Method for screening drought resistance type peanuts

Abstract

The invention relates to screening of peanut varieties, and in particular relates to a method for efficiently screening drought resistance type peanuts. The method comprises the following steps: 1) plowing and fertilizing soil in a rainproof cultivation pool; 2) selecting a to-be-tested peanut variety or strain with full grain and uniform size, and sowing the to-be-tested peanut variety or strain in the cultivation pool of the step 1), observing and recording the emergence condition and the growth condition every day; 3) performing drought stress treatment, setting the water content of the contrast treated soil as 75%-80% of the field capacity and setting the water content of the drought stress treated soil as 60%-65% of the field capacity; 4) harvesting the plants after the stress is ended, and determining the relative water content and the phenol content of the leaves; 5) screening the peanut variety or strain with the relative water content of the leaves which is reduced by less than 30% and the phenol content in the leaves which is increased by more than 25% compared with the contrast leaves. According to the invention, the change characteristics of the phenol content in different drought-resistant type peanut leaves under the water stress can be accurately measured, so that the drought-resistant type peanut variety can be identified, the measuring method is simple and convenient to operate and accurate and reliable in result.

Description

technical field [0001] The invention relates to screening of peanut varieties, in particular to a method for efficiently screening and selecting drought-resistant peanuts. Background technique [0002] Peanut is an important oil crop and economic crop. Peanut oil is one of the main sources of vegetable oil. Peanut plays an important role in my country's agricultural development and export earnings. In recent years, the consumption of edible vegetable oil in my country has increased by more than 10% every year, and the contradiction between supply and demand is intensifying. With the gradual expansion of the planting area of ​​food crops, the contradiction between oil crops and food crops competing for land has become increasingly prominent. my country's peanut production areas are mainly distributed in arid and semi-arid areas, ancient river courses, hilly slopes and other areas. Drought has become one of the most widely distributed and most harmful limiting factors in my ...

AI Technical Summary

Problems solved by technology

The synthesis and content of phenolic substances can be an effective indicator of drought stress resistance, but there is no report on the application of such screening methods in peanuts

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