热激处理下不同番茄砧木对茄子嫁接苗生长及生理特性的影响  

Effects of Different Tomato Rootstocks on Growth and Physiological Characteristics of Eggplant Grafted Seedlings under Heat Shock Treatment

作　　者：秦涛[1] 刘新社[1] QIN Tao;LIU Xinshe(Shangqiu Vocational and Technical College,Shangqiu 476100,China)

机构地区：[1]商丘职业技术学院,河南商丘476100

出　　处：《河南农业科学》2021年第1期129-133,共5页Journal of Henan Agricultural Sciences

基　　金：高职高专国家级示范专业基金项目;河南省科技攻关项目(182102110371)。

摘　　要：为了探究不同番茄砧木嫁接的茄子苗对高温胁迫的抗性,选用4个不同品种番茄(金棚一号、大红小果、粉果中果、小樱桃,分别为T_(1)、T_(2)、T_(3)、T_(4))为砧木对大田绿丰茄子进行嫁接,采用常温、热激处理,通过对茄子嫁接苗苗期的株高、茎粗、叶片数、株型、热害指数、超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量、叶绿素含量、电解质渗出率的测定,研究不同番茄砧木对茄子嫁接苗苗期生理及耐热性的影响。结果表明,以不同番茄品种作砧木嫁接的茄子株高、株型及叶片数与自根苗相比变化不显著;4种砧木嫁接后,茄子苗电解质渗出率、MDA含量均降低,显著低于自根苗;叶绿素含量提高,T_(1)、T_(2)、T_(3)显著高于自根苗;SOD活性升高,T_(1)、T_(3)显著高于自根苗,T_(3)增幅达53.31%;T_(3)嫁接后热害指数最低,仅21.67%。综合分析,以粉果中果番茄(T_(3))为砧木的茄子嫁接苗表现出较高的耐热性。To investigate the resistance of eggplant seedlings grafted with different tomato rootstocks to high temperature stress,four different tomato varieties(Jinpeng No.1,Dahongxiaoguo,Fenguozhongguo,Xiaoyingtao,named as T_(1),T_(2),T_(3),T_(4),respectively)were selected as rootstocks for Datianlvfeng eggplant.After normal temperature and heat shock,the effect of four different tomato stocks on physiology and heat tolerance of grafted eggplant was studied by determining the height,stem diameter,number of leaves,plant type,heat injury index,SOD activity,MDA and chlorophyll contents,electrolyte leakage rate at seedling stage.The results showed that the height,plant type and leaf number of eggplant grafted with different tomato varieties did not change significantly compared with self-root seedlings;the electrolyte leakage rate and MDA content of eggplant seedlings grafted with different tomato varieties decreased significantly compared with self-root seedlings;the chlorophyll content increased,the T_(1),T_(2),T_(3) were significantly higher than that of self-root seedlings;the SOD activity increased,the T_(1),T_(3) were significantly higher than that of self-root seedlings,the T_(3) increased by 53.31%;the heat damage index was the lowest after T_(3) grafting,only 21.67%.Comprehensive analysis showed that the grafted eggplant seedlings with Fenguozhongguo(T_(3))tomato as rootstock showed high heat resistance.

关 键 词：番茄砧木 茄子嫁接苗 热激处理 热害指数 SOD MDA 生理特性 

分 类 号：S66-3[农业科学—果树学]