Method for screening variety with high phosphorus utilization efficiency from multiple wheat varieties

Abstract

The invention discloses a method for screening variety with high phosphorus utilization efficiency from multiple wheat varieties, comprising the following steps: selecting wheat varieties with same size seeds, putting the wheat varieties into a culture vessel to germinate seedlings with roots, selecting seedlings with consistent growth from the seedlings to divide into two groups, irrigating the seedlings with nutrient solvents with different phosphorus concentrations until the wheat is mature; detecting and calculating the relative plant height, the relative grain number and the relative thousand seed weight of each variety; comprehensively comparing to select several wheat varieties with the highest three indices in general to serve as varieties with the high phosphorus utilization efficiency; germinating the varieties with the high phosphorus utilization efficiency until secondary screened seedlings are rooted, selecting the secondary screened seedlings with consistent growth to divide into two groups, performing hydroponics with nutrient solvents with different phosphorus concentrations, detecting and calculating the relative weight of dry matter, the relative phosphorus content and the relative chlorophyll content of each variety; comprehensively comparing to select a wheat variety with the highest three indices in general to serve as the variety with the relatively highest phosphorus utilization efficiency. The wheat variety screened at the end by the method provided by the invention provides materials for further improving existing varieties and studying the biological property and the physiology and biochemistry mechanism of the existing varieties.

Description

technical field [0001] The invention belongs to the technical field of wheat cultivation and breeding, and in particular relates to a method for screening high-efficiency phosphorus utilization varieties from a plurality of wheat varieties. Background technique [0002] Wheat is a gramineous plant widely planted all over the world. It originated in the Fertile Crescent region of the Middle East. It is one of the earliest cultivated crops in the world. Wheat is rich in starch and protein. It can be ground into flour to make bread, steamed bread, Biscuits, noodles and other foods; after fermentation, it can be made into beer, alcohol, vodka, or biofuel. Wheat is one of the three major grains, and almost all of its production is used for food, and only about one-sixth is used as feed. In 2010, wheat was the food crop with the second largest production in the world (651 million tons), second only to corn (844 million tons). Wheat is also one of the main plants in my country, m...

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 wheat will not only waste resources, but also bring many environmental problems.

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