钙对厚皮甜瓜坐果节位叶片衰老与抗氧化酶活性的影响  

Effects of calcium on the senescence and antioxidase activities of the fruiting node leaf in muskmelon

作　　者：张利云[1] 刘海河[1,2] 张彦萍[2] 朱立保 王正[2] 

机构地区：[1]河北农业大学园艺学院,河北保定071001 [2]河北工程大学农学院,河北邯郸056038

出　　处：《河北农业大学学报》2014年第1期39-43,共5页Journal of Hebei Agricultural University

基　　金：国家西甜瓜产业技术体系建设专项资金(CARS-26-13);河北省科技支撑计划重点项目(11220801D;13226914D);邯郸市科学技术研究与发展计划项目(1222101059)资助

摘　　要：以厚皮甜瓜‘迎春(F1)’为试材;研究了叶面喷施10,20,30mmol/L的硝酸钙对厚皮甜瓜坐果节位叶片叶绿素、可溶性蛋白、丙二醛含量及抗氧化酶活性的影响。结果显示:坐果节位雌花开放后;叶面喷施20mmol/L的硝酸钙与对照相比可显著延缓坐果节位叶片叶绿素、可溶性蛋白质含量的下降,提高POD,SOD,CAT等抗氧化酶活性,降低超氧阴离子的产生速率。表明,叶面喷施20mmol/L硝酸钙可延缓厚皮甜瓜坐果节位叶片衰老,提高叶片的抗氧化酶活性,使坐果节位叶片保持较高的生理活性。The objective of the study was to research the effects of different calcium nitrate con- centrations （10,20,30 mmol/L） on the chlorophyll, soluble protein, MDA content and antioxi- dase activities of the leaf on the fruiting node in muskmelon. Msukmelon cuhivar ＇Yingchun （F1）＇ was used to carry out the experiment. The foliage dressing was conducted when the bearing-fruit flowers were opening. The results showed there were significant differences be- tween 20 mmol/L Ca（NO3）2 and CK. 20 mmol/L Ca（NO3）2 treatment delayed the decrease of the chlorophyll and soluble protein contents, increased the activities of antioxidant enzymes （POD, SOD, CAT） and decreased the MDA content and O2 - production rate of the leaf on the fruiting node compared with CK. The research indicated that 20 mmol/L Ca（NO2）2 treatments can be used to slow down the leaf senescence and increase the antioxidant activities on the fruiting node.

关 键 词：厚皮甜瓜 坐果节位叶片 叶片衰老 抗氧化酶活性 钙 

分 类 号：S652[农业科学—果树学]