Elizabeth Barrette (ysabetwordsmith) wrote,
Elizabeth Barrette
ysabetwordsmith

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GE High-Yield Corn Goes Seedless

Monsanto, a source of many and varied concerns, has added a new one: some of their genetically engineered seed corn, manipulated for high yields and pesticide resistance, sprouted but failed to produce seeds on the cobs. While I'm not in favor of a total ban on genetic engineering, I think it should be handled with much greater care and that dangerous companies like Monsanto should be reined in before they do irreversible harm.

Monsanto GM-corn harvest fails massively in South Africa
South African farmers suffered millions of dollars in lost income when 82,000 hectares of genetically-manipulated corn (maize) failed to produce hardly any seeds.The plants look lush and healthy from the outside. Monsanto has offered compensation.
Monsanto blames the failure of the three varieties of corn planted on these farms, in three South African provinces,on alleged 'underfertilisation processes in the laboratory". Some 280 of the 1,000 farmers who planted the three varieties of Monsanto corn this year, have reported extensive seedless corn problems. 

Urgent investigation demanded 
However environmental activitist Marian Mayet, director of the Africa-centre for biosecurity in Johannesburg, demands an urgent government investigation and an immediate ban on all GM-foods, blaming the crop failure on Monsanto's genetically-manipulated technology. 
Tags: food, safety
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I remember editing an article on GM crops, when Monsanto was touting it as a way to reduce pesticide dependence, which is ironic since one of the main GM modifications is to make crops able to withstand stronger doses of poisonous pesticides--like modifying a human body to make it better able to resist chemotherapy.

I do favor a total ban on GM crops, myself.
*Blinks* But corn without seeds is... well, is nothing, really. Corn kernels ARE seeds. *Scratches head at this one*
It sounded weird to me too. Apparently, the seed corn sprouted and produced corn plants; the plants produced ears that even looked normal from the outside; but when the shucks were opened, the cobs inside had few or no seeds. It seems related to a far more common problem, that unhealthy corn plants tend to produce stunted ears that have kernels only on part of the cob and a withered end above that.
Ah, I see.

Cuz yeah, purposefully seedless corn would be like a solar powered flashlight or dehydrated water.
I am not an expert (far from it), but Monsanto's explanation definitely seems odd. For one, corn seeds are not fertilized "in the lab". Corn plants are wind-pollinated and this occurs during the growing cycle. The only way something could have been "underfertilized in the lab" would be if the crop Monsanto grew to produce the seeds was underfertilized, in which case, why would that affect what seeds the crop DID produce? I am not sure.

Looking up the corn growth cycle (http://www.ag.ndsu.edu/pubs/plantsci/rowcrops/a1173/a1173w.htm), I think the problem could have been a few things. Corn is pollinated when the pollen from the top of the plant (tassel) hits the silk strands at the end of the ear. If the corn doesn't produce enough silks at the end of an ear, or if they somehow develop improperly, then they won't fertilized and the corn ears will have fewer or no kernels. If the corn tassels develop improperly, then they may not pollinate the silks and again, no kernels. The third thing that could have happened would be if the tassels did not start pollinating the ears at the proper time, when the silk was ready to be fertilized. In other words, everything worked properly, but the timing was off. If the problem was due to genetic modification, then this is my personal bet as to what happened since the story said that everything looked healthy until the corn ears were actually shucked. For example, when corn is immature, it produces a natural pesticide called DIMBOA, but the production of this pesticide falls dramatically when the plant reaches maturity (http://en.wikipedia.org/wiki/Maize). Maybe Monsanto decided to alter the corn growth cycle so that the corn would produce the pesticide throughout the life-cycle of the plant, and accidentally caused the corn fertilization process to fall out of sync when they did so (complete shot-in-the-dark theory, feel free to demolish at will).

