SEED

fertilized and ripened ovule, consisting of the plant embryo, varying amounts of stored food material, and a protective outer seed coat. Seeds are frequently confused with the fruit enclosing them in flowering plants as in the grains and nuts. The seed-bearing plants are the highest in the evolutionary scale; in lower plants (e.g., mosses and ferns) the spore is the agent of propagation. True seeds vary in size from the dustlike seeds of some orchids to the large seed contained in the coconut. The period of dormancy undergone by many seeds before germination also varies; the mangrove seed may sprout inside a fruit still hanging on the tree, while the seeds of a sacred lotus found embedded in peat in Manchuria were viable after 2,000 years. Long dormancy in some seeds is ensured by their extremely hard coats, which have to be scratched or split to force sprouting. In plant breeding, the source of pollen for fertilization is carefully controlled to produce the desired qualities in seed; under natural conditions a plant grown from seed may be quite different genetically from its maternal plant (see fertilization).

____________________

The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Seed
We found: 80158 results
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30875  

 

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books on: Seed  - 30875 results

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1.
Uncertain Peril: Genetic Engineering and the Future of Seeds
Book by Claire Hope Cummings; Beacon Press, 2008
Subjects: Agricultural Biotechnology--Political Aspects, Consumer Protection--Citizen Participation, Seeds--Biotechnology, Transgenic Plants--Economic Aspects, Transgenic Plants--Risk Assessment
...and weedy relatives. Local seed saving can tap into local knowledge...environmental and political changes than seed banks and that just because...in-situ collections, the seeds themselves are the primary value. In seed banks, more value is placed...
2.
Seeds of the Kingdom: Utopian Communities in the Americas
Book by Anna L. Peterson; Oxford University Press, 2005
Subjects: Amish Mennonites--United States--History, Catholic Church--El Salvador--History
...is the story of the mustard seed in Matthew 13:31-32, in...heaven is like a grain of mustard seed which a man took and sowed in...it is the smallest of all seeds, but when it has grown it is...don't know about the mustard seed, but I do know about the guas...
3.
Sword Blades and Poppy Seed
Book by Amy Lowell; Houghton Mifflin Company, 1925
Subjects: Poetry
CONTENTS SWORD BLADES AND POPPY SEED SWORD BLADES AND POPPY SEED 3 SWORD BLADES THE CAPTURED GODDESS 31 THE PRECINCT. ROCHESTER 34 THE CYCLISTS 39 SUNSHINE THROUGH A COBWEBBED WINDOW 41 A LONDON THOROUGHFARE 43 ASTIGMATISM 45 THE COAL PICKER 50...
4.
Sword Blades and Poppy Seed
Book by Amy Lowell; The Macmillan Company, 1914
Subjects: Poetry
CONTENTS SWORD BLADES AND POPPY SEED SWORD BLADES AND POPPY SEED 3 SWORD BLADES THE CAPTURED GODDESS 31 THE PRECINCT. ROCHESTER 34 THE CYCLISTS 39 SUNSHINE THROUGH A COBWEBBED WINDOW 41 A LONDON THOROUGHFARE 43 ASTIGMATISM 45 THE COAL PICKER 50...
5.
Seeds of Liberty: The Genesis of the American Mind
Book by Max Savelle; A.A. Knopf, 1948
Subjects: United States--History--Civilization
...which is generally cheating. The third by agriculture, the only honest way, wherein man receives a real increase of the seed thrown into the ground, in a kind of continual miracle, wrought by the hand of God in his favor, as a reward for his innocent...
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journal articles on: Seed  - 7237 results

