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Field identification and evaluation method for wheat late frost resistance

An evaluation method, a frost technique, applied in horticultural methods, botanical equipment and methods, resources, etc., to solve problems such as threats to wheat production

Active Publication Date: 2020-06-19
COTTON RES INST SHANXI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Late frosts therefore pose a serious threat to wheat production

Method used

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  • Field identification and evaluation method for wheat late frost resistance
  • Field identification and evaluation method for wheat late frost resistance
  • Field identification and evaluation method for wheat late frost resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The habits of the tested wheat varieties and their planting units are shown in Table 1.

[0031] Table 1 Tested wheat varieties and their planting units

[0032]

[0033]

[0034] Sowed on October 8, 2017, the basic seedlings are 2.55 million plants / hm2, the row spacing is 25cm, and the area of ​​the plot is 15m 2 .

[0035] Greening period: On March 1, 2018, greenhouses will be built on various test plots. The height of the greenhouse is 1.7m, and the length and width are determined according to the area of ​​the plot. There are ventilation channels at the lower 20cm on both sides of the greenhouse, which can be adjusted by adjusting the size of the vents. The temperature in the greenhouse, the daily average temperature in the greenhouse is 4.4-27.1°C, the extreme high temperature is limited to 32°C, and the daily average temperature increases by 0.85°C. The warming time was maintained for 28 days, and the greenhouse was removed on March 28.

[0036] Three days ...

Embodiment 2

[0062] The habits of the tested wheat varieties and their planting units are shown in Table 6.

[0063] Table 6 Tested wheat varieties and their planting units

[0064]

[0065] Sowed on October 8, 2018, the basic seedlings are 2.55 million plants / hm2, the row spacing is 25cm, and the area of ​​the plot is 15m 2 .

[0066] Greening period: On March 8, 2019, greenhouses will be built on various test plots. The height of the greenhouse is 1.7m, and the length and width are determined according to the area of ​​the plot. There are ventilation channels at the lower 20cm on both sides of the greenhouse, which can be adjusted by adjusting the size of the vents. The temperature in the greenhouse, the daily average temperature in the greenhouse is 4.4-27.1°C, the extreme high temperature is limited to 32°C, and the daily average temperature has increased by 0.9°C. The warming time was maintained for 20 days, and the greenhouse was removed on March 28.

[0067] Three days after r...

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Abstract

The invention discloses a field identification and evaluation method for wheat late frost resistance, which comprises the following steps: periodically heating different wheat varieties in a reviving-jointing stage until a connectivum period, and carrying out simulated frost in the field by using natural low-temperature frost or a manual moving device in the connectivum period, and carrying out clustering analysis according to the morphological, physiological, biochemical and yield indexes of the variety to be tested to evaluate the frost resistance. Compared with a method for evaluating the frost resistance of the wheat by using a single index or few indexes in a potting environment in the prior art, the method disclosed by the invention is more objective, accurate and reliable, and a technical basis is provided for frost resistance identification, frost resistance variety breeding and production of wheat varieties.

Description

technical field [0001] The invention belongs to the technical field of wheat breeding, in particular to a field identification and evaluation method for late frost resistance ability of wheat. Background technique [0002] Frost damage is one of the main meteorological disasters in wheat production. Frost injury is a kind of sudden disaster caused by plant injury or death caused by the sudden drop of temperature below 0°C during the growth period of plants, causing the plant tissue to freeze and the protoplasm to be destroyed. In the main producing areas of winter wheat in my country, frost occurs in early winter and is called early (autumn) frost, and occurs in spring and is called late (spring) frost. Early frost mainly damages the leaves of wheat, causing the leaf tips or a section of leaves to freeze, and the damage is less severe. The growth and development of wheat accelerated after vernalization, and the sensitivity to low temperature increased as the young panicle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/20A01G7/06G01N21/64G01N33/00G06Q50/02G06Q10/06
CPCA01G22/20A01G7/06G01N33/0098G01N21/6428G01N21/643G06Q50/02G06Q10/06393
Inventor 席凯鹏张建诚席吉龙杨娜王珂姚景珍席天元许爱玲王健卫晓东
Owner COTTON RES INST SHANXI ACAD OF AGRI SCI
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