It is common for people who support or defend genetically modified foods (GMOs) to argue something along the lines of, “What’s the big deal? Humans have been genetically modifying plants for thousands of years.”
Unfortunately, this claim can only be made by someone who either doesn’t understand seed breeding, or who is outright trying to deceive you. Here’s why…
Today, seeds are bred in only one of three ways: 1) in an open pollinated environment, 2) through a hybrid cross, and 3) through genetic modification. Let’s look at each, one at a time.
What are Open Pollinated Seeds?
Open pollinated (OP) seeds are seeds that are produced from natural, random, open pollination by wind, birds or insects, resulting in plants that are naturally varied.
Open pollinated seed saving is the oldest of the three methods of producing seed. Gardeners and farmers have been carefully selecting open pollinated seed varieties that have beneficial traits (like drought tolerance or good flavor) for as long as we have been doing agriculture. Almost all heirloom seeds are open pollinated.
When a gardener or seed breeder raises open pollinated plants, she has to keep pollen from other related varieties from entering the patch (generally accomplished with distance from the other variety).
If successful at keeping the open pollinated variety isolated, she or he will be able to select and save seeds from the very best plants in the patch, and trust that they will grow out next season with the same characteristics as their parent plant.
This is how most of the sweet, juicy, large fruits and vegetables we enjoy today (like corn, potatoes and squash) were bred and selected over many generations from their bitter, small, barely edible ancestors.
What are Hybrid Seeds?
Open Pollinated Seeds Vs Hybrids
The term “hybrid,” which you’ll often see in seed catalogs, refers to a plant variety developed through a specific, controlled cross of two parent plants. Hybrids are often spontaneously and randomly created in nature when open-pollinated plants are naturally cross-pollinated with other related varieties; plant breeders just direct the process to control the outcome.
The advantage of growing hybrid seed compared to inbred, open-pollinated lines comes from the ability to cross the genetic materials of two different, but related plants to produce new, desirable traits that can’t be produced through inbreeding two of the same plants.
For example, most of today’s livestock and companion animals were created through crossing different breeds to create hybrids—from Guernsey cows to hairless cats to the Labra-Doodle!
A whole new world of food crops became available as a result of hybridization, including Canola, grapefruit, sweet corn, canteloupes, seedless watermelons, “burpless” cucumbers, as well as tangelos, clementines, apriums, pluots and other unique foods.
In fact, in addition to edible novelties, today’s methods of hybridization are helping us breed all sorts of drought and pest tolerant plants that are helping us survive and adapt to a changing climate.
Hybrids have another advantage too. Developing a non-hybrid, open-pollinated variety using classic plant-inbreeding methods can take six to ten generations. That’s a lot of time!
However, using the method of controlled genetic crossing devised by Charles Darwin and Gregor Mendel in the mid-19th century (Remember those Mendel Box genetic tables from high school biology?), plant breeders can now produce hybrid seed that combines the desired traits of two pure parent lines in the first generation.
The oldest and simplest form of plant hybridization is corn detasseling. In this method, three rows of the father breed of corn are planted, and then one row of the mother, and over and over. The mother rows are detasseled (have their pollen removed) ensuring that any pollen they receive comes only from the father rows. The mother’s seeds can then be harvested as what is known as an F1 (first generation) hybrid.
Most hybrid seeds today are created in this low-tech, low-cost way, usually under row covers in isolated fields or in greenhouses.
There is another major distinction between open pollinated and hybrid seeds: If you grow out an open pollinated seed variety, keep it well isolated, and save it for seed, you will get offspring that are very similar to the parents. But, if you purchase an F1 hybrid and you save it for seed, and then attempt to grow it out, the next generation (F2) will be a very random mix of the parents DNA, and all the plants will be wildly different.
This means you can save open pollinated seeds, adapt them for your area over many growing seasons, and enjoy caring for the plants through their entire life cycle as they produce for you from generation to generation. But, if you grow an F1 hybrid seed and you like it, you must go back to the source you got it from if you wish to grow it out again.
Big seed companies like F1 hybrids because the process gives them proprietary ownership of each new variety. And because seed from F1 hybrid plants won’t produce uniform offspring, gardeners must purchase new seeds each year.
