Method for inducing tomato to improve low temperature resistance

A tomato and low temperature technology, applied in the agricultural field, can solve the problems of expensive methods of plant resistance to low temperature, changing the flavor and nutritional value of vegetables, and increasing the burden of energy consumption on farmers, so as to improve photosynthesis efficiency and seedling rate, and promote survival. efficiency, reducing energy consumption

Active Publication Date: 2015-08-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is expensive and takes a long time to improve the ability of plants to resist low temperature through traditional genetic breeding and transgenic technology, and the issue of genetically modified food has always been controversial
Using heating equipment to heat in winter and spring is suitable for economical vegetable crops, but energy consumption greatly increases the burden on farmers and will inevitably lead to environmental pollution, so it is not a long-term solution
The low temperature stress can be alleviated to a certain extent by using grafting technology, but due to the characteristics of rootstocks, the flavor and nutritional value of vegetables are often changed, and the operation is complicated and cumbersome

Method used

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  • Method for inducing tomato to improve low temperature resistance
  • Method for inducing tomato to improve low temperature resistance
  • Method for inducing tomato to improve low temperature resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The tomato variety used in the experiment was Ailsa Craig. The seeds were sown in plastic pots filled with a 3:1 peat and perlite compound cultivation substrate. After emergence, water was kept in accordance with the moisture content of the substrate to keep the substrate moist. Hoagland’s nutrient solution was poured throughout the process. When the four leaves are one heart, low-temperature treatment is carried out, and the treatment temperature is 0 degrees during the day and -2 degrees at night.

[0021] Four treatments were set up in the experiment: 1) control group (no light treatment at night); 2) 10 μmol m -2 the s -1 Far-red light treatment; 3) 20 μmol m at night -2 the s -1 Far-red light treatment; 4) 30 μmol m at night -2 the s -1 Far-red light treatment. 8 hours of lighting treatment at 20PM-6AM at night, and 72 hours of low temperature treatment. Immediately after the low temperature treatment, samples were taken to measure the expression of CBF1 gene...

Embodiment 2

[0035] The tomato variety used in the experiment was Zheza No. 5. The seeds were sown in plastic pots filled with a 3:1 peat and perlite composite cultivation medium. After emergence, water according to the moisture content of the substrate to keep the substrate moist. During the whole process, Hoagland nutrition was poured. Liquid, when the four leaves are one heart, carry out low temperature treatment, the treatment temperature is 0 degrees during the day and -2 degrees at night.

[0036] Carry out plant culture according to the exactly same culture mode as Example 1, establish 4 processings: 1) control group (no light treatment at night); 2) 20 μ mol m -2 the s -1Far-red light treatment, the treatment time is 2 hours (12PM-2AM); 3) 20μmol m at night -2 the s -1 Far-red light treatment, the treatment time is 4 hours (12PM-2AM, 4AM-6AM); 4) 20μmol m at night -2 the s -1 Far-red light treatment, the treatment time is 6 hours (8PM-10PM; 12PM-2AM, 4AM-6AM). The low temperat...

Embodiment 3

[0042] The tomato variety used in the experiment is Hezuo 903. The seeds were sown on November 20 in a seedling tray filled with a 3:1 peat and perlite composite cultivation medium for seedling cultivation. After emergence, water according to the moisture content of the substrate to keep the substrate moist. Pour Hoagland nutrient solution. After the emergence of tomato seedlings, the tomatoes were planted in plastic greenhouses on December 30, and two treatments were set up: 1) the control group (no far-red light supplementation treatment at the adult plant stage); 2) far-red LED night light (adult plant stage) Carry out far-red light supplement light treatment at night). It started on January 5 of the following year, and the supplementary light continued until February 5. Far-red LED bulbs (10 watts / piece) are installed at 50 cm above the tomato plant, and can be raised and lowered. The installation density is 2 pieces / square meter; the wavelength range of far-red light is ...

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Abstract

The invention discloses a method for inducing tomato to improve low temperature resistance. Tomato plants are irradiated with far-red light LED light sources to supplement light during the night, wherein the intensity of the far-red light is 10-50micron mol m-2s-1, the wavelength scope falls in the scope of 675-780nm, the wavelength of peak value lambda max is 735nm, and the power of the far-red light LED light source is 5-100watt. The far-red light LED light sources are installed on the upper portion of tomato plants, and the installation density is 1-5watt/square meter. LED lamps emitting far-infrared light source are employed to supplement light for plants during the night, so as to induce CBF1 expression of tomato cold-resistant genes, reduce the light inhibition of low temperature on tomato photosystems II, and improve photosynthesis efficiency and seedling rate. The method can be used for tomato seedling growing in winter and spring, and winter, spring and overwintering cultivating. The resistance to low temperature and severe cold of the tomato is improved, the energy consumption for heating is lowered, food safety is ensured, and tomato production is ensured.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for inducing tomato to improve low temperature resistance. Background technique [0002] For a long time, vegetable production around the world has often been affected by environmental stresses such as low temperature, high temperature, salt damage, drought, diseases and insect pests, and the total crop production is reduced by more than 50% every year. Among them, temperature is the most basic determinant and key factor affecting plant growth and development. In recent years, under the joint action of the greenhouse effect and human activities, extreme climate phenomena have occurred frequently, and the chilling injury and freezing injury in winter and spring in various parts of my country have become increasingly serious, which has greatly restricted the production and supply of vegetables in our country. Chilling injury is the main factor limiting the yield and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G7/04
CPCA01G7/045Y02P60/14
Inventor 喻景权王峰周艳虹王蒙蒙
Owner ZHEJIANG UNIV
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