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Method for increasing content of flavonoids hydroponic lettuce in greenhouse by adding UV-B radiation

A UV-B and flavonoid technology, applied in horticultural methods, botanical equipment and methods, cultivation, etc., can solve problems such as unsatisfied, affecting vegetable yield and quality, and single light source, so as to increase flavonoid content and increase nutrition Quality, improve the effect of light environment

Inactive Publication Date: 2019-01-04
SOUTH CHINA NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, usually the artificial light source on the hydroponic shelf in the greenhouse is single, all are cold white light and warm yellow light, which do not meet all the components of natural light, which seriously affects the yield and quality of vegetables

Method used

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  • Method for increasing content of flavonoids hydroponic lettuce in greenhouse by adding UV-B radiation
  • Method for increasing content of flavonoids hydroponic lettuce in greenhouse by adding UV-B radiation

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Embodiment

[0028] A method for increasing the flavonoid content of greenhouse hydroponic lettuce by adding UV-B radiation, comprising the following steps:

[0029] Take lettuce seeds, disinfect them with 30% sodium hypochlorite solution for 5 minutes, wash the disinfectant with pure water, disinfect the glass culture dish and gauze with 30% hydrogen peroxide solution and wash the disinfectant with water, spread the gauze on the bottom of the culture dish and add 1 Wet the lettuce seeds with / 2 Hoagland's culture medium evenly on the gauze, seal it with a hole-punched plastic wrap and culture it under white light for 7 days, and transfer it to a hydroponic device containing 1 / 2 Hoagland's culture medium Medium culture for 2 weeks, add 0.6-0.8W m every day 11:30-14:30 for 8 days before harvest -2 UV-B, the 3rd and 4th pair of lettuce leaves were taken every two days to detect the flavonoid content.

[0030] The UV-B lamp tube is placed in parallel above the lettuce, and the radiation inte...

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Abstract

The invention discloses a method for increasing the content of flavonoids in hydroponic lettuce in a greenhouse by adding UV-B radiation. The method comprises the steps of taking lettuce seeds, conducting disinfecting and placing the seeds on gauze infiltrated with a 1 / 2 Hoagland nutrient solution; placing the gauze and lettuce seeds in a dish, sealing the dish with a plastic wrap with holes, placing the dish in an environment with a temperature of 15-20 DEG C and white light to conduct cultivation until germination, continuing conducting cultivation for 5-7 days, then conducting hydroponics by a 1 / 2 Hoagland nutrient solution for 2 to 3 weeks, then adding UV-B radiation to the lettuce seedlings for 3 to 4 hours per day, repeating the UV-B radiation operation for 6 to 8 days, and then harvesting lettuce. The method of the invention can significantly improve and stably maintain the content of flavonoids in the hydroponic lettuce in the greenhouse, wherein the flavonoid content increasesby 30% or more after 6 days of UV-B radiation, the nutritional quality of the lettuce is increased, and growth of the lettuce is not inhibited, and the organism amount is not affected.

Description

technical field [0001] The invention belongs to the field of ecological agricultural production, and in particular relates to a method for increasing the flavonoid content of hydroponic lettuce in a greenhouse by adding UV-B radiation. Background technique [0002] Lettuce (Lactuca sativa L) is a common name for leaf lettuce. It belongs to the genus Lactuca of Compositae. It is an annual or biennial herbaceous plant. The leaves are obovate and densely formed into cabbage-shaped leaf balls; Phenolic antioxidant substances, can be eaten raw, is the most commonly used vegetable variety for making salads, and is considered to be one of the most popular healthy vegetables in Chinese and foreign cuisines. [0003] Lettuce has the effects of clearing the liver and gallbladder, clearing heat and calming the nerves, and nourishing the stomach. It is suitable for those who lose weight, those with high cholesterol, neurasthenia, patients with liver and gallbladder diseases and stomach...

Claims

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Application Information

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IPC IPC(8): A01G31/00A01G7/04
CPCA01G7/04A01G31/00Y02P60/14
Inventor 李韶山吕桂珍林莉梅李冬兵熊甜甜
Owner SOUTH CHINA NORMAL UNIVERSITY
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