A Brief History of Hybrid Seeds
Hybrid seeds offer many benefits to U.S. and European farmers who have the money to buy them year after year, including greater yield, improved pest resistance, and more. However, the widespread introduction of hybrid seeds has been nothing but an unmitigated disaster for developing countries.
Launched in the 1960s, the Green Revolution aimed to increase grain yields worldwide by promoting the use of hybrid seed varieties that could be densely planted and required irrigation, mechanization and the heavy application of chemical fertilizers and pesticides to get higher yields.
The underlying objective of the Green Revolution was to increase farm productivity in countries perceived to be susceptible to communism because of rural poverty and hunger. But rather than raising production by alleviating the highly unequal land ownership in these countries, the Green Revolution favored technological fixes.
To accomplish this agenda, the U.S. government promised countries like India and Mexico that the “new miracle seeds” would produce more food and lift their farming peasants out of poverty. U.S. agricultural and chemical companies even gave away free bags of hybrid seed and fertilizer to entice small subsistence farmers to try them.
Unfortunately it was all a dirty trick.
When the peasant farmers grew these new hybrids, they were indeed more productive, even though they required more fertilizer and water. But when they collected and saved the seed for replanting the next season—as they had done for generations and generations—none of it grew true to the parent crop, little food grew, and these poor farmers, having none of their open-pollenated traditional varieties left viable, had no choice but to go back to the big companies to purchase the hybrid seeds again for planting year after year.
U.S. companies like Cargill intentionally disrupted the traditional cycle of open-pollinated seed saving and self-sufficiency to essentially force entire nations to purchase their seeds, and the agricultural chemicals required to grow them.
Most of these poor subsistence farmers never had to pay for seed before, and could not afford the new hybrid seeds, or the new petrochemical fertilizers they required, and were forced to sell their farms and migrate to the cities for work. This is how the massive, infamous slums of India, Latin America, and other developing countries were created.
Many other farmers committed suicide, having lost everything they had, including the very means to feed themselves and their families. And once those farmers sold or abandoned their land, guess who bought it all up? That’s right. Agribusiness.
Hybrid seeds were the seminal foundation of corporate-controlled, industrial, petrochemical-dependent monocultures.
By the 1990s an estimated 95% of all farmers in the First World and 40% of all farmers in the Third World were using Green Revolution hybrid seeds, with the greatest use found in Asia, followed by Mexico and Latin America.
The world lost an estimated 75 percent of its food biodiversity, and control over seeds shifted from farming communities to a handful of multinational corporations.
What are Genetically Engineered Seeds?
Hybrid Seeds Vs GMOs
In both open-pollinated and hybrid seeds, we have always been breeding crops that were genetically able to breed, like two types of stone fruit, or two varieties of squash, or two breeds of dog. But, unlike open pollinated seed selection or hybridization, GMO technology allows us to “play God” in a way that even Mother Nature hasn’t dared.
Today, with sophisticated and very expensive lab techniques (like retroviruses and gene guns), we can now manipulate and combine the DNA of species that could never, ever breed in nature—like fish and tomatoes, Brazil nuts and soybeans, or bacteria and corn. We can even genetically engineer cows to produce human breast milk!
GMO corn developed by Monsanto, for example, includes genetic material from the bacterium Bt (Bacillus thuringiensis), which kills European corn borers by punching holes in its gut lining. This means that every single cell of the GMO corn plant contains the DNA of a bacteria that damages the digestive tract of whatever eats it.
Combining or splicing together genes from different organisms in the lab (without actually sexually breeding them) is known as recombinant DNA technology, and the resulting organism is said to be “genetically modified,” “genetically engineered,” or “transgenic.”
Genetically modified organisms are truly Franken-foods, and have no precedent in nature. Some people believe GMOs are Abominations.
Whatever you believe, don’t believe for one second that GM crops are anything like other forms of seed breeding. Only GMO crops cross the species barrier, making them the biggest ecological experiment ever conducted on the planet.
A Brief History of GMOs
Between 1997 and 1999, genetically-modified (GM) ingredients suddenly appeared in about two-thirds of all U.S. processed foods. This change to our food supply was fueled by a single Supreme Court ruling. It allowed, for the first time, the patenting of life forms for commercial profit. Since then, thousands of applications for experimental GM organisms have been filed with the U.S. Patent Office alone, and many more abroad.
