What is a fern and how to raise it?

Pteridophyte is a relatively primitive group of higher plants, and it is also the earliest terrestrial plant. This plant is an herb growing in the mountains, with tenacious and exuberant vitality, all over the temperate and tropical zones of the world.

What are ferns? ferns are woody plants that grow in lowlands. They need water as part of the regeneration cycle, and begin to derive a variety of different species, which is still a very strong plant today. Ferns have a life cycle of alternating generations, which is cycled by two sets of gametophytes and a single set of gametophytes. The typical life cycle of pteridophytes is to produce a single set of spores from the sporophyte through meiosis; the spores divide through cells to form gametophytes; gametes produce germ cells through mitosis; mobile, flagellate sperm fertilize eggs that still adhere to the prothallus; fertilized eggs form a double set of fertilized eggs and grow into sporophytes by mitosis. How to raise pteridophytes there are different suitable planting areas for different ferns, and the adaptability of varieties selected from different regions is different. For example, the pH of the soil is very important for the growth of ferns, most ferns need an acidic growth environment, if ignored, it will affect its growth. For example, Osmunda Osmunda is suitable for growing in slightly acidic soil, so it is easy to grow in the south. However, due to the alkalinity of the water in the north, if you want to grow well, you need to treat the water, otherwise it will be longer and worse. Ramet propagation refers to pouring the plant out of the basin and dividing one plant into several plants as needed, each with roots and leaves. Be careful when dividing plants, do not damage the growing point, and keep the roots as much soil as possible. Cut off aging and damaged leaves and roots. Replant ramets and water them according to the original soil level. Ramet propagation has no strict seasonal requirements, and can be carried out all the year round if necessary. Tissue culture can be used for tissue culture of pteridophyte liquid, and tissue culture can be used for in vitro rapid propagation of species that produce little or no spores and are difficult to reproduce with spores, or for valuable species. In order to carry out large-scale modern commodity production, tissue culture is also needed. Ferns are in different growth periods and have different requirements for light. In general, the initial stage of growth, that is, the budding stage, to prevent excessive light, more shade. The dormant period should be placed in a place with plenty of light. Most ferns like filtered, indirect or reflected light. If there is not enough light, the plant will grow too long and appear weak or wilting. What is a fern and how to raise it?

Pteridophyte is a relatively primitive group of higher plants, and it is also the earliest terrestrial plant. This plant is an herb growing in the mountains, with tenacious and exuberant vitality, all over the temperate and tropical zones of the world.

What are ferns? ferns are woody plants that grow in lowlands. They need water as part of the regeneration cycle, and begin to derive a variety of different species, which is still a very strong plant today. Ferns have a life cycle of alternating generations, which is cycled by two sets of gametophytes and a single set of gametophytes. The typical life cycle of pteridophytes is to produce a single set of spores from the sporophyte through meiosis; the spores divide through cells to form gametophytes; gametes produce germ cells through mitosis; mobile, flagellate sperm fertilize eggs that still adhere to the prothallus; fertilized eggs form a double set of fertilized eggs and grow into sporophytes by mitosis. How to raise pteridophytes there are different suitable planting areas for different ferns, and the adaptability of varieties selected from different regions is different. For example, the pH of the soil is very important for the growth of ferns, most ferns need an acidic growth environment, if ignored, it will affect its growth. For example, Osmunda Osmunda is suitable for growing in slightly acidic soil, so it is easy to grow in the south. However, due to the alkalinity of the water in the north, if you want to grow well, you need to treat the water, otherwise it will be longer and worse. Ramet propagation refers to pouring the plant out of the basin and dividing one plant into several plants as needed, each with roots and leaves. Be careful when dividing plants, do not damage the growing point, and keep the roots as much soil as possible. Cut off aging and damaged leaves and roots. Replant ramets and water them according to the original soil level. Ramet propagation has no strict seasonal requirements, and can be carried out all the year round if necessary. Tissue culture can be used for tissue culture of pteridophyte liquid, and tissue culture can be used for in vitro rapid propagation of species that produce little or no spores and are difficult to reproduce with spores, or for valuable species. In order to carry out large-scale modern commodity production, tissue culture is also needed. Ferns are in different growth periods and have different requirements for light. In general, the initial stage of growth, that is, the budding stage, to prevent excessive light, more shade. The dormant period should be placed in a place with plenty of light. Most ferns like filtered, indirect or reflected light. If there is not enough light, the plant will grow too long and appear weak or wilting. More information "| role of green roses | culture method of cactus | Snow bonsai in June | language of bell orchids | fengshui plants in office | | how to raise gardenias | cultivation methods of crab claw orchids | language of carnations | function of lavender | cultivation methods of camellias | | cultivation of carnations | cultivation methods of magnolia | picture of canna; picture of potted flowers | planting method of bowl lotus |

What is a fern? Characteristic pictures and brief introduction of pteridophytes

Ferns (ferns) have more real leaves than the more primitive Shisongmen, but less seeds than the more evolved seed plants (gymnosperms and angiosperms).

Pteridophyte is the main class of plants, is a relatively lower phylum of higher plants, but also the most primitive vascular plants. Most of them are herbaceous and a few are woody. The sporophyte of pteridophytes is well developed, which can be divided into roots, stems and leaves, without flowers, propagating by spores, alternating generations, and asexual generations are dominant. It can be divided into five classes: water leek, pine leaf fern, stone pine, Equisetum and true fern, mostly distributed in the provinces south of the Yangtze River.

Like all vascular plants, pteridophytes have an alternating life cycle of two sets of sporophytes and one set of gametophytes. Unlike gymnosperms and angiosperms, gametophytes are free organs. The typical life cycle of ferns is as follows:

1. Sporophyte (double sets) produces a single set of spores by meiosis.

2. Spores divide through cells to form gametophytes, which usually contain photosynthetic prothalli.

3. Gametes produce germ cells through mitosis (usually sperm and eggs are not from the same prothallus, because the sperm organ and egg organ of the same prothallus have different maturation times).

4. Moveable, flagellated sperm fertilizes the egg that still sticks to the prothallus.

5. The fertilized egg forms a double set of fertilized eggs and grows into sporophyte through mitosis (commonly seen as ferns).

6. But the sporophyte of pteridophyte is much more developed than gametophyte, and it has differentiation of root, stem and leaf and transport system composed of primitive vascular tissue, which is different from bryophyte. Ferns produce spores but not seeds, which are different from seed plants. The sporophyte and gametophyte of pteridophytes can live independently, which is different from bryophytes and seed plants. In a word, pteridophytes are a large group between bryophytes and seed plants.