盐碱胁迫对阴香幼苗不同器官离子吸收与分配的影响
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摘要
该文以盆栽阴香幼苗为试验材料,采用不同浓度NaHCO_3和Na2CO_3(1∶1)混合溶液(0mmol/L、50mmol/L、100mmol/L、200mmol/L、300mmol/L)处理,研究阴香幼苗对Fe~(2+)、Mg~(2+)、K~+、Na~+吸收、转运、利用以及对色素含量的影响。结果表明:随盐碱胁迫程度的增加,根系中K+含量呈先升后降趋势,茎、叶中K+含量呈下降趋势,其中叶片中K~+含量与根系相当,茎中K~+含量最低;各器官中Na~+含量呈上升趋势,根系中Na+含量最高,茎中最低;根系、茎中的K+/Na+呈先升后降趋势,叶片中K~+/Na~+呈下降趋势,叶片中K~+/Na~+最高,根系中最低。低盐碱胁迫(0-100mmol/L)提高根、茎、叶中Fe~(2+)含量,促进光合色素合成;而高盐碱胁迫(100~300mmol/L)降低根器官中Fe~(2+)含量,略增加茎、叶中Fe~(2+)含量,明显降低光合色素含量;盐碱胁迫对根、茎中Mg~(2+)含量影响差异不显著,但显著降低叶片中Mg~(2+)含量。阴香幼苗能耐低程度盐碱胁迫。
Taking the triennial pot of Cinnamomum burmannii hydroponics as test material,using different concentrations(0 mmol/L、50 mmol/L、100 mmol/L、200 mmol/L、300 mmol/L)of soda saline to treat Cinnamomum burmannii seedling,the assimilating and distributing of Fe2+,Mg2+,K+,Na~+and the content of photosynthetic pigment in Cinnamomum burmannii seedling are studied. The results showed that the K+content of Cinnamomum burmannii seedlingroots organs is first increased and then decreased trend,and the content of K+in the leaves and stem showed a down-ward trend with the increase of salinity-alkalinity stress degree,and the K+content in root and blade is the highest,and which in organs is the lowest;The Na~+content in root,stem and leaf showed a gradually rising trend,the Na~+con-tent of root is the highest,and which of stem organs is the lowest;The K+/Na~+of Cinnamomum burmannii seedlingroot and stem organ is a gradually increased at first and then decreased trend,and the leaf showed a gradually declin-ing trend,The K+/Na~+of blade organs is the highest,and whichof root is the lowest. The Fe2+content of stem,root andleaf organs are improved under the low salinity stress(0~100 mmol/L),the contents of photosynthetic pigment inleaves are enhanced;The Fe2+contents of root,the contents of photosynthetic pigment in leaf organs are reduced sig-nificantly under the high salinity stress(100~300 mmol/L). The effect of salinity-alkalinity stress on the assimilat-ing and distributing of Mg2 +in root and stem is not significant but significantly decreased the of Mg2 +content inleaves. Cinnamomum burmannii seedlings have the tolerance of low degree of salinity-alkalinity stress.
Taking the triennial pot of Cinnamomum burmannii hydroponics as test material,using different concentrations(0 mmol/L、50 mmol/L、100 mmol/L、200 mmol/L、300 mmol/L)of soda saline to treat Cinnamomum burmannii seedling,the assimilating and distributing of Fe2+,Mg2+,K+,Na~+and the content of photosynthetic pigment in Cinnamomum burmannii seedling are studied. The results showed that the K+content of Cinnamomum burmannii seedlingroots organs is first increased and then decreased trend,and the content of K+in the leaves and stem showed a down-ward trend with the increase of salinity-alkalinity stress degree,and the K+content in root and blade is the highest,and which in organs is the lowest;The Na~+content in root,stem and leaf showed a gradually rising trend,the Na~+con-tent of root is the highest,and which of stem organs is the lowest;The K+/Na~+of Cinnamomum burmannii seedlingroot and stem organ is a gradually increased at first and then decreased trend,and the leaf showed a gradually declin-ing trend,The K+/Na~+of blade organs is the highest,and whichof root is the lowest. The Fe2+content of stem,root andleaf organs are improved under the low salinity stress(0~100 mmol/L),the contents of photosynthetic pigment inleaves are enhanced;The Fe2+contents of root,the contents of photosynthetic pigment in leaf organs are reduced sig-nificantly under the high salinity stress(100~300 mmol/L). The effect of salinity-alkalinity stress on the assimilat-ing and distributing of Mg2 +in root and stem is not significant but significantly decreased the of Mg2 +content inleaves. Cinnamomum burmannii seedlings have the tolerance of low degree of salinity-alkalinity stress.
