How to grow yew, how to grow yew

Can yew trees be replanted? How?

Yew prefers acidic soil, and can be planted with loose, airy and well-drained sandy soil before the planting and breeding period. During the maintenance period, the ambient temperature and humidity should be controlled, and the plants should be given sufficient light, water and fertilizer, and the plants can be applied with a thin fertilizer solution between 20 and 30 days to avoid soil alkalinization.

Yew is a tree or shrub plant of the genus Taxus in the family Taxaceae, and the plant belongs to the rare tree species. Yew prefers acidic soils, and sandy soils that are loose, breathable and drain well are available for growing yews. The soil can also be mixed with peat soil (humus), river sand and pastoral soil, and the configured soil has a strong ability to retain fertilizer and water.

Yew is temperature-loving, and the plant has strong negative tolerance, which is a negative tree species. The plants are suitable for growing in warm or semi-shady climates, and the temperature suitable for plant growth is between 20 and 30 degrees. The plant is cold tolerant and can tolerate low temperatures of more than minus 30 degrees.

During the curing period, the ambient temperature and humidity should be controlled to ensure that the air is sufficiently moist.

Yew is more tolerant to negativity, but the plant needs to have plenty of light for it to grow during the growth period. During the summer, the plant needs to do a good job of shading to avoid sun exposure, which will cause a large amount of water in the plant to evaporate, which will affect the growth of the plant. If you are a potted plant, you can move the plant to a cool, ventilated location during the summer.

Yew needs the right amount of watering and fertilization during the growth period, and when watering, you can water the plant with ferrous sulfate solution once between 20 and 30 days, which is conducive to the growth of the plant and can also avoid soil alkalinization. During the growth period of yew, the fertilizer is mainly compound fertilizer, which can apply 1 thin fertilizer solution to the plant between 20 and 30 days.

Yew is a very beautiful potted plant, many families like to grow yew, so what is the planting method of yew, let me explain my opinion.

First of all, yew has high requirements for soil, we can use peaty soil with good air permeability as the soil for planting yew, and it is best not to use clay with poor air permeability.

Yew does not have very high requirements for light, and occasional basking in the sun is enough, but pay attention not to expose yew directly to the sun, which will cause a large amount of water evaporation of yew and cause yew leaves to dry up.

Yew does not need to be watered frequently, watering is generally done once a week or ten days or so, frequent watering may cause yew root rot, so do not water often.

Taxus in the growth period, pay attention to the yew fertilizer, generally the growth period of yew between March and November, during this period you have to apply some fertilizer to the yew from time to time, pay attention not to fertilize too much at one time, too much fertilizer is easy to cause root burning.

Hope my suggestion, you will be helpful, thanks.

1. Seed selection: Seeds can be picked after the fruit is ripe in October, or some high-quality seeds can also be purchased. Try not to use diseased and deformed seeds, otherwise it will be difficult to germinate.

2. Treatment: The seeds harvested by yourself need to be stored in layers of wet sand, and the seeds will be screened out after one year. Place the seeds in potassium permanganate, take them out after 10 minutes, wash them with water, dry them and use them.

3. Sowing: Strip sowing and sowing method can be used when planting, after sowing the seeds into the substrate, as long as it is covered with soil, and then wait for it to emerge.

1. Soil preparation: Soil should be prepared before planting, flower pots should have ventilation holes, and the soil should be soft and good. More breathable potting soil is more conducive to the growth of seedlings.

2. Seedling selection: You can buy seedlings in the local market, and try to choose stout, disease-free seedlings.

3. Planting: The planting method is also very simple, first dig a planting pit in the potting soil, then put the seedlings in, and then bury its roots with soil.

Pre-breeding planting method.

The conservation of yew resources and the rapid propagation of seedlings are the basis for the construction of paclitaxel timber forests, and the large-scale construction of yew plantations is the key to solving the problems of paclitaxel raw materials.

When using yew seeds to breed seedlings, it is necessary to pay attention to the storage method of seeds, and to mix sand seeds or control temperature, which has a good effect on germination and breaking dormancy habits after wintering. Before sowing, the seed coat should be rubbed, soaked in warm water, and treated with pesticides and hormones. Shade after emergence is the key to seedling raising.

It can prevent seedlings from burning at high temperature, keep them moist, and the light transmittance is appropriate at 40%. The seedling emergence rate of Taxus chinensis in Northeast China and Taxus chinensis in South China can reach 70 to 80%, and the seedling emergence temperature is required to be higher than 15 degrees.

The dynamic growth of seedlings is as follows: the plant height and stem thickness of seedlings grow slowly in the first two years of emergence, the plant height generally grows about 10cm per year, and the growth accelerates after one year of transplanting. 3 5 years The annual increase can reach 20 30 cm

Tissue culture takes advantage of the totipotency and clonability of plant cells. The young stems, needles, bark, cambium, arils, and embryos of yew plants were used as implants for culture research. （1）.

Excellent varieties of yew, such as the high-quality organs of Taxus northeast (with high paclitaxel content) were selected as explants, and a large number of tissue culture seedlings could be obtained in the laboratory after callus formation, rooting, and seedling bud cluster formation in the inoculation medium. After substrate transplanting, seedling training, and epidemic prevention, it becomes a production seedling. （2）.

The ratio of late to early callus formation of yew varies between different species and different plants of the same species. At the same time, it is related to factors such as explant type, sampling site and collection season, light conditions, and culture medium type. In the induction medium, Taxus northeastern, southern yew and Yunnan yew could form callus.

However, the formation varies depending on the type of yew and the plant. The results showed that a certain degree of hydrolyzed complex protein (Ca) could promote the growth of healed tissues of Taxus chinensis and Taxus chinensis, but the concentration was not conducive to the formation and accumulation of paclitaxel.

When the concentration is greater than 1%, it can promote the healing of the healed tissue and form new growth points, without affecting the accumulation of paclitaxel. After comparison, d is also conducive to the formation of healed tissue, and can also improve the induction rate. The callus in D medium was fresh in color, large and soft, and it was easy to induce callus from Taxus.

However, other media additions, such as cell suspension culture, B5 medium, and charcoal-derived sucrose, can also increase paclitaxel content. However, glucose in high-agricultural sucrose inhibits paclitaxel synthesis. At the same time, galactose has a significant effect on promoting cell growth.

Gibson's research has shown that both suspension culture and induction of callus cell growth and the formation of paclitaxel content are better in dark conditions than in light conditions. No matter what variety and part of tissue culture is used, it is necessary to select the cells with strong proliferative ability in the middle layer (the surface cells contain a large number of starch granules, the center cells are nucleus, and the tubular molecules that are prone to differentiation should appear). This facilitates the formation of cell-to-cell filaments, resulting in the formation of large cell clusters, which facilitates the signaling of small substances between cells.

As a result, the cells of yew exist in the form of cell clusters, produce functional cell bodies, promote the regionalization of cell masses, and the functional differentiation of cells, which is the premise for the production of metabolites by yew.