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为探讨牛血清白蛋白(BSA)与植物扦插苗根系发育的关系,以园林植物樟树(Cinnamomum camphora)为试材,研究了不同浓度外源BSA对樟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,比对照提高了扦插苗的生根率、显著增加了侧根数和平均根长,使植物内源GA、ABA、ZR和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。而高浓度的BSA(≥15.15μmol/L)比对照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含量的变化向不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抑制作用。低浓度的BSA浸泡有利于插穗生根及根系的构建,而高浓度则相反。
In order to investigate the relationship between bovine serum albumin (BSA) and the root development of plant cutting seedlings, Cinnamomum camphora was used to study the physiological and morphological responses of camphor tree seedlings with different concentrations of exogenous BSA. The results showed that BSA concentration lower than 7.58μmol / L, compared with the control, the rooting rate of cuttings increased, the number of lateral root and average root length increased significantly, which made the change of endogenous GA, ABA, ZR and IAA contents favorable to Root formation and growth of the direction of change, adventitious rooting of cutting seedlings have different degrees of promotion. However, the high concentration of BSA (≥15.15μmol / L) reduced the rooting rate of cuttings and significantly reduced the number of lateral roots and average root length, which changed the content of endogenous GA, ABA, ZR and IAA to the root Formation and growth of the direction of change, adventitious root cutting seedlings have varying degrees of inhibition. Low concentrations of BSA soaking is conducive to the rooting of cuttings and root construction, while the high concentration is the opposite.