不同根部处理剂对2种楠属植物裸根苗移栽成活率和生理特性的影响  

Effects of Different Root Treatment Agents on the Survival Rate and Physiological Characteristics of Two Species of Bare-Root Transplanted Phoebe Seedlings

作　　者：王启剑 朱司甲 胡胜科 费永俊 WANG Qijian;ZHU Sijia;HU Shengke;FEI Yongjun(Center of Phoebe Germsplasm Resources Evaluation and Inovation,Yangtze University,Jingzhou,Hubei 434025,China;College of Tourism&Landscape Architecture,Guilin University of Technology,Guilin,Guangxi 541006,China)

机构地区：[1]长江大学园艺园林学院/楠木种质资源评价与创新中心,湖北荆州434025 [2]桂林理工大学旅游与风景园林学院,广西桂林541006

出　　处：《江西农业大学学报》2021年第4期817-824,共8页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家自然科学基金项目(31270740);湖北省自然科学基金项目(2014CFB264、2017CFB390);湖北省科技支撑计划项目(2013BBB24);湖北省教育厅重点项目(2010Z1206);湖北省教育厅指导性项目(B2015444)。

摘　　要：[目的]为提高楠木(Phoebe and Machilus)裸根苗移栽成活率,促进楠木资源在全国推广种植。[方法]选用保水剂、粘合剂和生根粉3种处理剂组成两种不同配方,将供试植物幼苗根部放入已配置好的处理剂中浸泡并用塑料薄膜包裹其根部后移栽,分析不同配方的处理剂对2种供试植物--桢楠(试验组ZN1和ZN2,对照组CK1)和浙江楠(试验组ZJN1和ZJN2,对照组CK2)裸根苗移栽成活率和生理特性的影响。[结果]桢楠裸根苗移栽成活率均明显高于浙江楠,前者分别为86%(ZN1)、84%(ZN2)和79%C(K1),后者分别为73%(ZJN1)、69%(ZJN2)和61%(CK2)。ZN1组和ZJN1组的叶片叶绿素含量最高,分别为2.21 mg/g和2.18 mg/g;对照组CK1和CK2最低,分别为1.53 mg/g和1.32 mg/g;叶绿素a/b值和叶绿素含量变化趋势基本一致。ZN1与ZN2组相比和ZJN1与ZJN2组相比,叶片可溶性糖含量分别降低10.80%和19.71%,可溶性蛋白含量分别降低10.55%和8.37%。处理剂对2种楠属植物的叶片SOD活性的影响不明显(P>0.05),但显著降低2种楠属植物裸根苗移栽后的叶片POD活性(P<0.05),使2种楠属植物裸根移栽后的叶片POD值恢复到正常水平。试验结果表明,加入生根粉处理的ZN1和ZJN1和其他组相比可以提高裸根苗移栽的成活率、叶片叶绿素含量和叶绿素a/b值,使得处理后的桢楠和浙江楠的可溶性糖和POD值显著降低,回归正常水平,但对叶片可溶性蛋白和SOD的影响不明显。[结论]试验中,桢楠裸根苗移栽后的成活率均高于浙江楠,同时施加保水剂20 g/L、粘合剂10 g/L、生根粉1 g/L和泥浆水2:1的处理下效果最佳,对2种楠属植物裸根移栽苗移植后生理状态的恢复有显著的促进作用。[Objective]To improve the survival rate of bare-root transplanted Phoebe and Machilus plants and promote the planting and popularization of Phoebe and Machilus resources in the country.[Methods]Three different treatment agents,namely,super-absorbent polymer,adhesive and rooting agent,were used to soak the roots of the seedlings in the prepared treatment agent,and then the roots of the seedlings were covered with plastic film and then were transplanted in nursery.The effects of the treatment agents with different formulas on the survival rates and physiological characteristics of the bare-root transplanted seedlings of Phoebe Zhennan S.Lee(treatment group ZN1 and ZN2,control group CK1)and Phoebe chekiangensis C.B.Shang(treatment group ZJN1 and ZJN2,control group CK2)were evaluated comprehensively.[Results]The survival rate of P.zhennan was significantly higher than that of P.chekiangensis,which were 86%(ZN1),84%(ZN2),79%(CK1)and 73%(ZJN2),69%(ZJN2),61%(CK2),respectively.The highest leaf chlorophyll contents of the two bare-root Phoebe transplanted seedlings were those of group ZN1 and ZJN2 with 2.13 mg/g and 1.68 mg/g,respectively,and the lowest was control groups CK1 and CK2,which were 1.53 mg/gand 1.32 mg/g,respectively.Compared with those of ZN2 and ZJN2 groups,the contents of soluble sugar of ZN1 and ZJN1 groups decreased by 10.80% and 19.71%,respectively,while the contents of soluble protein of ZN1 and ZJN1 groups decreased by 10.55% and 8.37% respectively.The activities of SOD in the leaves of the two species of Phoebe did not reduced significantly(P>0.05),while the activities of POD reduced significantly(P<0.05),which made the POD value of the leaves of the two Phoebe species recover to the normal level.Compared to other groups,the rooting agent could increase the survival rate,leaf chlorophyll content and chlorophyll a/b value of bare-root transplanted seedlings of ZN1 and ZJN1.The contents of soluble sugar and POD value of the plants treated with rooting agent reduced significantly,and returned to the nor

关 键 词：楠属植物 保水剂 生根粉 裸根移栽 成活率 生理特性 

分 类 号：S792.24[农业科学—林木遗传育种]