"Scientific Power" lazy gospel!Is seedless fruits really safe?

Recently, high temperatures in many places have continued, and the highest temperature in some areas has even reached 40 ° C. It lasted for a month of high temperature and affected more than 900 million people. In summer, many people will choose to eat fruits to cool down the heat, especially many families like to buy seedless fruits, such as seedless watermelon and seedless grapes. However, many people also question the safety and health of seedless fruits -Will eating seedless fruits have an unhealthy impact on the body?

What is the truth? How does seedless fruits come from, and is it safe to eat them?

In fact, the principle of seedless fruits comes from the development of plant seeds. Fruit is the fruit of plants. Its sacred mission is to protect the seeds inside, and at the same time use a sweet atmosphere to attract animals and spread the seeds of plants. But if we can adopt some methods to prevent the development of plant seeds from developing without affecting the development of the outer wall of the child room, it will get seedless fruits.

The first method is to apply a certain concentration of plant hormone for the fruit to inhibit seed development and promote fruit development. Among them, seedless grapes are one of the representatives. Many seedless grape varieties on the market are hormone treatment of a certain concentration of nutrition during the grapes and tender ears. The grapes treated with hormones can not only achieve a higher nuclear rate, but also the effect of increasing fruit size.

The second method is to make the seeds unable to develop normally through hybrids. At the same time, it can be stimulated, so that the fruit itself can produce the plant hormone that is sufficient to develop. This is the cultivation method of seedless watermelon. Ordinary watermelon is a double -body plant, that is, the cells contain two groups of chromosomes, which can normally condense. People use autumn water fairy to deal with watermelon, so that their chromosomes are doubled into four times. However, when the four -fold watermelon and double body watermelon are hybridized, the duplex watermelon is generated, and its embryo sac will be confused when the egg cells are produced, so it cannot be fertilized normally into normal seeds. At this time, the pollination of twice the pollen of double body watermelon, the enzyme system contained in the pollen is brought into the watermelon fruit by the pollen tube, so that the three -twice watermelon fruit can synthesize the growthin. As a result, the duplex watermelon Fruits become seedless fruits.

In addition, there is a third method that is a mutant -free fruit by looking for the seed infertility produced by the plant itself but can produce vegetable hormones itself to produce seedless fruits. This is the cultivation method of seedless citrus. Some citrus branches have mutated due to external stimuli when germination, so that the seeds cannot develop, but the fruit itself develops normally. These branches can produce seedless citrus through cuttings and grafting.

Seed -free watermelon and seedless orange

Experts do not have to worry about the health and safety of seedless fruits. In general, seedless fruits are not much different from normal fruits. Although some seedless fruits use plant hormones during the growth process, they can be eaten with confidence. Because the vegetable hormones used in seedless fruits are quite different from the chemical properties, and the metabolic mechanisms are different. Various types of plant hormones used in agricultural production will not have the effect of animal hormones after being intrame.

Author: Mai Wanhua

Edit: Zhao Dina

Review: Gong Zimo

Vision: Long Hao

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