引文
[1]韩浩章,王晓立,刘宇,等.香樟黄化病现状分析及其治理研究[J].北方园艺,2010(13):232-235.
[2]马白菡,谢宝多.成土母质土壤(p H)对樟树黄化病的影响[J].中南林学院学报,1992,12(1):49-56.
[3]张晓磊,刘晓静,齐敏兴,等.混合盐碱对紫花苜蓿苗期根系特征的影响[J].中国生态农业学报,2013,21(3):340-346.
[4]闰永庆,王文杰,朱虹,等.混合盐碱胁迫对青山杨渗透调节物质及活性氧代谢的影响[J].应用生态学报,2009,20(9):2085-2091.
[5]金亚波,韦建玉,王军.植物铁营养研究进展Ⅰ:生理生化[J].安徽农业科学,2007,35(32):10215-10219.
[6]张丽华,工晓立,工梦秋,等.苏打盐碱胁迫对香樟幼苗光合特性的影响[J].北方园艺,2012,23(9):91-93.
[7]颜路明,郭祥泉.盐碱胁迫对香樟幼苗离子吸收与分配的影响[J].土壤,2015,47(6):1176-1180.
[8]刘秀萍.阴香抗逆性研究[D].南昌:江西农业大学,2011.
[9]邹琦.植物生理学实验指导[M].北京:中国农业出版社,2000:68-72,111-112.
[10]许惠.生理黄化香樟的叶片养分特征研究[J].安徽农学通报,2009,15(3):137-139.
[11]王宝山,赵可夫.小麦叶片中Na、K提取方法的比较[J].植物生理学通讯,1995,31(1):50-52.
[12]Horie T,Schroeder JI.Sodium transporters in plants.Diverse genes and physiological function[J].Plant Physiology,2004,136:2457-2412.
[13]李晓宇,蔺吉祥,李秀军,等.羊草苗期对盐碱胁迫的生长适应及Na+、K+代谢响应[J].草业学报,2013,22(1):201-209.
[14]Passioura JB.Root signals control leaf expansion in wheat seedlings growing in drying soil[J].Australian Journal of Plant Physiology,1988,15(5):687-693.
[15]武建林,李有文,李立平,等.植物黄化与氮磷钾营养的关系[J].西北农业学报,2004,13(1):104-108.
[2]马白菡,谢宝多.成土母质土壤(p H)对樟树黄化病的影响[J].中南林学院学报,1992,12(1):49-56.
[3]张晓磊,刘晓静,齐敏兴,等.混合盐碱对紫花苜蓿苗期根系特征的影响[J].中国生态农业学报,2013,21(3):340-346.
[4]闰永庆,王文杰,朱虹,等.混合盐碱胁迫对青山杨渗透调节物质及活性氧代谢的影响[J].应用生态学报,2009,20(9):2085-2091.
[5]金亚波,韦建玉,王军.植物铁营养研究进展Ⅰ:生理生化[J].安徽农业科学,2007,35(32):10215-10219.
[6]张丽华,工晓立,工梦秋,等.苏打盐碱胁迫对香樟幼苗光合特性的影响[J].北方园艺,2012,23(9):91-93.
[7]颜路明,郭祥泉.盐碱胁迫对香樟幼苗离子吸收与分配的影响[J].土壤,2015,47(6):1176-1180.
[8]刘秀萍.阴香抗逆性研究[D].南昌:江西农业大学,2011.
[9]邹琦.植物生理学实验指导[M].北京:中国农业出版社,2000:68-72,111-112.
[10]许惠.生理黄化香樟的叶片养分特征研究[J].安徽农学通报,2009,15(3):137-139.
[11]王宝山,赵可夫.小麦叶片中Na、K提取方法的比较[J].植物生理学通讯,1995,31(1):50-52.
[12]Horie T,Schroeder JI.Sodium transporters in plants.Diverse genes and physiological function[J].Plant Physiology,2004,136:2457-2412.
[13]李晓宇,蔺吉祥,李秀军,等.羊草苗期对盐碱胁迫的生长适应及Na+、K+代谢响应[J].草业学报,2013,22(1):201-209.
[14]Passioura JB.Root signals control leaf expansion in wheat seedlings growing in drying soil[J].Australian Journal of Plant Physiology,1988,15(5):687-693.
[15]武建林,李有文,李立平,等.植物黄化与氮磷钾营养的关系[J].西北农业学报,2004,13(1):104-108.