Method for determining salt tolerance levels of mulberry varieties

Abstract

The invention belongs to the technical field of mulberry planting and discloses a method for determining the salt tolerance levels of mulberry varieties. The method comprises the steps of carrying outmulberry variety sowing and breeding and planting of mulberry seedlings in a mobile plant LED light circulating hydroponic device; carrying out salt tolerance tests of the mulberry seedlings, namelyselecting seedlings of different mulberry varieties to plant in NaCl brine solutions of different concentrations; determining the indicators of branch heights, number of leaves, maximum leaf length, maximum leaf width, number of injured leaves and number of dead trees of different mulberry varieties at various brine concentrations; and calculating the injury levels, relative growth, injury indexesand death rates of the mulberry seedlings and obtaining the influence of NaCl stress on the growth characteristics of the seedlings of different mulberry varieties. According to the method, the seedlings of the mulberry varieties are selected to be planted in the NaCl brine solutions of different concentrations; and the indicators of different mulberry varieties at various brine concentrations are determined to obtain the influence of the NaCl stress on the growth characteristics of the seedlings of different mulberry varieties.

Description

technical field [0001] The invention belongs to the technical field of mulberry planting, in particular to a method for measuring the salt tolerance level of mulberry varieties. Background technique [0002] At present, the closest existing technology: Plants will encounter various biotic and abiotic stresses from the outside during the entire life cycle. Common abiotic stress factors include cold, high temperature, drought, barrenness, and salinity. Soil-induced salt stress is currently one of the main factors that seriously affect plant growth and yield of field commercial crops. Salt stress means that the growth of plants is affected by high osmotic potential in a high salinity environment. It reduces the absorption of nutrients and water by plants through high osmotic potential in soil solution, thereby inhibiting the growth of plants. Saline soils that produce salt stress include saline soils and alkaline soils, as well as various salinized and alkalized soils. Saline...

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Problems solved by technology

[0005] In summary, the problem in the prior art is that the effect of the prior art on measuring the salt tolerance of mulberry seeds is unsatisfactory, and it is necessary to use a new assay method for the salt tolerance of mulberry seedlings specifically for the tolerance of mulberry seedlings. determination of salinity

[0006] And the prior art is only the salt tolerance test carried out to mulberry seeds, and there is no test method for the salt tolerance of mulberry seedlings at present.

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