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Tag: "varieties" at biology news

Finding rewrites the evolutionary history of the origin of potatoes

...d DNA markers in 261 wild and 98 cultivated potato varieties to assess whether the domestic potato arose from a single wild progenitor or whether it arose multiple times - and the results were clear, says David Spooner, the USDA research scientist who led the study. "In contrast to all prior hypotheses of mul...

Some good news for the world's poor

... farmers' income. Second, the diffusion of modern varieties results in lower food prices, as demonstrated in s... Third, the productivity consequences of improved varieties resulted in greater demand for labor and wages. For example, earlier research found that the poor be...

Worms know bad food when they smell it

...gate through, allowing them to choose from several varieties of bacteria. "Now we could do things like compare the good bacteria they know and the bad bacteria they know to two completely unfamiliar bacteria that they've never seen before," Bargmann explained. "Those experiments let us figure out that they lea...

Climate change: The rice genome to the rescue

...rt is allowing scientists to both develop new rice varieties faster and with the specific characteristics neede...rice production. "We need to start developing rice varieties that can tolerate higher temperatures and other aspects of climate change right now," he said. "For...

Evolutionary biology research techniques predict cancer

... inside the tumors. Essentially, they counted cell varieties and measured the genetic difference, or divergence, between those varieties. "Simply put, we took ecology measures of species diversity and translated them into measures of cell diversity within tumors," Maley says. The found a striking correlation b...

Researchers create pigs that produce heart-healthy omega-3 fatty acids

... inside the tumors. Essentially, they counted cell varieties and measured the genetic difference, or divergence, between those varieties. "Simply put, we took ecology measures of species diversity and translated them into measures of cell diversity within tumors," Maley says. The found a striking correlation b...

Human albumin from tobacco plants

...tracted is not sufficient. However, the commercial varieties of tobacco are some 30 times more productive in terms of biomass. Despite the advantages demonstrated by the experts, there is still a long way to go. Involving, as it does, a protein that is intravenously injected into patients, it has to be thorou...

New DNA 'fingerprinting' technique separates hemp from marijuana

...chnique has the potential to distinguish marijuana varieties as well," said Weiblen. "It has implications not just for separating hemp from marijuana in countries where hemp cultivation is permitted, but in establishing origins of seized drugs and, therefore, conspiracy in drug distribution networks. It also c...

Researchers release new variety of asparagus

...asparagus that offers a higher yield than previous varieties of the vegetable and boasts an excellent spear qua..., the asparagus industry in this country needs new varieties of the vegetable ?varieties that can compete with those produced in other countries where labor cost...

Growing crops to cope with climate change

...ve uncovered a gene that could help to develop new varieties of crop that will be able to cope with the changin... more difficult as the global climate changes. The varieties of crops grown in the UK are suited to the soil, seasons and traditional cool, wet summers. Later fl...

Virginia Tech helping to develop higher quality, disease-resistant wheat varieties

...e technologies will accelerate development of U.S. varieties that are durable to plant diseases, more productiv...ill be identifying and using DNA markers to select varieties possessing genes conferring durable resistant to powdery mildew, which causes annual crop loss of 10...

Minor mutations in avian flu virus increase chances of human infection

...lows researchers to assay hundreds of carbohydrate varieties in a single experiment," Berg said. "The glycan microarray offers a detailed picture of viral receptor specificity that can be used to map the evolution of new human pathogenic strains, such as the H5N1 avian influenza, and could prove invaluable in ...

Alternatives to the use of nitrate as a fertiliser

...type of pea can be extrapolated to the rest of the varieties of the species. Nevertheless, different ranges of ...d GDH enzymes in the root tissues of the different varieties of pea are increased when ammoniacal fertiliser is applied and, this increment is related to the con...

U-M scientists identify major psoriasis susceptibility gene

...e PSORS1 gene is actually one of over 20 different varieties (scientists call them alleles) of a gene called HLA-C. "In terms of our grocery store analogy, think of PSORS1 as one of 20 'brands' of HLA-C on the shelf," Elder says. Located on human chromosome 6, HLA-C is one of several genes in the major histo...

UF researchers develop ways to keep the bloom on the rose

...procedures from grower to consumer and better rose varieties developed by rose breeders," Nell said. "As seen with the reduction of bent neck over the last five to eight years, the results of this research programs are making a difference with consumers already. We hope to make even greater strides in the next...

Paleontologists learn how not to become a fossil

...more likely to become fossils than similarly sized varieties that lived out in the open. Perhaps fittingly, pa...erically," Jablonski said, adding back the missing varieties in their expected proportions. The fossil record of other organisms could be assessed in much the s...

Jefferson researchers building a better rabies vaccine

...tation occurring is extremely low. While different varieties of rabies virus exist, they maintain enough simila...ems with current vaccines is the fact that several varieties are used, depending on the particular species of animal. The scientists hope their vaccine will prov...

UCR researchers design chip that can improve citrus varieties

...Chip® Citrus Genome Array ?that can improve citrus varieties and suggest ways to better manage them. By helping...mation will be used to make the development of new varieties more efficient. "This industry-supported effort both added to and made use of publicly available c...

A more powerful and efficient engine for rice: the C3-C4 challenge

... be another 10?5 years after that before the first varieties are available. "Considering the urgent rice production challenges we face, we must start now on this work--there's no time to lose," Dr. Sheehy said. ...

Ready, set, mutate?and may the best microbe win

...e, and a new round of mutations occurred. Five new varieties ?themselves mutant forms of Q199R ?vied for final domination of the fermentor. Three of the five were driven to extinction within a couple of days, and the final two fought it out over the remaining three weeks of the test. The research included a r...

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