Satisfied with seedless watermelon, eat watermelon in a big mouthful without spitting out seeds.
But some friends are also worried. Normally, watermelons have seeds. Is this seedless watermelon? Has it been treated with medicine? Or is it a genetically modified product?
The origin of the seedless watermelon
Actually, the seedless watermelon is obtained through scientific hybridization, which does no harm to the human body. You can imagine hybrid rice by analogy.
Do you remember what you learned in high school biology class? The ordinary seeded watermelon is a diploid plant. Through artificial induction methods, such as treating the seeds or seedlings of diploid watermelon with colchicine (a plant alkaloid), so that when the cells divide, the genetic material cannot be divided into two equal parts. One becomes one and empty, one of which has doubled hereditary material, and the other has no genetic material.
This doubled watermelon changed from a normal diploid watermelon to a quadruploid watermelon.
In fact, there are tetraploid watermelons in nature, which is the result of natural mutation.
Normal reproduction, diploid and diploid intermingled to obtain diploid, if you use tetraploid and diploid Ploidy crosses, and the result is triploid.
Unfortunately, this kind of triploid cannot produce normal germ cells and cannot continue to breed offspring, but it can be stimulated by the division of ordinary diploid melons. , And produce triploid fruits, and in such fruits, because of abnormal germ cells, they cannot develop into seeds and becomeThe so-called "seedless watermelon".
In fact, seedless watermelons are not all seedless, and currently cultivated seedless watermelons are not It's not that there are no seeds at all, but there are undeveloped small and white seed coats like gherkin seeds, which feel like seedless when eaten.
So, the seedless watermelon is the result of artificial breeding. There are no injections, no contraceptives, no harmful substances, and no genetically modified products.You can eat it without worry.
The biggest health hazard is eating too much, which affects blood sugar. Although the sugar content of watermelon is not high in fruits, it has a high glycemic index and has a considerable impact on blood sugar. Pay attention to it in summer Some will be fine.
[Neither medicine nor medicine] Introduction
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