Speaking of papaya, the first thing we think of is papaya. Papaya is a fruit of Cruciferae and Papaya. Originated in South America, it was introduced to China in17th century. Because China also has papaya, this fruit is called "papaya". Papaya is very different from papaya in Chinese mainland. Papaya in China belongs to shrubs or small trees of Rosa and Papaya, and its fruit is very different from what we often see.
In our traditional culture, papaya is often given as a certificate change or in other auspicious ways, such as throwing it with papaya and repaying it with Joan. But neither China native papaya nor papaya has rich efficacy. Take the papaya that we often eat as an example. The main components of papaya are not only cellulose and various sugars, but also papaya kernel and carotenoids.
The main function of papain is to break down macromolecules from protein and protein into small molecules, making meat softer and more tender. So they are often extracted as meat softeners. Can be used as cosmetic additive in cosmetics. And it is widely used in industry. But when we eat papaya, our esophagus does not absorb nutrients from papaya. After papaya reaches people's stomach, the stomach acid of human body is very strong, and most papaya will be decomposed by gastric juice. In other words, papain lost its activity and could not work normally.
Carotenoids can be converted into vitamin A in human body, which can promote growth, reproduction and maintain bones, but vitamin A has no rich function. In addition, carotene and vitamin A are common in other foods, and their contents are less than those of papaya, which shows that papaya can be rich, which is totally nonsense. However, papaya still has many advantages as a fruit, and eating it in large quantities has no effect on the body. So for whatever purpose, it is harmless to eat more papaya.
We know that most organisms adopt sexual reproduction, which requires the joint participation of both men and women. Many creatures have only two sexes in the same species, but the sex of papaya is gorgeous. Papaya and hermaphrodite trees have both males and females. The three trees "hermaphrodite, female and male" also bear five different flowers: hermaphrodite, whole rock, bisexual, bisexual, male, bisexual and female. Among them, bisexual flower is a kind of flower with acquired gender change, which refers to the state between male flower and female flower.
The reason why the sex of papaya is so strange is that it is not controlled by X and Y chromosomes like humans, but by X, Y and Yh. The reason why they can produce five different flowers is that when the external environment changes, their flowers will also change. Among them, when the temperature is 26-32, papaya tree will produce a large number of hermaphrodites. When the temperature is lower than 26℃, the flowers produced by papaya face females. When the temperature exceeds 32℃, the flowering of papaya tree faces the male.
Among them, the pollen of all male flowers can only produce offspring if it is fertilized with all female flowers. Bisexual flowers can pollinate themselves. But all females can bear fruit even without fertilization, but without seeds, the fruit is not delicious. The papaya we often eat is actually the fruit of bisexual flowers. The concept of rich papaya is very popular on the Internet, but research shows that papaya is not a rich function, but provides vitamins and nutrients needed by the human body like ordinary fruit.
Papaya is very common, but few people know that it has five personalities, but when farmers choose to plant papaya, they often choose a hermaphrodite tree. Most of the papaya we eat comes from hermaphroditic trees, so we can hardly observe papaya tree of different sexes. Papaya tree of most genders can blossom (it is difficult for all male trees to bear fruit), but the fruits of different genders have different tastes.