The first commercially grown genetically modified whole food crop was the Flavr Savr tomato, which was made more resistant to rotting by Californian company Calgene (later bought by Monsanto). The tomatoes were released into the market in 1994 without any special labeling.
Later GM crops included insect resistant Bt cotton and herbicide-tolerant Roundup Ready soybeans, both of which were commercially available in 1996.
Between 1995 and 2005, the total surface area of land cultivated with GMOs had increased by a factor of 50, from 17,000 km² (4.2 million acres) to 900,000 km² (222 million acres), of which 55 percent were planted in Brazil, mostly on land that had been tropical rainforest.
By 2006, 89% of all U.S. soybeans, 83% of cotton, and 61% of corn were genetically modified varieties. Today in 2013, U.S. farmers can barely even find non-GMO corn, soy or cotton seed anymore, unless they buy certified organic seed.
For crops like corn, canola and alfalfa, wind can easily carry the pollen from GMO varieties quite far to contaminate non-GMO and even organically grown varieties on neighboring farms. And there is no mandatory labeling of GM content in seed.
Related: (See How to Keep Monsanto Out of Your Garden for more information on how to find truly non-GMO seeds for your garden)
Why GMOs Are Unsustainable
Like open pollinated seeds, many GM seed varieties can be saved and expected to produce uniform offspring the following season. But GM seed cannot be saved because all GMO seeds are patented. It is actually illegal to save GMO seed.
You see, GMOs are so expensive to produce (thousands of times more expensive than hybrids or other publicly bred seeds), without patents, biotech companies couldn’t make their money back, much less hold the world hostage to their product monopoly.
Biotech companies are so rabid about protecting their patents that many U.S. farmers have been sued by Monsanto when GMO crops were found illegally planted on their fields. Unfortunately, most of these farmers did not intentionally plant the patented seed; rather, the GMO pollen drifted onto their property via wind or insects, and contaminated their non-GMO crops. This didn’t stop Monsanto from winning their cases against them though, and shutting those farmers down.
Subsistence farmers in developing countries, just like during the Green Revolution, are even worse off—now more dependent than ever on having to purchase seeds year after year—and the chemicals that go with them. That is, if the effort hasn’t already impoverished them off their land in the process.
Lastly, and perhaps most gravely of all, because of pollen drift and genetic contamination, we are starting to permanently lose food biodiversity. Control over seeds and the very ability to produce food at all continues to concentrate even further into the hands of just a few multinational corporations.
Notice a theme here?
Every time big chemical companies get involved in agriculture, none of their efforts are to grow food in a healthy, natural or sustainable way. Everything they create is meant to destroy regional food systems and local self-reliance, and foster dependence on expensive technologies, purchased seeds and more use of chemicals and drugs.
With GM techniques, we can grow rice that contains pharmaceutical drugs in every cell of the plant, we can grow soy and corn that can survive gallons of toxic chemicals dumped on it, and we can force cows to produce twice as much milk as they were ever meant to, requiring widespread use of antibiotics to deal with udder infections.
Sadly, as if we learned nothing from history at all, Bill Gates wants to export patented GMO seeds to Africa as the next big Green Revolution—this time to supposedly lift African subsistence farmers out of poverty. And all of this we call “Progress”!?! Progress for multinational corporations, maybe…
Related: (See Can Organic Farming Feed the World? to learn why GMOs will actually prevent us from feeding the world.)
We Are All Guinea Pigs for GMOs
So far, mostly commodity crops with GM traits—such as Canola, corn, soy, cotton, alfalfa and sugar beets—have been approved by the USDA for use, primarily in processed foods and animal feeds. The exceptions are rBGH-treated milk, and GMO papaya, zucchini, yellow crookneck squash, and sweet corn, which are available—without labels—at your grocery store.
It is estimated that over 85% of all the food on supermarket shelves contains GMO ingredients.
The trouble is that nobody knows how these unnatural, new organisms will behave over the long run. The seed companies that develop these varieties claim intellectual property rights so that only they can create and sell the variety. In most cases, biotech companies like Monsanto even refuse to allow scientists to obtain and study their GM seeds. And the USDA doesn’t test them either before approval; they rely solely on the self-testing done by the biotech companies themselves.
Nevertheless, many independent scientists worldwide are studying GMO crops, and the mounting evidence against GMOs is looking very grim.
