摘要
以沟叶结缕草(Zoysia matrella)与结缕草(Z. japonica)为材料,测定了高温胁迫下两种暖季型草坪草叶片主要抗性生理指标的变化,结果表明:40℃高温处理下,两种结缕草叶片渗透调节物质(可溶性糖、可溶性蛋白质、脯氨酸)和ABA、GA3、IAA、MDA含量均显著增加,SOD、POD与CAT酶活性都显著增强;两种结缕草叶片的Chla、Chlb、Car含量以及Chla/Chlb的比值则出现了不同程度的下降。高温下,沟叶结缕草渗透调节物质的积累量和ABA、GA3、IAA含量的增加均高于结缕草,SOD和CAT活性的增强也大于结缕草,表现出更强的耐热特性。
An experiment was conducted to determine physiological responses of Zoysia matrella and Z.japonica to high temperature stress.The results show that the contents of soluble sugar and protein,proline,ABA,GA3,IAA and MDA increase in two tested turf-grass species,along with increased SOD,POD and CAT activity under high temperature stress.High temperature stress treatment decreases chlorophyll a （Chla）,chlorophyll b （Chlb） and carotenoid （Car） content,and it concurrently induces changes in leaf Chla/Chlb ratio in the two turf-grass species.The contents of the osmotic adjustment substances,ABA,GA3 and IAA are higher in Z.matrella than in Z.japonica.The same is true for SOD and CAT activity in the two turf-grass species when exposed to high temperature treatment.Hence Z.matrella exhibits better heat resistance than Z.japonica under high temperature conditions.
出处
《中国生态农业学报》
CAS
CSCD
北大核心
2009年第5期964-967,共4页
Chinese Journal of Eco-Agriculture
基金
福建省生态学重点学科项目(0608537)资助
关键词
结缕草
高温胁迫
酶活性
内源激素
Zoysia grass
High temperature stress
Enzyme activity
Endogenous hormone
