Ca(NO3)2胁迫对黄花菜植株体内矿质离子含量的影响  

Effects of Ca(NO 3)2 stress on contents of mineral ions in daylily plants

作　　者：韩志平 张海霞 张红利 李侠 HAN Zhiping;ZHANG Haixia;ZHANG Hongli;LI Xia(School of Life Science,Protected Agricultural Technology Development Center,Datong,Shanxi 037009,China;Department of Rear-service,Shanxi Datong University,Datong,Shanxi 037009,China)

机构地区：[1]山西大同大学生命科学学院/设施农业技术研发中心,山西大同037009 [2]山西大同大学后勤管理处,山西大同037009

出　　处：《西北农林科技大学学报（自然科学版）》2020年第4期115-122,共8页Journal of Northwest A&F University(Natural Science Edition)

基　　金：山西省农业科技攻关项目(20150311010-1);大同市农业科技攻关项目(201468-2)。

摘　　要：【目的】分析盐胁迫下黄花菜体内矿质离子含量的变化,为在盐碱地推广种植黄花菜以及利用黄花菜改良盐碱地提供参考。【方法】以山西大同黄花菜为材料,采用营养液水培法,以正常营养液培养为对照,研究不同浓度Ca(NO 3)2(50,100,150,200,250 mmol/L)胁迫对黄花菜生物量及植株体内矿质离子含量的影响,探讨黄花菜可能的耐盐机制。【结果】随Ca(NO 3)2胁迫浓度的提高,黄花菜植株生物量显著降低,根系和叶片Ca 2+、Na+、Fe 2+、Zn 2+及Cl-含量均呈“升高-降低”的变化规律,Mg 2+含量逐渐降低,Cu 2+含量无明显变化规律,NO-3含量逐渐增加。除Mg 2+含量叶片高于根系、Cl-含量随Ca(NO 3)2胁迫浓度的提高出现“根叶相当-根低于叶-根高于叶”的变化外,各处理其他矿质离子含量均表现为根系高于叶片。【结论】可在中度(70~150 mmol/L单价盐)以下盐碱地种植黄花菜,扩大其生产规模;通过每年割除地上部逐渐改良盐碱地,使其成为宜耕良田。【Objective】This study analyzed the changes of mineral ions in daylily plants to provide reference for extension of daylily cultivition in saline-alkaline land and improvement of saline-alkali land by planting daylily.【Method】Datong daylily was cultured in Ca(NO 3)2 solution at different concentrations(50,100,150,200 and 250 mmol/L)with normal nutrient solution culture as control.The effect of on biomass and contents of mineral ions in daylily plants was studied and the possible mechanism of salt-tolerance of daylily was analyzed.【Result】With the increase of Ca(NO 3)2 concentration,biomass of daylily plant decreased significantly and contents of Ca 2+,Na+,Fe 2+,Zn 2+and Cl-in roots and leaves showed the trend of increasing before decreasing.The content of Mg 2+gradually decreased,the content of Cu 2+had no significant change,while the content of NO-3 gradually increased.With the increase of Ca(NO 3)2 concentration,the content of Mg 2+in leaves was higher than that in roots,while the content of Cl-in roots showed the trend of“same-lower-higher”in comparison with that in leaves.The contents of other mineral ions in roots were higher than those in leaves.【Conclusion】Planting daylily in salt-alkaline land and expanding the cultivation scale is feasible.The salt-alkaline soil could be improved to suitable farmland by cutting out the aerial part of daylily every year.

关 键 词：黄花菜 盐胁迫 矿质离子 耐盐机制 

分 类 号：S644.301[农业科学—蔬菜学]