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Tag: "grasses" at biology news

UBC researchers reveal dwarf aquatic plants' hidden ancestry

...aquatic plants previously thought to be related to grasses and rushes. The discovery clarifies what may be one of the biggest misunderstandings in botanical history. "It’s a classic case of mistaken identity," says Sean Graham, an associate professor and researcher with the UBC Botanical Garden and Centre ...

Global changes alter the timing of plant growth, scientists say

...om 1999 through 2003. "Under today's conditions, grasses flower early in the growing season and wildflowers...d to these changes by flowering earlier, while the grasses flowered later. This caused the two groups to overlap in their seasonality, where under current cond...

More than drought affecting wheat yields

...and Allen believe the Conservation Reserve Program grasses throughout the region also might harbor the wheat curl mite. "We don't have a good understanding of the wheat curl mite and its ecology," Rush said. "It holds on some grasses, but there's lots of work to be done to understand what happens with these...

Biofuels researcher searches for new sources

...ropping system with winter cereals and warm season grasses like winter triticale and sweet sorghum, can be ad...-cropping system," Chen explained. "Even perennial grasses like switchgrass might be grown on marginal lands or lands retired from the Conservation Reserve Pro...

It's all in the genes

...dscapes in which they are introduced. For example, grasses that are genetically altered to prevent weed growth could pass that resistance along to exotic plants, which then might take over a community and change the evolution of that ecosystem. More than 50 researchers from the United States, Canada and Aus...

Biodiversity key to sustainable biofuel according to University of Minn. researcher's findings

... of which was randomly planted with 1-16 perennial grasses and other prairie plants. Over 12 years, rainfall during the growing season varied more than twofold and average daily high temperatures ranged from 21.5 C to 24.4 C. Stability was dependent on diversity and root mass. Roots store nutrients and buffe...

Not just the birds

...imentation, the researchers found gramanoids -- or grasses -- out-competed the slower growing dwarf shrubs and forbs. The islands with foxes had more dwarf shrubs and forbs, while those with no foxes were dominated by grasses. Even when researchers took into account differences in island size and distances...

The evolution of food plants: Genetic control of grass flower architecture

...inflorescence architecture because seeds of cereal grasses (e.g. rice, wheat, maize) provide most of the worl...e the ra2 expression pattern is conserved in other grasses including rice, barley, and sorghum". Perspective : Branching Out: The ramosa Pathway and the Evol...

Research: Snails were overlooked contributors to marsh destruction

...asted from 1999 to 2001, weakened and killed marsh grasses such as cordgrass, or Spartina alterniflora, so ex...ere blamed for stressing cordgrass and other marsh grasses beyond their limits. Silliman and four other authors of the Science paper don't dispute the drought...

Chernobyl: The true scale of the accident

...animals. Radioactive iodine, rapidly absorbed from grasses and animal feed into milk, was an early concern an...l countermeasure was removing contaminated pasture grasses from animal diets and monitoring milk for radiation levels. Treatment of land for fodder crops, clea...

Did humans cause ecosystem collapse in ancient Australia?

...y have altered the ecosystem of shrubs, trees, and grasses to the fire-adapted desert-scrub of today. The work is published in the July 8, issue of Science. The scientists plotted diet changes over 140,000 years of two species of large, flightless birds--the now-extinct Genyornis and the surviving emu (Drom...

Hybrid grass may prove to be valuable fuel source

... in early spring and burned for fuel. Rhizomatous grasses such as Miscanthus are very clean fuels, said Dohleman, who is studying for a doctorate in plant biology. Nutrients such as nitrogen are transferred to the rhizome to be saved until the next growing season, he said. Burning Miscanthus produces only ...

Wild grasses and man-made wheats advance research capabilities

...etics has 716 lines of wheat relative species. The grasses originated in Turkey and were collected in 1992 as a joint project between Texas A&M University and Centro Internacional de Mejoramiento de Maiz y Trigo, (The International Maise and Wheat Improvement Center) better known as CIMMYT. "This is a g...

$6.5 Million Grant for Microarray Center at Yale School of Medicine

...ournal Nature. "We've shown that corn and related grasses have either none, some, or a lot of ramosa1 gene activity, and that these different levels of activity have a big impact on the architecture of the plants," says Dr. Robert Martienssen of Cold Spring Harbor Laboratory, who led the study. "The ramosa1...

The genetic origins of corn on the cob

...ournal Nature. "We've shown that corn and related grasses have either none, some, or a lot of ramosa1 gene activity, and that these different levels of activity have a big impact on the architecture of the plants," says Dr. Robert Martienssen of Cold Spring Harbor Laboratory, who led the study. "The ramosa1...

Grass makes environmentally friendly biofuel

...a comparison of wood pellets with various mixes of grasses and the BTUs (British Thermal Units) produced per ...an be grown on marginal farmland. "Any mixture of grasses can be used, cut in mid- to late summer, left in the field to leach out minerals, then baled and pel...

Whole genome fine map of rice completed

...em, 17 pairs happened before the divergence of the grasses from other flowering plants. More importantly, the on-going duplications of single genes provided a unlimited source of raw materials for gene genesis, creating differences among the grass family. The Chinese Superhybrid Rice Genome Project, initiat...

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