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Latest Plant sexuality Stories

2012-04-11 22:26:37

Seed size is controlled by small RNA molecules inherited from a plant's mother, a discovery from scientists at The University of Texas at Austin that has implications for agriculture and understanding plant evolution. "Crop seeds provide nearly 70 to 80 percent of calories and 60 to 70 percent of all proteins consumed by the human population," said Z. Jeff Chen, the D.J. Sibley Centennial Professor in Plant Molecular Genetics at The University of Texas at Austin. "Seed production is...

Plants Mimic Scent Of Pollinating Beetles
2012-04-04 03:33:16

The color and scent of flowers and their perception by pollinator insects are believed to have evolved in the course of mutual adaptation. However, an evolutionary biologist from the University of Zurich has now proved that this is not the case with the arum family at least, which evolved its scent analogously to the pre-existing scents of scarab beetles and thus adapted to the beetles unilaterally. The mutual adaptation between plants and pollinators therefore does not always take place....

It's Official: Warm Weather Causes Flowers To Bloom
2012-03-22 12:16:28

Scientists have completed research in attempts to explain what  we see in our parks and gardens every year: with the onset of warmer weather comes blooming flowers and trees. Funded by the Biotechnology and Biological Sciences Research Council (BBSRC), scientists from the John Innes Center have investigated the effects of warm weather and global climate changes on flowering plants and trees. Their findings on this research will be published soon in the journal Nature. The research...

2012-03-09 02:35:04

Scientists have made fresh discoveries about the processes that govern plants' internal body clocks and help them adjust to changing seasons, triggering the arrival of flowers in spring Scientists have made fresh discoveries about the processes that govern plants' internal body clocks and help them adjust to changing seasons, triggering the arrival of flowers in spring. Researchers tested computer models of gene networks in a simple cress plant to determine the role played by a protein,...

Russian Researchers Claim They’ve Regenerated 32,000 Year-Old Plant
2012-02-22 05:43:22

According to a recent report in the New York Times, Russian scientists have successfully generating a living plant (Silene stenophylla) from the fruit of a species that went extinct in the last ice age some 32,000 years ago. The paper reported Monday that the plant´s fruit was apparently stowed away by an arctic ground squirrel in the wastelands of northeastern Siberia. Hidden beneath the permafrost of the frozen tundra for some 32 millennia, Russian researches recovered the almost...

2011-12-12 17:47:24

Dormant seeds in the soil detect and respond to seasonal changes in soil temperature by changing their sensitivity to plant hormones, new research by the University of Warwick has found. This sensitivity alters the depth of dormancy, indicating to the seed when it is the right time of year to germinate and grow. The seeds of common weeds can survive in the soil in a dormant state for years, in some cases decades, spelling issues for food security when they emerge to compete with crops....

2011-12-02 18:22:53

When seeds from the thale cress Arabidopsis thaliana mature, their cell nuclei reduce in size and the chromatin condenses Plant seeds represent a special biological system: They remain in a dormant state with a significantly reduced metabolism and are thus able to withstand harsh environmental conditions for extended periods. The water content of maturing seeds is lower than ten percent. Researchers from the Max Planck Institute for Plant Breeding Research in Cologne have now discovered...

2011-08-10 18:06:18

Road maintenance may accidentally spread the seeds of invasice plants, according to Penn State researchers. "The road graders that are used during these operations can act like a plow, pushing seeds along the road," said Emily Rauschert, senior project associate and applied ecologist in crop and soil sciences. "They can pick up seeds of an invasive grass and spread them several orders of magnitude further than the natural dispersal." The researchers created a computer simulation based on...

2011-05-18 16:19:06

The genetic 'wiring' that helps a seed to decide on the perfect time to germinate has been revealed by scientists for the first time. Plant biologists at The University of Nottingham have also discovered that the same mechanism that controls germination is responsible for another important decision in the life cycle of plants "” when to start flowering. Their discovery throws light on the genetic mechanisms that plants use to detect and respond to vital environmental cues and could be a...


Latest Plant sexuality Reference Libraries

30_1f12cae0cfa114ac8945564df871c6d8
2005-06-08 20:47:33

Iris is a genus of flowering plants with showy flowers ranging in color from gold, copper-red or yellow to white, blue, blue-violet, lavender, tan, maroon and purple. Pink and apricot colored irises have also been bred in some species. The name "Iris" can be applied to the genus or to any of the species within it. It is also applied to various subdivisions within the genus. Description There are many species of iris widely distributed throughout the northern temperate zone. Their...

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Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
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