Agriculture
Seeds of the Future
Springing forward
Earth-Friendly Fabrics
Amphibians
Frogs and Toads
Salamanders
Toads
Animals
Cool Penguins
A Jellyfish's Blurry View
G-Tunes with a Message
Behavior
Diving, Rolling, and Floating, Alligator Style
Memory by Hypnosis
Taking a Spill for Science
Birds
Nightingales
Owls
Cranes
Chemistry and Materials
Batteries built by Viruses
A Framework for Growing Bone
Small but WISE
Computers
Lighting goes digital
A Light Delay
The science of disappearing
Dinosaurs and Fossils
The bug that may have killed a dinosaur
A Really Big (but Extinct) Rodent
Meet the new dinos
E Learning Jamaica
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Life trapped under a glacier
Rocking the House
Greener Diet
Environment
Animal CSI or from Science Lab to Crime Lab
The Birds are Falling
Antarctica warms, which threatens penguins
Finding the Past
Ancient Art on the Rocks
The Puzzle of Ancient Mariners
A Human Migration Fueled by Dung?
Fish
Sting Ray
Catfish
Eels
Food and Nutrition
Packing Fat
The mercury in that tuna
Healing Honey
GSAT English Rules
Problems with Prepositions
Who vs. That vs. Which
Capitalization Rules
GSAT Exam Preparation Jamaica
How are students placed after passing the GSAT exam
Mastering The GSAT Exam
GSAT stars reap scholarship glory
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
GSAT Exam Preparation
GSAT Mathematics
Math is a real brain bender
Deep-space dancers
Secrets of an Ancient Computer
Human Body
Attacking Asthma
A Fix for Injured Knees
Surviving Olympic Heat
Invertebrates
Bedbugs
Snails
Tapeworms
Mammals
African Ostrich
Cats
Bulldogs
Parents
Children and Media
Choosing a Preschool: What to Consider
Raise a Lifelong Reader by Reading Aloud
Physics
The Pressure of Scuba Diving
Project Music
The Particle Zoo
Plants
Getting the dirt on carbon
Seeds of the Future
Farms sprout in cities
Reptiles
Caimans
Iguanas
Geckos
Space and Astronomy
Phantom Energy and the Big Rip
Solving a Sedna Mystery
A Great Ball of Fire
Technology and Engineering
Switchable Lenses Improve Vision
Beyond Bar Codes
Supersuits for Superheroes
The Parts of Speech
What is a Noun
Pronouns
What is a Preposition?
Transportation
Morphing a Wing to Save Fuel
Troubles with Hubble
How to Fly Like a Bat
Weather
Either Martians or Mars has gas
A Change in Climate
The solar system's biggest junkyard
Add your Article

Flower family knows its roots

Jewelweeds, or Impatiens, are pretty flowers that grow in wet, shady spots all over the Northern Hemisphere. According to a recent experiment, they seem to know their own flower family. The experiment suggests that these flowers can recognize each other—or at least, recognize whether or not they came from the same mother plant. Together with other experiments, these results show that if the plants are recognizing their kin, it’s not through their leaves, it’s through the roots. Guillermo P. Murphy and Susan Dudley are a pair of botanists, or scientists who study plants, from McMaster University in Hamilton, Canada. In this experiment, they planted jewelweeds in pots with either siblings or strangers. Sibling plants were grown from seeds that came from the same mother plant. Stranger plantswere grown from seeds from different plants. If people were plants, then this experiment would be like showing that a person behaves differently if he grows up next to his brother than if he grows up next to a stranger. When jewelweeds were planted in pots with strangers, the plants started to grow more leaves than if they had been planted alone. This response suggests that plants are competing with strangers for sunlight, since a plant with more leaves can receive more light—and make more food. Impatiens normally grow in the shade, where sunlight is scarce. When jewelweed seedlings were planted with siblings, they grew a few more branches than they normally would if they were alone — but they did not start growing lots of extra leaves. This behavior suggests the plants are more likely to share resources, rather than compete. The plants only responded this way when they shared soil. If stranger seedlings were planted in different pots and placed next to each other, for example, they did not grow more leaves. This difference shows that the plants must use their roots to detect sibling plants in the same soil. “This is the first paper that shows that plants are responding above ground to sibling roots,” Murphy told Science News. Impatiens plants are not the first plants that botanists have studied for family recognition. In 2007, Dudley and her team studied the Great Lakes sea rocket, a plant that grows on the beach—where it may be hard to get fresh water. In that experiment, the botanists observed that when sea rockets were planted with siblings, they tolerated each other. But when they were planted with strangers, the sea rockets reacted by working extra hard to grow lots of roots, but not extra leaves. Dudley says this behavior makes sense because sea rockets, on the beach, get plenty of sun but struggle for water—so when they’re threatened, they compete for water. Impatiens, on the other hand, have plenty of water but have to compete for sunshine. The different types of plants may react in different ways, but they have one thing in common: the roots. In both experiments, on Impatiens and sea rockets, the key was the shared soil—and other plant species may turn out to show similar behavior. These experiments, as well as earlier experiments, suggest “the phenomenon is quite common," says Hans de Kroonof, an ecologist in the Netherlands. POWER WORDS (from the Yahoo! Kids Dictionary) seedling A young plant that is grown from a seed botany The science or study of plants ecology The science of the relationships between organisms and their environments impatiens Any of various plants of the genus Impatiens, which includes the jewelweed.

Flower family knows its roots
Flower family knows its roots








Designed and Powered by HBJamaica.com™