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Appraisal method for heat resistance of new wheat varieties and special temperature control shed

An identification method, a technology of heat resistance, applied in horticultural methods, botanical equipment and methods, applications, etc., can solve difficult breeding workers, provide a basis for selecting high-yield heat-resistant genotypes, and cannot explain high-yield or high-yield potential and other problems, to achieve the effect of convenient use, accurate test results, uniform and rapid cooling

Active Publication Date: 2022-05-06
DRY LAND FARMING INST OF HEBEI ACAD OF AGRI & FORESTRY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In terms of comprehensive evaluation of crop heat resistance, although researchers have proposed various identification methods, none of them can comprehensively express the relative and absolute yield levels of wheat varieties under heat stress, cannot explain high-yield or high-yield potential, and are difficult to provide for breeders. Basis for Selecting High Yield and Heat Resistance Genotypes

Method used

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  • Appraisal method for heat resistance of new wheat varieties and special temperature control shed
  • Appraisal method for heat resistance of new wheat varieties and special temperature control shed
  • Appraisal method for heat resistance of new wheat varieties and special temperature control shed

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] The first step is to organize the land

[0082] Arrange plots in two identical test areas according to the number of wheat varieties to be identified, the number of plots in each test area = (number of wheat varieties to be identified + 1) × 2;

[0083] The second step is to select the comparison species

[0084] Take Heng 4399 as the control variety

[0085] The third step is to sow

[0086] Plant the same amount of the control variety and the wheat variety to be identified in two well-arranged plots in the test area, and sow the corresponding plots of the control variety and each wheat variety to be identified according to the number of plots that have been sorted out, and the sowing amount per hectare 2.9 million tablets;

[0087] The fourth step, install the temperature recorder

[0088] Install temperature recorders at 85 cm from the ground in the two test areas,

[0089] The fifth step is to cover the temperature-controlled shed

[0090] After 17 days after ...

Embodiment 2

[0102] The first step is to organize the land

[0103] According to the number of wheat varieties that need to be identified, the plots are arranged in two identical test areas. The number of plots in each test area = (number of wheat varieties to be identified + 1) × 3, and the plots use 2 rows. , the row length is 2 meters, the row spacing is 0.2 meters, and the plot area is 0.8 m 2 ;

[0104] The second step is to select the comparison species

[0105] Take Heng 4399 as the control variety

[0106] The third step is to sow

[0107] Plant the same amount of the control variety and the wheat variety to be identified in two well-arranged plots in the test area, and sow the corresponding plots of the control variety and each wheat variety to be identified according to the number of plots that have been sorted out, and the sowing amount per hectare 3.1 million tablets;

[0108] The fourth step, install the temperature recorder

[0109] Install temperature recorders at 95 c...

Embodiment 3

[0123] The first step is to organize the land

[0124] According to the number of wheat varieties that need to be identified, arrange the plots in two identical test areas, the number of plots in each test area = (number of wheat varieties to be identified + 1) × 3, and the plots use 2 rows , the row length is 2 meters, the row spacing is 0.2 meters, and the plot area is 0.8 m 2 ;

[0125] The second step is to select the comparison species

[0126] Take Heng 4399 as the control variety

[0127] The third step is to sow

[0128] Plant the control variety and the wheat variety to be identified in the sorted plots, and sow the corresponding plots of the control variety and each wheat variety to be identified according to the number of plots that have been sorted out, with a seeding rate of 3 million grains per hectare;

[0129] The fourth step, install the temperature recorder

[0130] Temperature recorders were installed in the two test areas at a distance of 89 cm from th...

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Abstract

The invention belongs to the technical field of identification methods for heat resistance of varieties, and discloses a method for identification of heat resistance of new wheat varieties. Its main technical features are as follows: the wheat variety and the control variety to be identified are planted in the same test area, and a temperature-controlled shed is built on one of the test areas. After 19 days, cover the shed film of the temperature-controlled shed; apply heating to the test area, remove the temperature-controlled shed after 20 days of intervention, and weigh the grain yield GY of each wheat variety required for identification with the temperature-controlled shed after harvest S.H and the grain yield GY of each wheat cultivar required for identification without a temperature-controlled shed S.N , weigh the grain yield GY of the control variety with a temperature-controlled shed CK.H and the grain yield GY of the control variety without temperature-controlled shed CK.N ;According to the formula HRI=GY S.H 2 ·GY S.N ‑1 ·GY CK.N ·(GY CK.H 2 ) ‑1 , to obtain the heat resistance index HRI of the wheat variety to be identified. The heat resistance appraisal result is more intuitive.

Description

technical field [0001] The invention belongs to the technical field of identification methods for heat resistance of new wheat varieties, and in particular relates to an identification method for heat resistance of new wheat varieties and a special temperature-controlled shed. Background technique [0002] my country suffers from high temperature stress in a relatively large area and frequently. With the gradual warming of the global climate, it is bound to seriously affect wheat production. If heat stress occurs in the early and late stages of wheat growth, it will intensify its respiration, reduce photosynthetic efficiency, increase cell membrane permeability, reduce the activity of enzymes such as starch synthase related to the degree of grain filling, and accelerate plant aging, resulting in spike and grain loss. The number and grain weight decrease, which eventually leads to a decrease in yield and quality. [0003] The "high temperature forced ripening" disaster often...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G7/06A01G22/20A01G9/16A01G9/24
CPCA01G7/06A01G9/16A01G9/246A01G22/00Y02A40/25
Inventor 乔文臣李强陈秀敏魏建伟李丁孟祥海孙书娈李慧敏赵明辉赵凤梧
Owner DRY LAND FARMING INST OF HEBEI ACAD OF AGRI & FORESTRY SCI