Method for screening phosphorus high efficiency utilizing variety from multiple barley varieties

Abstract

Provided is a method for screening a phosphorous high efficiency utilizing variety from multiple barley varieties. The method comprises the steps of selecting barley varieties with the same sizes of grains, putting the varieties into a culture dish, and germinating the varieties into seedlings with roots; selecting seedlings of which growth is consistent from the seedlings, dividing the seedling of which growth is consistent into two groups, and using a nutrient solution with different phosphorus concentration to pour on the seedlings until the barley is mature; measuring and calculating the relative plant height, the relative kernels per spike and the relative thousand seed weight of each variety, conducting comprehensive comparison, and selecting several barley varieties of which the three indexes are comprehensively the highest as phosphorus high efficiency utilizing varieties; germinating the barley varieties into after-screening seedlings with roots, selecting the after-screening seedlings of which the growth is consistent, dividing the after-screening seedlings into two groups, using the nutrient solution with different phosphorus concentration to conduct water planting, and measuring and calculating the relative dry matter weight, the relative phosphorus content and the relative chlorophyll content of each variety; comprehensively comparing, and selecting one barley variety of which the three indexes are comprehensively the highest as the variety of which the phosphorus utilizing efficiency is relatively the highest. According to the method for screening the phosphorous high efficiency utilizing variety from multiple barley varieties, the finally screened barley variety provides materials for further improving an existing variety and studying the biological characteristics of the existing variety and a physiology and biochemistry mechanism.

Description

technical field [0001] The invention belongs to the technical field of barley cultivation and breeding, and relates to a method for screening high-efficiency phosphorus utilization varieties from a plurality of barley varieties. Background technique [0002] Barley is one of the oldest crops in the world. It has been cultivated for thousands of years and is one of the food crops with the largest planting area. The sown area of ​​barley in the world was about 96 million hectares (246 million) in the late 1970s, with an annual output of nearly 180 million metric tons. Its sown area and total output are second only to wheat, rice, and corn, ranking fourth among cereal crops and mainly used as feed , food, beer industry and pharmaceutical industry raw materials and health food. Barley is also one of the main plants in my country. The distribution of barley in my country is the most extensive among cultivated crops, but the main production areas are relatively concentrated, main...

AI Technical Summary

Problems solved by technology

However, phosphate fertilizer is a non-renewable resource. Increasing the application amount of phosphate fertilizer in order to increase the yield in the production process of barley will not only waste resources, but also bring many environmental problems.

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