Method for identifying and evaluating cold resistance of ramie germplasm resources

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...

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.

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