Method for identifying drought resistance of corns

Abstract

The invention discloses a method for identifying drought resistance of corns. The method for identifying drought resistance of corns is to alternatively plant the corns in a water area and an arid area, namely a film water area (2 rows) and a film arid area (2 rows), the same material is planted in adjacent water and arid areas, and the method belongs to the technical field of corn planting. The method comprises the following steps of (1) sowing the corn seeds to be tested; (2) finally singling the corn plants to be tested; (3) conducting drought stress and normal water treatment on the corn plants to be tested; (4) conducting morphological index detection on the corns to be tested; (5) conducting yield index detection on the corns to be tested; (6) evaluating the drought resistance of the corns to be tested. A method for identifying drought resistance of corns in adult stage is established, adult corn plants are taken as detecting objects in the method, drought stress treatment is conducted on the corn from jointing stage to mature stage, through the detection of the plant morphological index and yield index, the purpose of establishing a subjective and accurate method for identifying and evaluating the drought resistance of the corns is achieved, and therefore a reliable basis for the identification of drought resistance of corns is provided.

Description

technical field [0001] The invention belongs to the field of crop genetics and breeding, and in particular relates to a method for identifying drought resistance of corn. [0002] Background technique: [0003] Drought and water shortage has become a serious problem faced by the world's agricultural production, and it is also an important factor restricting the development of my country's agriculture. Droughts caused by insufficient precipitation or changes in precipitation patterns have caused huge losses in agricultural production in our country. Statistics show that from 1950 to the present, the average annual drought-affected area in the country has reached 22 million hectares, and more than 10 billion kilograms of grain has been directly reduced due to drought, accounting for about 60% of the grain loss caused by various natural disasters. [0004] Corn is the largest food crop in my country, with a planting area of ​​more than 37 million hectares, 2 / 3 of which are dist...

AI Technical Summary

Problems solved by technology

At present, there are few research reports on the screening and identification methods of maize drought resistance at home and abroad. The specific methods used mainly include indoor germination identification method, pot plant identification method, etc. Most of the indicators used are physiological indicators, but the impact of drought on maize Hazards involve all stages of corn growth and development, and are ultimately manifested by yield decline. The pros and cons of various indicators in the identification method should be based on yield

At present, there is no ideal method for identifying and screening the drought resistance of maize

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