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Latest Plant sexuality Stories

2010-02-18 14:07:21

College of Biological Sciences researcher Helene Muller-Landau has developed a new theory explaining why some plant species produce a small number of large seeds while others produce a large number of small seeds. Using mathematical modeling, Muller-Landau demonstrated that plants having different size seeds can coexist when regeneration sites vary in stressfulness.  Species that produce large seeds (e.g., coconuts) have the advantage under stressful conditions -- such as drought or...

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2010-02-16 11:51:20

Plants and people alike face critical choices as they reproduce: to make a few big, well-provisioned seeds"”or babies--or many small, poorly-provisioned ones. Different species make strikingly different choices, resulting in a great diversity of life forms: Darwin's "endless forms most beautiful. Helene Muller-Landau, staff scientist at the Smithsonian Tropical Research Institute argues that these diverse strategies coexist because different levels of stress favor different choices. "I...

2010-02-01 17:48:04

Scientists from Kew's Millennium Seed Bank in the United Kingdom and the University of Graz, Austria, have developed a rapid, new method to diagnose seed quality non-invasively and in real time. The results are published online in the Proceedings of the National Academy of Sciences and have great significance for conservation ecology and agriculture. www.pnas.org/cgi/doi/10.1073/pnas.0914197107 By using infrared temperature measurement, seed viability results are achieved in less than two...

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2010-01-27 11:09:09

The innermost secrets of fire's role in the rebirth and renewal of forests and grasslands are being revealed in research that has identified plant growth promoters and inhibitors in smoke. In the latest discovery about smoke's secret life, an international team of scientists are reporting discovery of a plant growth inhibitor in smoke. The study appears in ACS's Journal of Natural Products, a monthly publication. "Smoke plays an intriguing role in promoting the germination of seeds of many...

2009-12-17 13:44:18

Feature: Wards of the roses Does flower water harbor potentially deadly bacteria? Do bedside blooms compete with patients for oxygen? Do bouquets pose a health and safety risk around medical equipment? These are some of the reasons given by many hospital wards in the UK to ban, or at least discourage, bedside bouquets. But is this anxiety justified, and what do patients feel about flower policies? To find out more, Giskin Day and Naiome Carter of Imperial College London surveyed the...

2009-11-25 07:26:00

NEW YORK, Nov. 25 /PRNewswire/ -- Reportlinker.com announces that a new market research report is available in its catalogue: Special Research on Vegetable Seed Market of China in 2009 http://www.reportlinker.com/p0165564/Special-Research-on-Vegetable-Seed-Market-of-China-in-2009.html As the primary component of planting cost, seeds are at the upstream of the industry of produce, and competitiveness of the seed market decides the initiative of competition in agriculture. China is a big...

2009-09-14 13:00:00

Researchers work on part of Darwin's 'abominable mystery' Approximately 120-130 million years ago, one of the most significant events in the history of the Earth occurred: the first flowering plants, or angiosperms, arose. In the late 1800s, Darwin referred to their development as an "abominable mystery." To this day, scientists are still challenged by this "mystery" of how angiosperms originated, rapidly diversified, and rose to dominance. (See the January 2009 issue of the American Journal...

2009-07-13 11:06:15

The appearance of many species of flowering plants on Earth, and especially their relatively rapid dissemination during the Cretaceous (approximately 100 million years ago) can be attributed to their capacity to transform the world to their own needs. In an article in Ecology Letters, Wageningen ecologists Frank Berendse and Marten Scheffer postulate that flowering plants changed the conditions during the Cretaceous period to suit themselves. The researchers have consequently provided an...

2009-06-11 10:59:02

As a result of stronger winds caused by global warming, seeds and pollen are being carried over longer distances. An increase in temperature of only a couple of degrees may increase the dispersal of plants in Northern forests and the spread of plant species into forest clearings after felling or forest fires.University of Helsinki researcher Anna Kuparinen headed the international research into the impact of global warming on seed and pollen dispersal. The goal was to learn whether global...

2009-04-16 14:30:00

Flowers Help Moms De-stress and Offer a Proven Pick-Me-Up for Mother's Day BOGOTA, Colombia, April 16 /PRNewswire-USNewswire/ -- For over a hundred years, mothers in the United States have been honored on Mother's Day, traditionally celebrated with beautiful bouquets of flowers. New research suggests that the positive power flowers have on feelings may be the real reason mothers prefer to be given beautiful blooms on their special day. According to a behavioral research study conducted by...


Latest Plant sexuality Reference Libraries

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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
cruet
  • A vial or small glass bottle, especially one for holding vinegar, oil, etc.; a caster for liquids.
This word is Middle English in origin, and ultimately comes from the Old French, diminutive of 'crue,' flask.
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