From the development of allergies, tumors and reproductive disorders in lab animals, livestock and possibly humans, to the destruction of beneficial soil organisms and good soil structure that make it possible to grow food, to the creation of Superweeds and Superpests, GMO crops are looking far worse for people and planet than we ever imagined.
So, if anyone ever tries to convince you that hybrid seeds and GMOs are the same thing, or that genetic modification technology is “just another” form of seed breeding, you will know the truth: Hybrids are created through guided natural reproduction, while GMOs are the product of unnatural, high-tech methods used to create untested organisms that would never occur in nature.
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{ 28 comments… read them below or add one }
Thank you. This is the most thorough explanation I’ve read about GMOs. Maybe I missed it when I read it, but I’m confused about canola.
Some things I read say it is hybrid and some say it is GMO.
I am trying to rid my cupboards/meals of GMO, but I notice that tons of things in Whole Foods and Trader Joe’s are made with canola oil.
I thought I read that canola is a name made up for a GMO product made from rapeseed. Is it safe if it’s organic?
I really would appreciate your wisdom on this.
Thanks.
Canola is both a hybrid and a GMO. First it was hybridized to be edible to humans. Later it was made into a Round-Up Ready GMO crop. This means you can find organic Canola oil that is non-GMO. However Canola oil is bad for you whether it is organic or GMO, because it is a highly processed product that is high in inflammatory PUFAs, often rancid, and has been found to deplete Vitamin E in the body.
Thanks so much. I appreciate your information and checked out the canola article you linked. I used your search tool and typed in “canola” before asking my question, but it said there were no entries. Actually, I’ve searched several other things as well without success. Do you have an archive? Thanks.
This is well thought out and written clearly, but I would like to see your sources. Ingesting a modified food does not necessarily mean that the food will modify anything in our bodies in a negative way. It is important that people understand that allowing for two species of crop to interbreed so we can select for a certain trait is no different than putting the genes responsible for that trait into the plants ourselves in a lab. Also, using your example, fish and tomatoes are both safe to eat. Crossing the two (rather, taking a small part of DNA from one and putting it into another) will not result in an unsafe food by itself. The processes involved to do the cross may be unsafe, or maybe the chemicals needed to treat the resultant crop will be unsafe, but the act of the genetic modification ITSELF is not necessarily unsafe. It is healthy to have a distrust of major corporations (especially Monsanto, which is evil), but academic scientists (i.e. ones who are not profiting from their findings) are generally on our side. They have done extensive research that has been published in peer reviewed journals, and have not found CONCLUSIVE evidence to suggest the actual GMO’s are harmful.
***** I understand that you are addressing the more important issue, which is that the PRACTICE of developing and using GMO’s are harmful to third world farmers (unfair and dishonest prices, etc), the environment (harsh pesticides, antibiotics needed), and the economy (allowing big corporations to monopolize seed production). I agree wholeheartedly with you in those areas. I just felt the need to stand up for genetic engineering and point out that the simple act of putting DNA from one thing into another isn’t inherently bad.
It has given us treatments for cancer, diabetes, and infertility, just to name a few.
“Response to issues on GM agriculture in Africa: Are transgenic crops safe?”
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3198699/
“Genetically modified plants for food use and human health—an update”
http://royalsociety.org/uploadedFiles/Royal_Society_Content/policy/publications/2002/9960.pdf
“[Genetically modified food--unnecessary controversy?]”
http://www.ncbi.nlm.nih.gov/pubmed/23243917
I have written extensively on GMOs here, here, here, and here. You will find ample sources in all the articles.
Given how many studies have pointed to harm or the potential for harm from many GMOs, either to humans, pollinating insects, soil biota or ecosystems, the precautionary principle should apply. The fact that biotech companies won’t even allow long term INDEPENDENT studies rings alarm bells for everyone, which is part of why so many countries are restricting or banning these crops.
GM insulin (for example) is very different than a GM crop. GM crops are set upon the wild where they can cross pollinate with wild species (creating superweeds) as well as contaminate non-GMO seedstock, destroying biodiversity. And almost all GM crops to date require heavy application of glyphosate, which is a known human toxin, as well as a destroyer of soil tilth and soil biota. Glyphosate is also largely responsible for GM crops being significantly lower in nutrition than their conventional counterparts. (Glyphosate kills by chelating minerals, making them unavailable to weeds and other organisms that need them.)
