A method and system for identifying moisture-tolerant barley varieties

Abstract

The invention provides a method for identifying a moisture-resistant barley variety and a moisture damage treatment system for the method. The identifying method comprises the following steps: 1) accelerating germination of barley seeds with a filter paper method; 2) transplanting the seedlings with consistent growth vigour and obtained in the step 1) to a cultivation cabinet filled with equivalent organic medium; 3) dividing the planted seedlings into a control group and a treatment group, and performing moisture damage treatment on the seedlings in the treatment group at different growth stages; 4) then selecting single barley root systems, and taking phenotypic characteristics of adventitious roots and / or the area of ventilating tissues generated in the adventitious roots as important indexes for identifying the barley moisture resistance. The identifying method based on the adventitious root system characteristics, provided by the invention, has the advantages of being simple in phenotype, accurate in result and easy to screen and distinguish; the moisture damage treatment system for the method is simple to install, flexible to assemble, capable of utilizing the organic medium circularly, free of nutrient loss, and capable of reducing experiment error.

Description

technical field [0001] The invention belongs to the field of agricultural technology, and in particular relates to a stress resistance identification and screening method of crop germplasm resources and a suitable wet damage treatment system. Background technique [0002] Wet damage refers to the harm to the normal growth and development of crops when the soil moisture reaches saturation. It occurs widely in the world, especially in North America, Australia, China, India and other countries. Barley is one of the most important and oldest cultivated crops in the world. Its sown area and total output are second only to corn, wheat, and rice, ranking fourth among cereal crops. Wet damage is one of the important adversity factors affecting the growth and development of barley, especially in the middle and lower reaches of the Yangtze River in my country. It occurs during the whole growth period of wheat crops, and different periods have different effects on the final yield and ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and corresponding system for accurately identifying moisture-resistant varieties by using the difference of new adventitious root systems, so as to overcome the instability of crop physiological index determination in traditional identification methods, and overcome the difficulties in field experiments and pot experiments. It is difficult to maintain a uniform environment, and the root system that is most sensitive to moisture damage is difficult to obtain in its entirety.

Images