牛血清白蛋白对连香树扦插繁殖的影响  

Effects of Bovine Serum Albumin on Propagation of Cercidiphyllum japonicum Cutting

作　　者：黄绍辉[1] 刘艳[1] 

机构地区：[1]徐州工程学院环境工程学院,江苏徐州221008

出　　处：《湖北农业科学》2015年第23期5922-5925,共4页Hubei Agricultural Sciences

基　　金：江苏省高校自然科学基金(12KJD180006);徐州市科技计划项目(XZZD1318)

摘　　要：为探讨牛血清白蛋白(BSA)与植物扦插苗根系发育的关系,以濒危植物连香树(Cercidiphyllum japonicum)为试验材料,研究不同浓度外源BSA对连香树扦插苗的生理和形态响应。结果表明,BSA浓度低于7.58μmol/L时,与对照相比,提高了扦插苗的生根率、显著增加侧根数和平均根长,使植物内源赤霉素(GA)、脱落酸(ABA)、玉米素(ZR)和生长素(IAA)含量的变化向有利于根系形成和生长的方向变化,对扦插苗不定根形成有不同程度的促进作用。而高浓度BSA(≥15.15μmol/L)处理与对照相比,降低了扦插苗的生根率、显著减少侧根数和平均根长,使植物内源GA、ABA、ZR和IAA含量向不利于根系形成和生长的方向变化,对扦插苗不定根形成有不同程度的抑制作用。Endangered plant Cercidiphyllum japonicum was used to investigate the relationship between bovine serum albumin（BSA） and the development of plant cuttings root system. Physiological and morphological responses to exogenous BSA of different concentrations were studied. The results showed that applying appropriate BSA（≤7.58 μmol / L） was able to increase the cutting root rate and lateral root number and average length of root,enhance root activity and conducive the plant endogenous GA,ABA,ZR and IAA content changed in the direction of promoting the growth of roots and adventitious root formation of cuttings. However,high concentrations of BSA（≥15.15 μmol / L） have different extent inhibition effects,and reduce the number of lateral roots,average root length and rooting rate than the control,and the plant endogenous GA,ABA,ZR and IAA content changed in the direction of inhibiting adventitious root formation and the growth of root in different degrees.

关 键 词：牛血清白蛋白 连香树(Cercidiphyllum japonicum) 扦插繁殖 根系 植物内源激素 

分 类 号：Q949.746.4[生物学—植物学] S615[农业科学—园艺学]