       More journal Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Seed Weight Variability of Antelope Bitterbrush (Purshia Tridentata: Rosaceae)
Journal article by Pam G. Krannitz; The American Midland Naturalist, Vol. 138, 1997
Subjects: Botany, British Columbia Canada, Environment, Flowers & plants, Seeds, Weight
...for local fruit and seed development, potentially...resulting in smaller seeds. In birch (Betula...heavier and fewer seeds, but not more variable seed weights (Bergstroem...selecting the best seeds for restoration purposes when considering seed size as the primary...
2.
A Comparison of Vegetation and Seed Bank Community Structure in a Sand Prairie in Illinois, U.s.a
Journal article by Molly B. McNicoll, Carol K. Augspurger; The American Midland Naturalist, Vol. 164, 2010
Subjects: Banks, Community, Competition, Flowers & plants, Seeds, Studies
...1994) and/or alter seed banks through pulsed input of persistent seeds (Renne and Tracy...reduce the number of seeds incorporated into the seed bank (Chambers and...and production of seeds not incorporated into the seed bank. Measurements...
3.
Seed Banks in Diked and Undiked Great Lakes Coastal Wetlands
Journal article by Bradley M. Herrick, Michael D. Morgan, Amy T. Wolf; The American Midland Naturalist, Vol. 158, 2007
Subjects: Lakes, Seeds, Software packages, Studies
...the number of ungerminated seeds, the "seed bank" in this paper refers...yielded almost three times the seed density (X = 5024.2 seeds/m^sup 2^) as in undiked...averaged more species and more seeds than did seed banks of undiked wedands...
4.
Avian Seed Dispersal on Virginia Barrier Islands: Potential Influence on Vegetation Community Structure and Patch Dynamics
Journal article by Sheri A. Shiflett, Donald R. Young; The American Midland Naturalist, Vol. 164, 2010
Subjects: Bird migration, Seeds
...crossing the Chesapeake Bay. SEED COLLECTION Seeds were collected at various sites...collected the 6 I. frutescens seeds. Seed traps on Smith Island collected...number of species and quantity of seeds. Seed fluxes across several islands...
5.
Seed Dispersal of the Chinese Tallow Tree (Sapium Sebiferum (L.) Roxb.) by Birds in Coastal South Carolina
Journal article by Ian J. Renne, Sidney A. Gauthreaux Jr., Charles A. Gresham; The American Midland Naturalist, Vol. 144, 2000
Subjects: Animal behavior, Birds, Seeds, Trees
...was down (about 20% of all seed traps), we collected all seeds and husks below the trap and...defecate viable tallow tree seeds and that seed passage through the gut of...undoubtedly produced millions of seeds. Huge seed crops appear to have saturated...
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magazine articles on: Seed  - 6228 results

       More magazine Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Saving Seeds
Magazine article by Bob Wildfong; Alternatives Journal, Vol. 25, Winter 1999
Subjects: Biological diversity--Environmental aspects, Food crops--Environmental aspects, Seeds--Environmental aspects
...gardeners to purchase their seeds locally. And soon the seed industry began to narrow...the viability of the stored seeds. But seed quality can deteriorate even...germinate. To rejuvenate a seed stock, old seeds are planted, grown and the...
2.
Terminator Seeds: Monsanto Moves to Tighten Its Grip on Global Agriculture
Magazine article by Hope Shand; Multinational Monitor, Vol. 19, November 1998
Subjects: Agriculture, Biotechnology, Genetic engineering, Monsanto Co, Seeds
...protecting the technology patented seed." But seeds arent just another patented...farmers, depend on farm-saved seed and seeds exchanged with their neighbors...controls over half of the maize seed market, and Monsanto seeds are expected to cover 70 percent...
3.
The Seed Ball Project: Greening a Charred Landscape
Magazine article by Linda Clarkson; Green Teacher, Winter 2005
Subjects: Elementary school students, Environmental education, Forest & brush fires, Ignacio Elementary School-Colorado, LaDage, Gail, Planting, Seeds
...compost, softening the seed balls and allowing the seeds to sprout. Once the seeds...other ingredient for their seed balls: the seeds. It was important not to...project and ensured that the seed balls contained seeds that were appropriate for...
4.
Seeds of Discontent
Magazine article by Brian Halweil, Danielle Nierenberg, Curtis Runyan; World Watch, Vol. 15, January 2002
Subjects: Farmers--Interviews, Monsanto Co.--Cases, Patents--Cases, Schmeiser, Percy--Interviews, Seed industry--Cases, Transgenic plants--Cases
...I was planting my own seed saved from the previous...discover their canola seeds on your property? Schmeiser...And one tiny little seed can grow a plant that can produce up to 10,000 seeds every year. One little seed blowing in the wind can...
5.
Seeds of Doom: Around the World, Many Plant Species Rely on Specific Animals to Disperse Their Seeds Away from the Parent Plant. but Many of Those Animals Are Now Facing Extinction, Raising Fears of a Cascade of Further Extinctions, with Wide-Ranging Impacts on the Health of the World's Forests. Kara Moses Reports on the Impending 'Dispersal Crisis'
Magazine article by Kara Moses; Geographical, Vol. 83, August 2011
Subjects: Ecological research, Extinction (Biology)--Forecasts and trends, Forests and forestry--Natural history, Forests and forestry--United Kingdom, Forests--Natural history, Forests--United Kingdom, Plant populations--Forecasts and trends, Seed dispersal--Environmental aspects, Seed dispersal--Research, Seeds--Dispersal, Seeds--Environmental aspects, Seeds--Research
...scattered by exploding seed pods. But in tropical...than 95 per cent of seeds are dispersed by animals...plants with a reliable seed-dispersal service...responsible for carrying seeds, from birds and insects...dispersers, transporting seeds over long distances...are also critical seed carriers; studies...
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newspaper articles on: Seed  - 35652 results

