Vegetative Storage and Preservation of Tea Plant
The direct field preservation of tea plant vegetative body needs a lot of land and labor. Therefore, the long-term preservation techniques of tea plant roots, seedlings, seeds and pollen were studied.
The preservation of roots is to sterilize lignified roots before germination in spring, store them in plastic bags together with sterilized semi-dry soil or water moss, and place them in an environment of 1~5℃. After 7 years of preservation, adventitious bud production reached 70%. The roots can regenerate after 6 years at 1℃. Carbohydrate consumption in root tissues can last for about 12 years when stored at low temperatures. Root survival can be judged by the amount of potassium dissolved from the roots.
2-year-old cuttings can be stored in early spring and sealed at 5℃ for 4 years. The survival rate of different varieties is between 20% and 26%. The preserved tea seedlings can be taken out and planted, and can be used as hybrid materials in the second year, with a fruiting rate of 63%~70%. The maximum shelf life is 9 years.
After 5 years of storage at-80℃, the germination rate of pollen was still 70%, and after 12 years, the germination rate was 60%, which made it possible for varieties with different flowering stages to cross.
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Fine varieties of tea
Breeding and popularizing fine tea varieties is a fundamental measure to improve the quality and yield of tea and increase the economic benefits of growing tea. From a large number of production practice and scientific research results, it is proved that the selection of excellent tea varieties plays a role in tea production in many aspects: first, it can increase the yield. Tea yield is determined by comprehensive factors such as the number and weight of buds and leaves per unit area, the growth rate of buds and leaves in the annual growth period, the length of vegetative growth period and so on. Under the same conditions, different varieties have different yield factors, so the yield is different.
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Seedling raising technique of short-spike cuttage of tea plant in nutrient bag
The technology of short spike cuttage of tea plant in nutrient bag is a process of directly cutting short spike in nutrition bag and cultivating plants. This method of asexual reproduction can effectively maintain the characteristics of the female parent tea tree, and the characters of the offspring are the same, which is conducive to the cultivation of strong seedlings, transplanting without harming the root system, and effectively improving the survival rate. However, the technical requirements of raising seedlings are high, and the working procedure is relatively complex, which can easily lead to failure if they are not mastered well. Seedlings should pay attention to the following technical points: first, building a shade shed has the function of sun protection, wind protection and frost prevention. It is an important link in the success or failure of raising seedlings in nutrition bags. Shade
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