Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

Where did watermelons originate? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Comments on the article Comments on the article

Did you know?

Where did watermelons originate?

Almost everyone loves watermelons and melons. And when it comes to something known and widespread in our time, it is hard to believe that such a thing is known and gives people pleasure for many millennia! The homeland of these plants is Asia, where they are found even in the wild. It is quite possible that several thousand years ago watermelons and melons came from here to other countries.

Watermelon has been a delicacy since the ancient Egyptians. The ancient Romans, and perhaps the Greeks, got as much pleasure from watermelons as we do. The French began to grow watermelons in times closer to us. This happened about 300 years ago. Watermelons and melons belong to the same plant family as cucumbers and pumpkins. It is a climbing plant that grows best in warm, humus-rich loamy soils.

In colder climate zones, watermelons are grown in greenhouses or greenhouses. All watermelons and melons come from two main plants. Melons originally grew in South Asia, and watermelons in tropical Africa. But during the centuries that they were grown, they spread to many countries, and now there are a lot of them. Musk melons get their name from the aroma they give off. Musk melons are also called cantaloupes. Watermelons are much larger than melons and much juicier.

Author: Likum A.

 Random interesting fact from the Great Encyclopedia:

What is pollination?

Flowers are the reproductive organs of angiosperms (flowering) plants. In other words, the flower is meant to produce the pollen or seeds of that plant, or both. The most important parts of a flower are the pistils and stamens.

In many flowers (but not all) there is also a pistil (one or more) located in the center, and stamens surrounding it on all sides. In the thickening at the lower end of the pistil are small bodies called ovules, each of which, under favorable circumstances, is capable of developing into a seed. The most important part of the ovule is the tiny egg. The eggs are so small that they can only be seen under a microscope. Each stamen ends in a sac containing pollen. When the breeding season comes, these sacs open, and pollen, which has the form of a finely ground powder, usually yellow, enters the outside world.

For the seed to germinate, it is necessary that the dust particles somehow get on the pestle. The process of transferring pollen from stamens to pistils, regardless of how it is carried out, is called pollination. There are many different ways of pollination. The simplest is when the pollen itself is shaken off onto the pistil: this method is called self-pollination. However, wind or insects are more often involved in this process. Most herbaceous plants are pollinated by the wind (not only simple meadow grasses, but also wheat and other cereals).

The mechanism of this process is very simple. The wind shakes the plant, knocking pollen from the stamens, picks it up and spreads it throughout the field or meadow. Part of it settles on the pistils, in which the fertilization of eggs occurs, that is, the emergence of seeds. Pollination is often carried out by insects.

This usually occurs in those plants whose flowers have a bright color or strong aroma, which attract insects. They descend on the flowers in search of nectar, from which they make honey, and pollen, which serves as food for them. At the same time, part of the pollen sticks to their bodies and wings, and then, when a bee, butterfly or bumblebee flies to the next flower, they involuntarily shake it off onto the pistil of the last one.

 Test your knowledge! Did you know...

▪ How do we read?

▪ What language has a different vocabulary for men and women?

▪ Who is still alive thanks to the numerous bites of fire ants?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Self-healing glass 15.12.2017

A group of Japanese researchers created a special glass that has the ability to self-heal if its integrity is violated. During the development of a new type of adhesive type, a material was created that can be easily restored after a breakdown.

Researchers at the University of Tokyo, in the course of their experiments to create a special adhesive agent, managed to make a material that resembles ordinary glass in all characteristics. The main feature of the created novelty is that if the parts of the glass formed from its breaking are applied to each other along the junction where the split occurred, then they will rejoin each other.

Scientists argue that the former strength of this material in case of violation of its integrity can be easily restored by holding the broken parts in contact with each other for several hours.

The scientists called this invention "polythiourea", and according to their assurances, the new material can soon replace the usual fragile glass, which is thrown away immediately after losing its integrity.

Other interesting news:

▪ ASRock iBOX-V2000 Mini PC

▪ Bear self-treatment

▪ OLED panel 0,97 mm thick

▪ Magnet hammers steel

▪ LED strip for smart home Aqara LED Strip T1

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Fundamentals of safe life (OBZhD). Article selection

▪ article Aircraft model Firefly. Tips for a modeller

▪ article Why is the drum round? Detailed answer

▪ article Travel first-aid kit for a child. Health care

▪ article Combined radio receiver. Encyclopedia of radio electronics and electrical engineering

▪ article High temperature indicator on the KIA6966S chip. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024