涝渍胁迫下白桦叶和茎中可溶性糖和淀粉含量相关性研究  

Correlation of contents of soluble sugar and starch in leaves and stems of white birch under waterlogging and flooding stresses

作　　者：孟昱[1] 路斌[1] 张钢[2] MENG Yu;LU Bin;ZHANG Gang(College of Landscape and Travel,Hebei Agricultural University,Baoding 071001,China;College of Horticulture,Hebei Agricultural University,Baoding 071001,China)

机构地区：[1]河北农业大学园林与旅游学院,河北保定071001 [2]河北农业大学园艺学院,河北保定071001

出　　处：《林业与生态科学》2018年第1期50-55,共6页Forestry and Ecological Sciences

基　　金：河北省教育厅青年基金(QN2015170)

摘　　要：为了解涝渍胁迫下白桦体内可溶性糖和淀粉含量的变化,以2a生白桦实生苗为材料,研究了涝渍胁迫对白桦叶片和茎中可溶性糖和淀粉含量的影响及其之间的相关性。结果表明:在渍水处理条件下,叶片中可溶性糖和淀粉含量呈上升趋势,处理到第60天,可溶性糖和淀粉含量显著高于对照,分别比对照升高了27.1%和41.6%;在淹水处理条件下,叶片中可溶性糖和淀粉含量呈先升高后下降趋势,处理到第60天,淀粉含量显著高于对照,比对照升高了34.1%,而可溶性糖含量与对照差异不显著。在渍水处理条件下,茎中可溶性糖含量呈升高趋势,而淀粉含量呈先下降后升高趋势,处理到第60天,可溶性糖和淀粉含量都与对照差异不显著;在淹水处理条件下,茎中可溶性糖和淀粉含量都呈先上升后下降趋势,处理到第60天,可溶性糖含量显著低于对照,比对照降低了19.5%,而淀粉含量与对照差异不显著。在涝渍胁迫下,叶和茎中可溶性糖含量与淀粉含量均呈显著的正相关,其相关系数分别为0.790和0.623,并且叶片可溶性糖含量与茎中可溶性糖含量也呈显著的正相关,相关系数为0.674。以上结果表明,糖和淀粉的存储和消耗对提高白桦耐涝能力有着积极的生理作用。To investigate changes of soluble sugar and starch contents in white birch(Betula platyphylla Suk.)under waterlogging and flooding stresses,the effect and correlation of soluble sugar and starch contents in leaves and stems of two-year-old white birch seedlings under waterlogging and flooding stresses were studied.The results indicated that:Under waterlogging treatment,the contents of soluble sugar and starch in leaves rose,and on day 60 after treatment,the contents of soluble sugar and starch in waterlogging treatment were significantly higher than that in control with increase of 27.1%and 41.6%,respectively.Under flooding treatment,the contents of soluble sugar and starch in leaves changed with a trend of rising first and then falling.On day 60 after treatment,the content of starch in flooding treatment was 34.1%significantly higher than that in control.However,the content of soluble sugar did not differ significantly between flooding treatment and control.The content of starch in stems decreased first and then increased,while the content of soluble sugar was rising under waterlogging treatment.On day 60 after treatment,the contents of soluble sugar and starch were not significantly different between waterlogging treatment and control.The contents of soluble sugar and starch in stems were changed with a trend of rising first and then falling under flooding treatment.On day 60 after treatment,the content of soluble sugar in flooding treatment was 19.5%lower than that in control.However,the content of starch did not differ significantly between flooding treatment and control.The content of soluble sugar was significantly and positively correlated with the contents of starch in leaves and stems under waterlogging and flooding stresses,and the correlation coefficients were 0.790 and 0.623,respectively.And there was a significantly positive correlation between the contents of soluble sugar in leaves and stems,and the correlation coefficient was 0.674.It showed that storage and consumption of soluble sugar and starch

关 键 词：白桦 涝渍 胁迫 可溶性糖 淀粉 

分 类 号：S792.153[农业科学—林木遗传育种] Q946.3[农业科学—林学]