湖南农业科学Issue(7)：5-10,6.DOI:10.16498/j.cnki.hnnykx.2025.007.002
干旱胁迫下氯化镧对水稻生理特性的影响
Effect of Lanthanum Chloride on the Physiological Characteristics of Rice Under Drought Stress
摘要
Abstract
To explore the regulatory mechanism of lanthanum chloride on the physiological characteristics of rice,different concentrations of lanthanum chloride solution(0,20,100,and 200 mg/L)were exogenously sprayed at the booting and heading stages of rice.The changes in SOD,POD,and CAT activities,as well as MDA content and soluble protein content in rice leaves were measured under two different irrigation methods:water-deficit irrigation(A)and conventional irrigation(B,control).The results showed that spraying lanthanum chloride could enhance antioxidant enzymes activities and osmoregulatory substance content in rice leaves in different growth stages and under different irrigation methods,which was more obvious under drought stress at the booting stage.Specifically,under water-deficit irrigation conditions,spraying 20 mg/L lanthanum chloride significantly increased SOD,POD,and CAT activities as well as soluble protein content in rice leaves;on day 9 of the booting stage,SOD activity increased by 45.7%,compared with the control;on day 7 of the booting and heading stages,POD activity increased by 38.7%and 25.1%,respectively,compared with the control;on day 5 of the booting stage,CAT activity increased by 65.9%,compared with the control;on day 5 and 7 of the booting stage,soluble protein content increased by 37.2%and 32.3%,respectively,compared with the control.Overall,spraying 20 mg/L lanthanum chloride could significantly increase antioxidant enzymes activities and osmoregulatory substance content in rice leaves at the booting stage under drought stress conditions.关键词
水稻/缺水灌溉/氯化镧/抗氧化酶活性/丙二醛含量/可溶性蛋白含量Key words
rice/water-deficit irrigation/lanthanum chloride/antioxidant enzymes activities/MDA content/soluble protein content分类
农业科技引用本文复制引用
陈嘉玲,杨鑫,杨鹰,曾琴,邹科,张毅明,刘文祥,王悦..干旱胁迫下氯化镧对水稻生理特性的影响[J].湖南农业科学,2025,(7):5-10,6.基金项目
国家重点研发计划(2023YFD2301404) （2023YFD2301404）
中国烟草总公司湖南省公司科技重点项目(HN2023KJ03) （HN2023KJ03）
