heat. "This was an unexpected discovery."
Though the researchers have more work to do, Das explained that the next step will be to see if overexpressing these enzymes can further protect the soybean plant.

Story Source:
The above story is based on materials provided by South Dakota State University. Note: Materials may be edited for content and length.

Cite This Page:
South Dakota State University. "Breeding soybeans that can tolerate heat, drought." ScienceDaily. ScienceDaily, 17 October 2014. <www.sciencedaily.com/releases/2014/10/141017183446.htm>.
 

Related Stories


Researchers Fight World Hunger by Mapping the Soybean Genome

Feb. 1, 2010 — A team of researchers recently completed a study identifying 1.1 million base pairs of DNA in the soybean genome, including more than 90 distinct traits that affect plant development, productive ... full story
 
 

Video yêu thích 
http://www.youtube.com/user/hoangkimvietnam

Trở về trang chính 
hoangkim vietnam, hoangkim, hoangkimvietnam, Hoàng Kim, Ngọc Phương NamChào ngày mới Thung dung, Dạy và học, Cây Lương thực, Tin Nông nghiệp Việt Nam, Food Crops, Cassava in Vietnam, VietnamAfricaCassavaRice, Khát khao xanh, DayvahocHọc mỗi ngày,  Danh nhân Việt , Food Crops News, Điểm chính, CNM365, Kim LinkedIn, KimTwitter, KimFaceBook  Đọc lại và suy ngẫm, Việt Nam tổ quốc tôi, Tình yêu cuộc sốngThơ cho con