硼胁迫对辣椒光合特性和生长发育的影响  

Effects of Boron Stress on Photosynthetic Characteristics and Growth of Pepper

作　　者：韩霜 崔钰杰 燕晓丹 刘卫敏 韩壮 裴冬丽 HAN Shuang;CUI Yujie;YAN Xiaodan;LIU Weimin;HAN Zhuang;PEI Dongli(Department of Biological and Food,Shangqiu Normal University/Key Laboratory of Plant-Microbe Interactions,Shangqiu,Henan 476000)

机构地区：[1]商丘师范学院生物与食品学院,植物与微生物互作重点实验室,河南商丘476000

出　　处：《北方园艺》2020年第22期37-41,共5页Northern Horticulture

基　　金：河南省科技厅科技攻关资助项目(182102110241);国家自然科学基金资助项目(31902066);河南省自然科学基金资助项目(182300410058)。

摘　　要：以常规辣椒品种V11为试材,采用盆栽方法,研究了2.5、10.0、50.0μmol·L^-13个硼水平浓度对辣椒生长、叶片硼素积累量、光合作用和叶绿体超微结构的影响,以期为辣椒的硼素管理提供参考依据。结果表明:50.0μmol·L^-1处理14 d出现叶片皱缩,叶尖黄化现象,处理21 d黄化程度加重,生长点枯死,10.0μmol·L^-1处理也出现了黄化现象;随着硼酸处理浓度的增加辣椒株体内硼累积量显著增加,50.0μmol·L^-1和10.0μmol·L^-1处理植株与2.5μmol·L^-1相比,根系和整株干质量均显著下降。硼过量使光合速率下降,叶绿体结构变形,植株生长异常,生物量下降。The conventional pepper variety V11 was used as the test material,using the potted method,the effects of 2.5,10.0,50.0μmol·L^-1 three boron levels concentrations on the growth,boron accumulation in leaves,photosynthesis and chloroplast ultrastructure of pepper were studied,in order to provide theoretical support for the boron management of pepper.The results showed that the leaves shrunk and the tip yellowing occurred after the treatment of 50.0μmol·L^-1 for 14 days,the yellowing degree was aggravated and the growth point died after the treatment of 21 days,and the yellowing phenomenon also appeared in the treatment of 10.0μmol·L^-1.With the increase of the concentration of boric acid treatment,the boron accumulation in the pepper plants increased significantly.Compared with 2.5μmol·L^-1,the root system and the whole plant dry mass of the 50.0μmol·L^-1 and 10.0μmol·L^-1 plants significantly declined.Excessive boron leads to a decrease in photosynthetic rate,deformation of chloroplast structure,abnormal plant growth,and decreased biomass.

关 键 词：辣椒 硼含量 叶绿体超微结构 

分 类 号：S641.3[农业科学—蔬菜学]