Method for detecting whether after-drought re-watering compensatory growth of corn in seedling stage happens or not

Abstract

The invention relates to a method for detecting whether after-drought re-watering compensatory growth of corn in the seedling stage happens or not. The method includes the following steps that firstly, corn seedlings are obtained to be divided into a test group a and a comparison group b at random; secondly, after-drought re-watering treatment is carried out on the test group a, sufficient water is supplied to the comparison set b all the time, and content of ribosylzeatin in leaves of the corn seedlings of the test group a and the comparison group b is detected periodically; thirdly, by comparing the content of the ribosylzeatin in the leaves of the corn seedlings of the test group a and the content of the ribosylzeatin in the leaves of the corn seedlings of the comparison group b, whether after-drought re-watering compensatory growth of the corn in the seedling stage happens or not is determined. The method can effectively detect whether after-drought re-watering compensatory growth of the corn in the seedling stage happens or not, and plays an important role in reducing the number of water supply times of the corn in the seedling stage, utilizing water in a concentrated mode and saving water. According to the method, materials obtained for detection are few, consumed time is short, and results are accurate. The measurement method is simple, easy to operate, convenient to use widely and high in practicality. Devices required in the method are simple, cost is low, and economic benefits are improved.

Description

technical field [0001] The invention relates to a determination method, in particular to a method for detecting whether the compensatory growth of maize at the seedling stage after rehydration occurs. Background technique [0002] Corn is the third largest crop in the world and in China, and it is also a water-intensive crop. However, water shortage is a key factor restricting the increase of maize yield in the northern part of our country. April to June is the seedling stage of corn growth in northern my country, but the limited rainfall and uneven distribution of rainfall during this period have caused serious water shortages for the growth of corn seedlings. Good growth at the seedling stage is the basis for the formation of maize yield, so it is very important to effectively improve the water use efficiency of maize seedling stage to increase the maize yield in these areas. [0003] In order to adapt to the drought environment, the growth of plants decreases under wate...

AI Technical Summary

Problems solved by technology

Finding an effective method to detect the compensatory growth of maize seedlings after rehydration after drought is of great significance for the study of crop water conservation, but there have been no reports on specific measurement methods in this regard so far