Effects of Sulfur Levels on Photosynthetic Characteristics of Maize Seedling Leaves under Different Water Conditions
Sun Xudong
Zhang Hui
Xue Yanfang
Wen Liyu
Li Zongxin
Liu Kaichang
Abstract：In order to explore the influences of sulfur levels on photosynthetic characteristics of maize seedling leaves under different water conditions,four sulfur treatments with different sulfur concentrations in Hoagland nutrient solution and water treatments with control and 30% PEG -6000 simulated drought were de-signed using Nongda 108 as tested maize variety.The sulfur and water treatments were conducted from the third leaf stage of corn,and then we measured the chlorophyll content,net photosynthetic rate and chlorophyll fluorescence dynamic change within 8 days.The results showed that sulfur fertilizer could significantly increase the chlorophyll content,remarkably increase the net photosynthetic rate by non -stomatal factors,and improve the activity of photosystem Ⅱ reaction center.Drought could significantly reduce the chlorophyll content,de-crease the photosynthetic capacity,and cause damage to PSⅡreaction center.However,the increase of sulfur concentration could effectively alleviate the damage caused by drought to maize seedling leaves,and 4 mmol /L sulfur had the best effects.
Keywords：SulfurMaize seedlingPhotosynthetic capacityDrought stress
Publication Date：2016-10-31
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 29-33 )