However, before people jump to conclusions, we should wait to make sure that Monsanto truly did cause the problem. Though the article certainly gives compelling evidence against Monsanto, and I'm willing to bet Monsanto bears at least partial blame, there are also several environmental factors that can affect kernel production. The article admits that only a quarter of the farmers that planted Monsanto crops (280/1000) suffered extensive crop failures. If those failures were concentrated around one region which contained mostly Monsanto corn and that suffered a dry period around the time that the corn was silking, for example, then the problem might not have anything to do with Monsanto at all. Or maybe it WAS partially the Monsanto modifications that caused the problem, but environmental factors also contributed to the problem. For example, the Monsanto modifications might have made the corn more resistant to insects, but also more susceptible to drought, which could have exacerbated a problem that would have occured anyway, but would not have been as severe if Monsanto corn had not been planted. Information should be collected on which farmers suffered the problem, where they live, the weather and soil conditions that year, the possible causes of the plant failure, which plants failed, were there any non-Monsanto plants which behaved similarly to the ones cited in this article, what modifications were made to the Monsanto varieties under question, and how those varieties might have affected the plant growth cycle.
>>For one, corn seeds are not fertilized "in the lab". Corn plants are wind-pollinated and this occurs during the growing cycle. The only way something could have been "underfertilized in the lab" would be if the crop Monsanto grew to produce the seeds was underfertilized, in which case, why would that affect what seeds the crop DID produce? I am not sure.<<

Yes, I thought that sounded odd too. The only thing I can think of is that underfertilization might have somehow damaged the seeds in a way that plants sprouting from them would be unable to reproduce properly. But poor nutrient supply a) doesn't usually cause that kind of damage, and b) usually does cause other obvious signs such as off color, stunted growth, misshapen leaves/stems, etc.

>> I think the problem could have been a few things. Corn is pollinated when the pollen from the top of the plant (tassel) hits the silk strands at the end of the ear. If the corn doesn't produce enough silks at the end of an ear, or if they somehow develop improperly, then they won't fertilized and the corn ears will have fewer or no kernels.<<

A couple other possibilities: 1) Corn is wind-pollinated; if there is not enough air movement, or if pouring rain washes all the pollen out of the air, that can prevent seed from setting. This happens -- but it doesn't tend to produce empty ears. It produces ears with 1/4, 1/2, or 3/4 the normal amount of kernels. That's bad enough, but probably not the same as "few or no kernels." 2) The problem with gengineering is that traits don't match genes on a one-to-one basis. Tinkering with one thing can change something else you didn't mean to change ... like, say, the stickiness of the silk strands. If they aren't sticky, the pollen won't adhere. Some types of genetic damage can cause the silk texture to develop wrong.

>> The third thing that could have happened would be if the tassels did not start pollinating the ears at the proper time, when the silk was ready to be fertilized. In other words, everything worked properly, but the timing was off. If the problem was due to genetic modification, then this is my personal bet as to what happened since the story said that everything looked healthy until the corn ears were actually shucked. <<

That's plausible, and checkable if anyone kept close enough records or has some of the seed corn left unsprouted.

>> However, before people jump to conclusions, we should wait to make sure that Monsanto truly did cause the problem. <<

Agreed.

>> For example, the Monsanto modifications might have made the corn more resistant to insects, but also more susceptible to drought, which could have exacerbated a problem that would have occured anyway, but would not have been as severe if Monsanto corn had not been planted. <<

This is a very widespread complaint against not just Monsanto but all the uber-agrocompanies. They move into an area where farmers have spent hundreds or thousands of years developing cultivars adapted to local conditions. Then the company pressures people to buy seeds, instead of saving them, and buy chemical fertilizers and pesticides and herbicides to protect them. But the company's seeds are designed to do just one or two things super well, under optimized conditions -- and when sold in the real world, performance often suffers.

Happily some people are realizing this. It used to be hard to find antique/heritage/open-pollinated cultivars. Then you could find some in specialty catalogs. Now even the commercial garden catalogs usually have a few, and some garden centers carry plants -- I saw some today. So there's progress, at least where it's harder for the ubercorps to harass, sue, or kill people for saving seeds.