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Method for identifying and evaluating cold resistance of ramie germplasm resources

A technology of cold resistance and ramie, which is applied in the field of cold resistance identification and evaluation of ramie germplasm resources, can solve problems such as difficulty in unifying freezing damage temperature, no feasible cold resistance identification method, inconvenient judgment, etc., and achieves stable and reliable evaluation and classification data, It is convenient for cold resistance identification operation and statistical effect

Inactive Publication Date: 2015-11-11
INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Jie Yucheng et al. (2007) wrote "Description Specifications and Data Standards of Ramie Germplasm Resources" involving the identification method of ramie cold resistance, but the identification method relies on the natural environment freezing damage, it is difficult to unify the freezing damage temperature, and the classification evaluation standard is based on the "freezing damage "It is not easy to judge, and it is impossible to scientifically and accurately identify the cold resistance of ramie germplasm, that is to say, there is no feasible cold resistance identification method and evaluation system for ramie at present.

Method used

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  • Method for identifying and evaluating cold resistance of ramie germplasm resources
  • Method for identifying and evaluating cold resistance of ramie germplasm resources

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Use the method provided by the invention to evaluate the cold resistance of ramie germplasm resources

[0026] (1) Ramie germplasm seedling cultivation:

[0027] The 15 ramie germplasms used in this experiment were provided by the National Germplasm Ramie Garden of the Institute of Hemp, Chinese Academy of Agricultural Sciences, namely: Hubei fine leaf green, Wanxian ramie, green ramie, Japanese ramie, Yihuang ramie, Sichuan ramie No. 2, Dayong yellow shell hemp, Huangpi ramie, Zhongzhu No. 1, Qianzhu No. 1, Jiujiang hemp, Liping green hemp, Chuanzhu No. 8, Longdijia green hemp, and Qingpi ramie. On March 10, 2014, the ramie seed bushes were excavated from the ramie germplasm garden, and the seed bushes were required to be free of viruses and rot. Finely cut ramie seed bushes, plant about 25g seed bushes with 8-10 bud points in plastic flower pots, and repeat 3 times in 5 pots for each germplasm.

[0028] The soil configuration method in the flower pot is: the loess i...

Embodiment 2

[0037] Embodiment 2 comparative example

[0038] Correlation between frostbitten leaves and plant mortality of ramie germplasm under low temperature stress

[0039] The most intuitive effect of low temperature stress is the change of plant phenotype, especially the change of morphological characteristics. Plant death is one of the changes in morphological characteristics, but the first sensitive response to low temperature stress is the leaves, so some scientists evaluate the cold resistance of plant germplasm by leaf browning and shedding. The leaves of ramie began to brown at the edges under 4℃ stress for 2 days, and the browning degree of leaves increased under 2℃ stress, and the leaves appeared to fall off after 2 days of stress. In this case, the correlation between frostbitten leaves of ramie germplasm under 2°C low temperature stress and plant mortality of 0°C stress for 2 days was studied (see Table 2). Although there is a big difference between browned leaves and fa...

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Abstract

The invention belongs to the field of horticulture, and particularly relates to a method for identifying and evaluating cold resistance of ramie germplasm resources. In order to evaluate the cold resistance of ramie rapidly, accurately and easily, researchers screen multiple indexes such as physiological indexes, ecological indexes and morphological indexes, but it is found in research that most of the indexes have no relationship with plant mortality, and direct evaluation on the cold resistance of the ramie through the indexes is difficult. According to the method for identifying and evaluating the cold resistance of the ramie germplasm resources, operation is easy, evaluation and classification data are stable and reliable, and the defect that ramie germplasm can not be identified accurately under the natural environment is overcome; time limit does not exist, and ramie germplasm cold resistance identification can be conducted from late February to mid October; the evaluation and classification of the cold resistance on the ramie germplasm resources are facilitated, and screening of ramie germplasm which has the cold resistance and selection of ramie varieties which have the cold resistance are facilitated.

Description

technical field [0001] The invention relates to the field of identification and evaluation of ramie germplasm resources, in particular to a method for identification and evaluation of cold resistance of ramie germplasm resources. Background technique [0002] Temperature is an important environmental factor affecting crop growth and yield formation, and low temperature is a major adversity factor. Under the general trend of global temperature warming, the temperature changes abnormally, extreme weather occurs frequently, and the freezing disaster of crops is becoming more and more serious, which has brought huge losses to the planting industry. It is difficult for people to have enough time and ability to make a strong response to extreme weather. In order to reduce losses, planting cold-tolerant varieties is an effective measure for people to deal with low temperature stress. [0003] Researchers at home and abroad have screened many indicators in order to quickly, accurat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00
CPCA01G22/00
Inventor 许英陈建华栾明宝王晓飞孙志民
Owner INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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