Effects of Chitosan Oligosaccharide on Chlorophyll Content, Water Content and Protective Enzyme Activities of Maize under Drought Stress
SUN Jun-yan
DONG Li-ping
WANG Fu-juan
Abstract：In the paper,the effects of chitosan oligosaccharide on the chlorophyll content,water content and protective enzyme(SOD,POD and CAT)activities of maize were studied in drought condition.The results showed that,under drought stress,the chlorophyll content of maize leaves in both chitosan oligosaccharide treatment and CK (spraying water ) presented the trend of increase firstly and decrease afterward.The chlorophyll content in chitosan oligosaccharide treatment was 30.7 mg/g after 7 d of water stress and reached to 32.4 mg/g after 15 d of water stress,while it was 27.4 mg/g and 21.4 mg/g respectively for CK.The relative water content of maize leaves for both chitosan oligosaccharide treatment and CK showed a decrease trend,but it was 1 6.2% higher in chitosan oligosaccharide treatment than that in CK at 1 5 d after water stress.The maize leaves began to wilt for CK after 1 5 d of water stress,but it grew normally for chitosan oligosaccharide treatment.The result suggested that the external application of chitosan oligosaccharide played a role in slowing down the decrease of SOD,POD and CAT activities,and enhance the ability of drought resistance of maize.
Keywords：maizechitosan oligosaccharidedrought stresschlorophyllrelative water contentenzyme
Publication Date：2014-09-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 38-40,45 )