Why do plants not bloom until a certain season?

Spring orchid, summer lotus, autumn chrysanthemum, winter plum, plants bloom in a certain season.

Flowering is a very important part of a plant's life, indicating that it has entered the reproductive stage. However, plants have their own critical temperature index and critical accumulated temperature index when flowering, such as the general woody plant, the critical temperature index is 6 10. That is, when both meet the requirements, even hibernating plants will wake up and respond ——— sprout and spread their leaves, blossom and bear fruit.

In addition, various plants have different requirements for sunshine when flowering, and some need to exceed a certain sunshine limit to bloom, which is called "long-day plants"; Some of them bloom only when they are shorter than a certain amount of sunlight, and they are called "short-day plants". In nature, short-day plants tend to bloom in early spring or autumn, while long-day plants tend to bloom in late spring or early summer, because the former has short days and long nights, while the latter has long days and short nights. However, some plants do not have strict requirements for the length of sunlight, and can flower and bear fruit normally as long as the conditions are suitable, and these plants are called "medium sunshine plants".

After we grasp the law of flowering of plants, we can change their flowering season as long as we change their growth environment, or warm, or illuminate, or shade.

Plants have their own growth rules and temperatures, if the season is not suitable, then the sunlight and temperature are not in place (if it is not good in summer, too much sunlight, it will be sunburned) then it will be like people, malnutrition and death.

At different times, at different times, at different temperatures, the flowers will have different sensations and different fragrances.

Before flowering, the plant must go through a series of internal growth and development to produce the flowers we see, and this growth and development must go through certain environmental conditions to occur, so flowering must wait until a certain season, and the control of flowering time is not to change its growth environment, and there is the control of genes.

It is controlled by the phenological period, and the determinants are the number of light hours and accumulated temperature.

Different plants bloom for different reasons:

1. In one day, the light, temperature, humidity and air pressure are different, in order to adapt to the changes in the environment, different plants choose different times to bloom according to their own characteristics.

2. Due to the different activity times of insects and birds, the opening time of different kinds of flowers is also different, so as to achieve the purpose of adapting to each other.

3. Because different plants need different environments to bloom, and the environment in a day is constantly changing, so plants choose different times to bloom, which is the result of choosing the environment.

Ecological relationships: many animals and plants co-evolve, for example: many animals will help pollinate flowers in exchange for their nectar; Many animals help plants disperse their seeds when they eat the fruit and excrete the seeds.

Adaptive plants are plants that co-evolve with ants, providing shelter and sometimes food for ants. In exchange, ants help the plant defend against herbivorous properties.

animals, and sometimes help them compete with other plants.

Ant waste can also be supplied to plants as organic fertilizer. The root system of most plants has a mutually beneficial symbiotic relationship with different fungi, which is called mycorrhizae.

Among the common plants, most of them bloom during the day. This is because in the early morning, the upper epidermal cells (inside the petals) grow faster in the sunlight and early in the morning, so the petals bend outward and the flowers bloom. The flowers bloom during the day, and when exposed to sunlight, the aromatic oil in the petals is easy to volatilize, and the colorful flower colors can attract many insects to come to collect nectar.

When insects collect nectar, they act as the "matchmaker" of flowers, imparting pollen to flowers and reproducing offspring. So, why do some flowers prefer to bloom at night, and most of the flowers are white? Plants bloom to attract insects to pollen.

Plants that bloom at night are also initially colorful in a variety of colors, but white flowers are most reflective at night.

Different plants bloom in different seasons, which is the result of long-term natural selection. Different plants have different flower buds at different times of differentiation and need to go through different growth stages before they can flower and bear fruit. In general, most perennials bloom in spring (peach, plum, apricot, begonia), most of the perennial plants bloom in summer (cabbage, radish), most of the annual plants bloom in summer (soybean, corn, rice), a small number of plants bloom in autumn (chrysanthemum, buckwheat), and in South China, a small number of plants bloom in winter (plum, loquat tree).

The reasons why the flowering season of plants are different are:

1. The origin of flowers is different, the light, temperature, humidity and air pressure are different, in order to adapt to the changes in the environment, different plants choose different seasons to bloom according to their own characteristics;

2. Plants in different regions in the long-term evolution process, adapted to local conditions, have different responses to light and temperature, such as plants are short-day, it can only bloom under short-day conditions, if only grown in long-day conditions, it only carries out vegetative growth, and does not transform into reproductive growth, for example, some plants are sensitive to temperature, only after a certain low temperature stage, can flower, sensitive response to light and temperature, that is, reflects the different flowering seasons of plants, such as short-day plants bloom in winter, long-day plants bloom in summer.

Hops bloom around 3 a.m., morning glory blooms at about 4 a.m., wild roses bloom around 5 a.m., sunflower blooms around 6 a.m., dandelions bloom around 7 a.m., and sunflowers bloom at 12 noon. At about 3 p.m., the marigold blossoms bloomed, and at about 5 p.m., purple jasmine sent wisps of fragrance. Why do different plants bloom at different times?

It turns out that the flowering time of plants is closely related to temperature, humidity, and light. For example, the petals of epiphyllum are large and delicate, and if they bloom during the day, they are in danger of being burned. The temperature is too low late at night, and it is not suitable for flowering.

For a long time, it has adapted to the temperature and humidity around 9 p.m., and when it is then it quietly blooms with elegant buds and shows people a beautiful smile. There are also flowers that need to be pollinated by insects to produce seeds, and their flowering time often coincides with the time of insect activity. A botanist once deliberately planted flowers that bloomed at different times together, and built the flower beds like clock faces to form the "clock" of flowers.

The flowers bloom within twenty-four hours. Hops bloom around 3 a.m., morning glory blooms at about 4 a.m., wild roses bloom around 5 a.m., sunflower blooms around 6 a.m., dandelions bloom around 7 a.m., and sunflowers bloom at 12 noon. At about 3 p.m., the marigold blossoms bloomed, and at about 5 p.m., purple jasmine sent wisps of fragrance.

Why do different plants bloom at different times? It turns out that the flowering time of plants is closely related to temperature, humidity, and light. For example, the petals of epiphyllum are large and delicate, and if they bloom during the day, they are in danger of being burned.

The temperature is too low late at night, and it is not suitable for flowering. For a long time, it has adapted to the temperature and humidity around 9 p.m., and when it is then it quietly blooms with elegant buds and shows people a beautiful smile. There are also flowers that need to be pollinated by insects to produce seeds, and their flowering time often coincides with the time of insect activity.

Maybe someone doesn't know how to make the flowers, okay! Let me tell you: a botanist once deliberately planted flowers that bloomed at different times together, and built the flower beds like clock faces to form the "clock" of flowers, and they opened at the same time as the source hail bridge, which formed the time when the flowers bloomed.

1. In the long-term evolution process of different regions, plants have adapted to local conditions and have different responses to light and temperature.

2. If there is a plant that is short-day cherry blossom, it can only bloom under short-day conditions, and if it only grows under long-day conditions, it will only carry out vegetative growth, and not transform into reproductive growth. Another example is that some plants are sensitive to temperature and can only bloom after a certain low temperature stage.

3. The sensitive response to light and temperature is reflected in the different flowering seasons, such as short-day plants blooming in winter and long-day plants blooming in summer.

It is because the flowering time of plants is closely related to temperature, humidity, and light. One.

Flower blooming is affected by a combination of the length of time spent in light and the ambient temperature.