       More newspaper Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Seed Growers Hurting
Newspaper article; The Register-Guard (Eugene, OR), August 31, 2009
Subjects: Farmers, Seed industry, Seeds
...youre a Willamette Valley grass seed grower. In that case, they...way Ralph Fisher of the Grass Seed Bargaining Association put it...director of research at Oregon Seeds in Albany: "This is the worst...Herb is president of the Oregon Seed Trade Association, the Oregon...
2.
Gone to Seed; HOME TRUTHS
Newspaper article; Western Mail (Cardiff, Wales), July 18, 2009
Subjects: Germination, Seeds
...break the dormancy of the seeds. Since most gardeners...with small amounts of seed, the same result can be achieved by placing the seeds in a polythene bag mixed...of various batches of seed vary, so can viability between individual seeds. There is still so much...
3.
Sowing the Seeds of Love
Newspaper article; Western Mail (Cardiff, Wales), January 7, 2006
Subjects: Seed industry
...is now possible to grow from seed a wider range of plants more...are the F1 hybrids grown from seeds resulting from a cross between...slightly more expensive, these seeds are superior in size, uniformity...performance. The quality of seed is the all-important starting...
4.
Production of Hybrid Rice Seeds Very Risky - Farmers
Newspaper article; Manila Bulletin, June 22, 2008
Subjects: Farmers, Rice, Seed industry, Seeds
...Production of Hybrid Rice Seeds Very Risky - Farmers...Kalinga Hybrid Rice Seed Growers Multipurpose...per sack of hybrid seeds, hybrid seed production looks lucrative...Compared to hybrid seed production, producing...palay or certified seeds is a lot simpler and...
5.
Associated Press Investigation Monsanto Keeps Tight Control on Seed Business
Newspaper article; Daily Herald (Arlington Heights, IL), December 17, 2009
Subjects: Biotechnology industries--Investigations, Biotechnology industries--Licensing agreements, Biotechnology industry--Investigations, Biotechnology industry--Licensing agreements, Gums and resins industry--Investigations, Gums and resins industry--Licensing agreements, Monsanto Co.--Investigations, Monsanto Co.--Licensing agreements, News agencies--Investigations, News agencies--Licensing agreements, Seed industry--Investigations, Seed industry--Licensing agreements, Soybean--Investigations, Soybeans--Investigations, The Associated Press--Investigations, The Associated Press--Licensing agreements
...company can have over seeds, the foundation of...Monsanto could raise its seed prices at will, which...cookies. The price of seeds is already rising...increased some corn seed prices last year by...from the companys seeds. Farmers and seed company owners agree...
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encyclopedia articles on: Seed  - 166 results

       More encyclopedia Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Seed
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...a protective outer seed coat. Seeds are frequently confused...size from the dustlike seeds of some orchids to the large seed contained in the coconut...dormancy undergone by many seeds before germination also varies; the mangrove seed may sprout inside a...
2.
Psyllium Seed
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
PSYLLIUM SEED sil e m: see plantain . ____________________ Copyright 2009 Columbia University Press. Used with the permission of Columbia University Press. All rights reserved.
3.
Germination
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...dormancy varies; the seed of some plants (e...immediately, but many seeds require a resting...The viability of seeds (their capacity to...percentage of viable seed decreases with age...light although some seeds require darkness and...unaffected by either the seed absorbs water and...
4.
Plant
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...ancestor, in turn, arose the seed plants. The plant kingdom...classes, because they both bear seeds, are often collectively called spermatophytes, or seed plants. The gymnosperms are...usually with one cotyledon per seed , scattered vascular bundles...
5.
Fruit
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...enclosing one or more seeds (e.g., the peach...to release the mature seed (dehiscent fruits) and...tiny achenes (miscalled seeds) outside a central pulpy...The Role of Fruits in Seed Dispersal The structure...facilitates the dispersal of its seeds. The "wings" of the...
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