Cold resistance appraisal method of cotyledon period

An identification method, cotton seed technology, applied in horticultural methods, botanical equipment and methods, instruments, etc., can solve problems such as poor cold adaptability, and achieve the effects of short cycle, strong operability, and detailed division

Active Publication Date: 2016-03-30
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Cotton originated in the tropics and subtropics. It is a warm-loving crop. It is sensitive to cold stress and has poor cold adaptability.

Method used

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  • Cold resistance appraisal method of cotyledon period
  • Cold resistance appraisal method of cotyledon period
  • Cold resistance appraisal method of cotyledon period

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 1. Selection of materials

[0058] The materials used in the screening of cold resistance identification indicators at the cotyledon stage of upland cotton are 47 upland cotton varieties that are widely promoted at present. These materials have excellent comprehensive characteristics such as field agronomic traits, disease resistance, Resistant to insects, the yield can ensure the smooth progress of subsequent indoor experiments. Its origin and pedigree are shown in Table 5. They come from the United States and North China, Central China, Shandong and other places in China, with a wide range of sources and rich genetic variation.

[0059] Table 5 The source and pedigree of the test materials used in the identification of cold resistance at the cotyledon stage

[0060]

[0061]

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Abstract

The invention relates to the cold resistance appraisal of plants, and particularly provides a cold resistance appraisal method of a cotyledon period. The cold resistance appraisal method of the cotyledon period comprises the following steps: carrying out low-temperature processing on the strong seedlings of the cotyledon periods of a plurality of strains to be tested, wherein the plurality of strains exhibit even growth vigor; then, causing the strains to recover growth under a normal temperature; investigating the states of stems and a situation that cotyledons are damaged; judging a cold damage level according to a standard; calculating the cold resistance index of a variety to be tested; and appraising the cold resistance level according to the standard. The appraisal method disclosed by the invention has the advantages of being simple, visual, reliable and short in periods, can effectively carry out the cold resistance screening of cotton seedling stage germplasm resources and varieties, and paves the way for the further research of the cold resistance breeding and the cold resistance mechanism of the cotton.

Description

technical field [0001] The invention relates to identification of cold resistance of plants, in particular to a method for identification of cold resistance at the cotyledon stage of cotton. Background technique [0002] In nature, temperature is an important environmental factor affecting plant growth and metabolism. Plants are inevitably stressed by various environmental factors, among which low temperature is one of the main environmental stress factors affecting plant survival. Low temperature stress significantly inhibits the viability of crops, crop yield, growth and development, photosynthetic rate and mineral element absorption rate, and seriously leads to plant death. Chilling damage occurs in the warm season of crop growth, and does not cause obvious symptoms such as withering and death of crops like frost and other disasters. The damage may occur when the cooling temperature is between 15°C and 0°C. Symptoms of chilling injury mainly include: surface tissue lesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/02A01G7/06
CPCA01G7/06G06Q50/02
Inventor 王俊娟叶武威王德龙阴祖军穆敏王帅陆许可樊伟莉郭丽雪
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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