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Method for identifying high-temperature tolerance of cotton through temperature increasing and decreasing

A technology of high temperature tolerance and temperature reduction, which is applied in horticultural methods, botanical equipment and methods, horticulture, etc., and can solve problems such as heat resistance errors in identification results

Active Publication Date: 2017-11-24
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Although these identification methods are simple to operate, they do not fully consider the daily temperature period change law under natural conditions and the temperature change law during high temperature occurrence, which may easily cause certain errors between the identification results and the true heat resistance of crops.

Method used

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  • Method for identifying high-temperature tolerance of cotton through temperature increasing and decreasing
  • Method for identifying high-temperature tolerance of cotton through temperature increasing and decreasing
  • Method for identifying high-temperature tolerance of cotton through temperature increasing and decreasing

Examples

Experimental program
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Embodiment 1

[0022] The experiment was carried out at the Agricultural Science Base of Changjiang University. Eleven upland cotton varieties were selected and seedlings were raised in nutrient pots. After the cotyledons were flattened, they were transplanted into pots (14 cm high, 17 cm inner diameter), and 3 plants were planted in each pot. temperature < 30°C) and grow in an environment. After entering the full flowering stage, move the materials into an automatic temperature-controlled shed, and move each material into 4 pots.

[0023] Referring to the law of sunrise, sunset, and daily temperature changes in the Yangtze River Basin, the daily temperature changes in the simulation setting process are shown in Table 1, and the daily temperature changes in the simulation setting cooling process are shown in Table 2.

[0024] Table 1 Daily temperature change during heating process Set temperature (°C)

[0025]

[0026] Table 2. Daily temperature change during the cooling process. Set temp...

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PUM

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Abstract

The invention discloses a method for identifying the high-temperature tolerance of cotton through temperature increasing and decreasing, and belongs to the field of crop stress resistance identification. According to the method, the environment temperature is controlled through manual simulation, the daily air temperature change trend under natural conditions and the change rule of air temperature between different days in a single high-temperature weather generation process are simulated, and the pollen scattering rate of plants in a material (varieties and strains) sample group serves as an identification index of the high-temperature tolerance of the cotton. The selection efficiency and accuracy can be improved, and the method is particularly suitable for identification of the heat resistance of cotton genetic breeding materials.

Description

technical field [0001] The invention relates to the field of identification of crop stress resistance, in particular to a method for identifying high temperature tolerance of cotton through a process of temperature rise and high temperature continuation and a process of temperature drop and temperature return to normal temperature. Background technique [0002] In recent years, extreme high-temperature weather has occurred frequently, and high-temperature heat damage is becoming more and more serious. The meteorological department refers to the weather phenomenon with the daily maximum temperature higher than 35°C as high temperature, 3 days of continuous high temperature can be regarded as general high temperature hazard weather, and 5 days of continuous high temperature can be regarded as severe high temperature hazard weather. The main cotton-growing areas in my country are Xinjiang cotton area, the cotton area of ​​the Huanghuai River Basin and the cotton area of ​​the Y...

Claims

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Application Information

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IPC IPC(8): A01G7/00A01G7/06
CPCA01G7/00A01G7/06
Inventor 张文英徐乐韦巧徐延浩
Owner YANGTZE UNIVERSITY
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