Research method for improving drought resistance of quercus rubra Linn. through melatonin

A melatonin and anti-drought technology, applied in horticultural methods, botanical equipment and methods, material inspection products, etc., can solve problems such as blocked plant growth and metabolic activities, damage to redox balance, and plant damage, and achieve improved scavenging activity Oxygen capacity, antioxidant enzyme activity improvement, damage relief effect

Inactive Publication Date: 2019-12-13
ZHEJIANG FORESTRY UNIVERSITY
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AI Technical Summary

Problems solved by technology

Under drought stress, plants cannot absorb enough water from the soil, the normal growth and metabolic activities of plants are hindered, and the redox balance in plants is destroyed, which will lead to the closure of leaf stomata, affecting normal photosynthesis of plants, and causing irreversible damage to plants in severe cases. damage

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  • Research method for improving drought resistance of quercus rubra Linn. through melatonin
  • Research method for improving drought resistance of quercus rubra Linn. through melatonin

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Embodiment Construction

[0021] A kind of melatonin of the present invention improves the research method of North American red oak anti-drought ability, comprises the following steps:

[0022] Step 1: Experimental materials and methods

[0023] Select annual seedlings with consistent growth and transplant them into plastic pots with an inner diameter of 13 cm and a height of 17 cm. The substrate in the pot is sandy soil. All potted plants maintain 80% to 85% of the field water holding capacity. Start pretreatment of seedlings in mid-July: Spray 100μM melatonin solution every other day, 5 times in total, spraying time is 17:00~18:00, each time the leaves and backs are wet and dripping The other group performed the same procedure using distilled water instead of melatonin solution. The next day after the last spraying of melatonin or distilled water, different concentrations of PEG (using 1 / 2 Hoagland nutrient solution configuration) solutions were used to simulate the drought test on North American r...

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Abstract

The invention provides a research method for improving drought resistance of quercus rubra Linn. through melatonin. The method comprises the following steps of selecting annual seedlings with consistent growth vigor, pretreating the seedlings in the middle of July, spraying a 100-micron melatonin solution once every other day for 5 times in total, and replacing the melatonin solution with distilled water in another group to perform the same operation; carrying out a simulated drought test on quercus rubra Linn. with PEG solutions different in concentration on the next day after the melatonin or the distilled water is sprayed for the last time, wherein the PEG solutions are prepared from 1 / 2 Hogland nutrient solutions; setting a plurality of treatment groups and measuring indexes of superoxide dismutase and peroxidase activity of each treatment group. Through data processing and analysis, results show that under the drought stress simulated by PEG, the antioxidant enzyme activity of quercus rubra Linn. is improved, the capacity of quercus rubra Linn. to clean away active oxygen can be improved by spraying the 100-micron melatonin before the drought stress starts, and the damage caused by the drought stress to plants can be effectively relieved.

Description

【Technical field】 [0001] The invention relates to the technical field of the growth research of the North American red oak under drought stress, in particular to a research method for improving the drought resistance of the North American red oak by melatonin. 【Background technique】 [0002] North American red oak (Quercus rubra Linn.) belongs to the Fagaceae, native to the eastern United States and southern Canada, and widely distributed in my country. Because of its rapid growth, easy transplanting, anti-pollution, cold and drought resistance, low soil requirements, and strong adaptability, it is not only a pioneer tree species for afforestation on barren hills and barren sites, but also suitable for urban greening and ground cover. Restoration of medium and large area planting. At present, the area of ​​arid and semi-arid areas in the world accounts for about half of the cultivated land area, and the area of ​​arid and semi-arid areas in my country accounts for about 26....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G7/06G01N33/00
CPCA01G7/06A01G17/005G01N33/0098
Inventor 闫道良袁虎威余敏芬何立平李东宾王晓飞何漪郑炳松
Owner ZHEJIANG FORESTRY UNIVERSITY
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