GM crops are also created using viruses and bacteria that “infect” the host cell, allowing foreign DNA to enter it. These viruses and bacteria have been shown to jump the species barrier, and can be found in the gut bacteria of animals and humans alike, possibly contributing to the epidemic of gut dysbiosis, food allergies and malnutrition.
GM crops that contain BT are contributing to superpests, as well as having a devastating effect on beneficial insect populations. Ingesting BT in GMO crops has also been implicated in gut dysbiosis. And given that GM crops have lower yield and lower nutrition than conventional, all around, GM crops have been a big expensive debacle so far with as yet untold consequences. Not an experiment I want to gamble on, especially when there are so many better options.
This is really good info on GMO’s! Everyone concerned about the poisones food we are eating NEED to read this. Thanks, Dawn
Thank you for this! It’s well written, easy to understand. I have no problem absorbing this knowledge for myself, explaining it is another matter. Shared on Twitter, and emailed a link to my mother-in-law. I am an organic herbalist and I struggle at effectively communicating this to my clients, many of whom are hearing about GMOs for the first time. Do you mind if I link to this page from my website?
Not at all, as long as you don’t excerpt more than a paragraph or so. I’m glad to help spread good information and dispel myths about GMOs.
WOW!! I wonder if there is any link between GMOs and cancer!?! It wouldn’t surprise me if it is very direct. Dawn, thank you for an article that was very thorough and enjoyable to read!
Thank you for this insightful information!
Very good post for those who want to know! (I do!) Sharing it on FB for my friends to see what I am always yelling about!! Thanks for sharing this with us at Eco-Kids Tuesday! Hope to see you again today! http://likemamalikedaughter.blogspot.com/2013/02/bunnys-bento-box-eco-kids-tuesday.html
Great article. I’ve pinned it to my gardening board.
Very one sided……
http://www.seedbuzz.com/knowledge-center/article/evolution-of-hybrid-seeds-in-india
If you mean on the side of environmental sustainability, small farmers and poor people everywhere, then indeed, I admit, I am very one sided.
Thanks for all the info!
Wow, what an awesome post! This was so informative- thank you for sharing at Simply Natural Saturdays!
I’m featuring your post on The HomeAcre Hop! Thanks for sharing!
http://www.theselfsufficienthomeacre.com/2013/02/the-homeacre-hop-7.html
Until now my knowledge on the subject has lacked sufficient clarity. After reading this illuminating post I’m now aware of just what ‘s at stake. Thank you Dawn, thank you!
Rebecca, thanks for letting me know I did my job well! That thrills me to no end!
Thanks for sharing this on Wildcrafting Wednesday! Hope to see you back on today’s hop!
http://www.theselfsufficienthomeacre.com/2013/02/wildcrafting-wednesday-9.html
Things definitely get messed up when people try to play God. I wish people wouldn’t have messed things up so much for everyone in such areas as those you listed…
Thanks for sharing this information at A Humble Bumble!
A very thorough explanation! Love it! Thanks so much for sharing on The HomeAcre Hop! Hope to see you next time at:
http://www.theselfsufficienthomeacre.com/2013/02/the-homeacre-hop-7.html
This was wonderfully written! I think a lot of people don’t understand the differences between seeds, and don’t realize how harmful GMO seeds actually are. Thank you for sharing this! I will definitely be pinning it!
Well said!
thank you for sharing with us at the wednesday fresh foods link up! i hope to see you again this week with more seasonal & real/whole food posts! xo, kristy.
Thank you SO much for this! I started working at a dairy about a year ago. I’ve had a couple conversations with my boss about GMO corn and what-not and he’s always told me that it was just like they’ve been doing for years! I knew that wasn’t true but I didn’t know the differences enough to tell him what they were. Thank you again, now I can tell him the differences!
Thank you so much. I have been trying to understand all this for quite sometime but needless to say, it can get a bit convoluted out there. This was so concise, clear, and well-written, that I finally get it now! I will be sharing this.
I’m so glad! Thanks for sharing!
I was so glad to see this post on your green resource this morning because I’ve been wanting a concise article to direct others to that explains OP, Hybrid, & GMO seeds in a brief understand able way. And that covers the dangers of GMO seeds and foods. Thanks so much, I will definitely be sharing!