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Identification method of cold tolerance of tea tree species

An identification method and cold tolerance technology, which can be used in horticultural methods, botanical equipment and methods, material inspection products, etc., and can solve problems such as being restricted and unable to carry out identification.

Active Publication Date: 2019-08-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These tea tree cold resistance identification methods all have deficiencies. For example, the "field natural identification method" is completely restricted by the winter temperature, and identification cannot be carried out in winter when the temperature is relatively high.

Method used

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  • Identification method of cold tolerance of tea tree species
  • Identification method of cold tolerance of tea tree species
  • Identification method of cold tolerance of tea tree species

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1, a kind of identification method of tea tree variety cold tolerance:

[0060] 1. Cut 12 new shoots with more than 5 mature leaves from the 6-year-old tea trees of the tea tree varieties '2-49' and '5-28', and divide them into 2 groups of 6 branches, and one group is the control One group is the test group; insert 5-6cm of the base of the new shoots of the control group into a beaker or a water tray filled with clear water, and place it at room temperature (20°C-25°C) for 2 hours; put the shoots of the test group into the temperature Freeze in a freezer set at -15°C for 2 hours, then take out and insert the base of the new shoot 5-6cm into a beaker or water tray filled with clear water (that is, the depth of the new shoot inserted into the water is 5-6cm), at room temperature Conditioned for 2 hours.

[0061] 2. Measure the color difference value a of the third leaf under the terminal bud of the new shoot tail of the test group and the control group with a ...

Embodiment 2

[0064] Embodiment 2, a kind of identification method of tea tree variety cold tolerance:

[0065] In the process of tea tree variety selection, generally a number of varieties to be identified and reference varieties are planted on plots with the same fertility level, and then after the overwintering period of low temperature and freezing damage, the field freezing conditions are investigated to compare the differences between the varieties to be identified and the reference varieties. In order to obtain the cold resistance information of the varieties to be identified, it can be used as a reference for the promotion or introduction of varieties in the future. However, if there is no low temperature and freezing climate during the test period, the cold resistance appraisal cannot be carried out. In this case, the technique of the present invention can be applied for identification.

[0066] In this embodiment, the 'Fuding Dabai tea' whose half-lethal temperature has been iden...

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Abstract

The invention discloses an identification method of the cold tolerance of a tea tree species. The method includes the following steps of cutting shoots of a tea tree crown with the cold tolerance to be identified to be divided into two groups, freezing the tea tree shoots in the test group, and for the tea tree shoots in the contrast group and the frozen tea tree shoots in the test group, inserting base parts of the tea tree shoots in water according to the insertion depth of 4-6 cm, putting the shoots at a room temperature, taking the second leaf, the third leaf and the fourth leaf below theterminal bud at the tail portion of each shoot, measuring the chromatism value a and calculating the antifreeze index X to obtain the freeze injury index, wherein the lower the freeze injury index is,the higher the cold tolerance of the species is. By using the frozen tea tree shoots and then comparing the unfrozen tea tree leaves with the frozen tea tree leaves to obtain the chromatism value change, the cold tolerance of a tea tree is identified; the method has the technical advantages of being correct in detecting result and rapid and convenient to implement.

Description

technical field [0001] The invention relates to the field of winter cold resistance identification of plants, in particular to a method for freezing tea tree shoots in a refrigerator, and then measuring the color difference of tea tree leaves before and after freezing, so as to predict the field cold resistance of tea trees in winter. Background technique [0002] Tea trees originated from the tropical rainforest in Southwest my country, and have the characteristics of loving the temperature and fearing the cold in the growth environment. Therefore, freezing injury caused by low temperature stress in winter in tea tree introduction areas is a common natural disaster in tea tree cultivation. It can lead to severe inhibition of tea tree growth, and in severe cases, tea tree damage or even death, which brings serious losses to tea production. However, during the long-term propagation and evolution of tea trees, due to the different distribution areas, they have withstood differ...

Claims

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Application Information

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IPC IPC(8): A01G7/00G01N33/00G01N21/25
CPCA01G7/00G01N21/25G01N33/0098
Inventor 梁月荣施云龙郑新强陆建良叶俭慧
Owner ZHEJIANG UNIV
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