摘要
为研究不同莲藕资源的耐盐性,以莲藕E1、E2、E3、E4、H2、H5和H8为材料,用0.6%NaCl处理种藕,测定7种不同莲藕资源的盐害指数、叶绿素含量、质膜相对透性、根系活力、丙二醛含量、SOD和POD含量等系列指标并对耐盐能力进行综合评价。结果显示:采用NaCl处理后,H5盐害指数最低;E1叶绿素含量最低,E2、E4、H5和H8叶绿素含量较高,耐盐性相对较强;H2和E3质膜相对透性差异不显著,但显著高于其他莲藕资源;H5的根系活力最高,其次为H8,E3根系活力最低;E4的MDA含量最高,并且显著高于其他莲藕资源,H5的MDA含量最低;莲藕资源叶片中SOD和POD含量差异显著,E3、E1的POD含量较低,差异不显著,H5的POD含量最高,H8的POD含量其次,二者之间差异不显著;H5、E2、E1和H2的SOD含量高于其他莲藕资源,H5的SOD含量最高,E4的SOD含量最低。7份莲藕资源耐盐能力差异明显,顺序依次是:H5>H8>E2>E4(E1)>E3>H2。H5、H8品种耐盐能力相对较强,E1、E2和E4品种耐盐性相对中等,E3和H2品种耐盐性相对较弱。
For the study of the salt tolerance of different lotus root resources(E1, E2, E3, E4, H2, H5 and H8) dealt with 0.6%NaCl, a range of indicators which contained salt injury index, chlorophyll content,plasma membrane relative permeability, root activity and content of MDA, SOD and POD were determinated and the salt tolerance ability was evaluated comprehensively. The results showed that the salt injury index of H5 was the lowest. The chlorophyll content of E1 was the lowest and E2, E4, H5 and H8 were higher,whose salt tolerance were relatively strong. The plasma membrane relative permeability of H2 and E3 were not significantly different but significantly higher than other lotus root resources. The root activity of H5 was the highest, followed by H8, and root activity of E3 was the lowest. MDA content of E4 was the highest and was significantly higher than that of other lotus root resources and MDA content of H5 was the lowest. POD and SOD content of lotus root resources were significantly different. The POD content of E3 and E1 was lower while the POD content of H5 was the highest, followed by H8 with no significant difference. The SOD content of H5, E2, E1 and H2 was higher than that of other lotus root resources and that of H5 and E4 was the highest and the lowest separately. The salt tolerances of seven lotus roots were significantly different,and the descending order of that was H5, H8, E2, E4(E1), E3 and H2. The salt tolerances of H5 and H8 were relatively strong, those of E1, E2 and E4 were relatively moderate, and those of E3 and H2 were relatively weak.
作者
周志疆
张桢
蒋润枝
惠林冲
程立宝
ZHOU Zhijiang;ZHANG Zhen;JIANG Runzhi;HUI Linchong;CHENG Libao(Jiangsu Harvest Land Development Co.,Ltd.,Yancheng 224000,China;Yangzhou University,Yangzhou 225000,China)
出处
《蔬菜》
2019年第3期8-17,共10页
Vegetables
基金
江苏省自然科学基金项目(BK20151307)
关键词
莲藕
耐盐性
叶绿素
根系活力
lotus root
salt tolerance
chlorophyll
root activity
