不同供钾水平对金盏花幼苗生长特性和酶活性的影响  

Effects of Different Potassium Application Rates on Growth Characteristics and Enzymatic Activity of Calendula officinalis Seedlings

作　　者：赵永平[1] 朱亚[1] 闫敏飞 钟娇娇 苏丽[1] 

机构地区：[1]商洛学院生物医药与食品工程学院,陕西商洛726000

出　　处：《江西农业学报》2017年第1期39-42,共4页Acta Agriculturae Jiangxi

基　　金：国家级大学生创新创业训练项目(201511396711);商洛学院引进人才专项科研启动经费项目(14SKY027)

摘　　要：通过盆栽试验,研究了不同供钾水平对不同品种金盏花幼苗生长特性和酶活性的影响。结果表明:不同品种金盏花的株高、茎鲜重、茎干重、叶鲜重、叶干重均随着施钾量的增加呈先升高后降低的趋势,在150 kg/hm2K处理下均较高;保护酶POD、CAT的活性均随着施钾量的增加呈先上升后下降的趋势,SOD的活性则呈先下降后上升的趋势;MDA的含量随钾素浓度的增加而减少,可溶性蛋白含量、脯氨酸含量随钾素浓度的增加而呈上升趋势。The effects of different potassium application rates on the growth characteristics and enzymatic activity of seedlings of different Calendula officinalis varieties were studied through pot tests. The results showed that： when the application rate of potassium increased, the plant height, stem fresh weight, stem dry weight, leaf fresh weight, and leaf dry weight of different calendula varieties all increased first and then decreased, and they were relatively high in the treatment of 150 kg/hm2 potassium supply ; along with the increase in the application rate of potassium, the activity of POD and CAT revealed the trend of rising first and then declining, while the activity of SOD reduced first and then increased; the MDA content decreased, and the contents of soluble protein and proline increased with the increase in the application rate of potassium.

关 键 词：金盏花 供钾水平 生长特性 酶活性 

分 类 号：S681.7[农业科学—观赏园艺]