| （摘要内容经过系统自动伪原创处理以避免复制，下载原文正常，内容请直接查看目录。） 为明白外源赤霉素(GA3)和水杨酸(SA)对园林植物耐盐性的引诱感化，以德国鸢尾(Iris germanica)为资料，在100mmol/L的NaCl钳制前提下，德语论文范文，采取根际打针联合叶面喷施外源激素的办法，研究了分歧浓度的外源GA3和SA对盐钳制下德国鸢尾的形状目标、盐害指数和心理目标的作用。成果以下：外源GA3和SA对盐钳制下德国鸢尾发展形状的作用。NaCl钳制严重克制德国鸢尾的发展，合适浓度的外源GA3和SA能显著改良盐钳制下德国鸢尾的发展状态，表示为株高、叶长、全株干质量年夜幅度进步，植株根冠比、盐害指数显著下降。赤霉素处置中G4(200mg/L)、G3 (100mg/L)的后果较好，但G4植株涌现了必定的徒长景象，德语专业论文，茎叶细弱，不雅赏价值下降，综合比拟得出100mg/L后果最好；水杨酸S3 (200mg/L)处置后果最好，高浓度的S4 (300mg/L)处置对德国鸢尾的发展发生了必定的负感化。外源GA3和SA对盐钳制下德国鸢尾光协影响和渗入渗出调理才能的作用。外源GA3和SA明显进步了叶片叶绿素含量、绝对含水量，显著增长了可溶性糖、可溶性卵白等渗入渗出调理物资的含量，从而有用加强了德国鸢尾的光协影响，减缓了渗入渗出钳制对德国鸢尾形成的损害。两种激素中G3、G4、S3后果较好，且G3和G4之间差别不明显。外源GA3和SA对盐钳制下德国鸢尾细胞膜稳固性的作用。盐钳制下，施加合适浓度的外源GA3和SA都可以进步德国鸢尾超氧化物歧化酶(SOD)和过氧化物酶(POD)的活性，并下降细胞膜透性和MDA含量，加强植株细胞膜稳固性，引诱植株进步盐钳制的抵御才能。GA3的感化后果全体好过SA， GA3较好的处置为G3和G4，SA后果较好的是S3处置。外源激素GA3和SA的感化特色。合适浓度的外源GA3和SA都可以进步德国鸢尾的耐盐性，但这类调理感化无限，并存在必定的时效性。经由过程形状目标和心理目标的剖析得出，两种激素中，GA3增进感化比拟显著，且不存在高浓度的克制感化，而高浓度的SA对德国鸢尾的发展发生必定的负感化。联合本实验的形状目标和心理目标综合剖析获得，赤霉素较合适的浓度为100mg/L，水杨酸的合适浓度约为200mg/L。 Abstract: Is clearly Exogenous Gibberellin (GA3) and salicylic acid (SA) on garden plants resistant to salt the revulsive action, to German iris (Iris germanica) data, in 100 mmol / L NaCl clamp under the premise, take root injection combined with exogenous foliar spraying hormone, research the different concentrations of Exogenous GA3 and SA on salt clamp of Iris germanica target shape, salt harm index and psychological effects. Results: the effects of exogenous GA3 and SA on salt down under the German iris shape. Development of NaCl clamp severe restraint of Iris germanica, the appropriate concentration of Exogenous GA3 and SA can significantly improved salt clamp of Iris germanica development state, expressed as strains height, leaf length, plant dry quality has been greatly improved, plant root to shoot ratio, salt injury index decreased significantly. The consequences of gibberellin in the disposal of G4 (200mg / L), G3 (100mg / L) is better, but G4 plants emerged must leggy scene, stems and leaves thin, indecent appreciation value decreased, a general comparison that 100mg / L consequences. S3 salicylate (200mg / L) consequence management best, high concentration of S4 (300mg / L) disposal certain negative influence in the development of Iris germanica. Effects of exogenous GA3 and SA on the salt damage of Iris germanica and photosynthesis infiltration to the conditioning. Exogenous GA3 and SA significantly progress the leaf chlorophyll content, the absolute moisture content, significantly increased the content of soluble sugar, soluble protein and infiltration conditioning materials, thereby effectively enhancing the photosynthesis of Iris germanica, slow down the seep into the clamp of Iris germanica formation damage. The results of G3, G4 and S3 were better in two kinds of hormones, and the difference was not significant between G4 and G3. Exogenous GA3 and SA influence on the stability of cell membrane under salt containing iris germanica. Under salt clamp, applying the appropriate concentration of Exogenous GA3 and SA can progress of Iris germanica superoxide dismutase (SOD) and peroxidase (POD) activity, and decreased cell membrane penetration and the content of MDA, strengthen plant cell membrane stability and lure improve the plant salt clamp can resist. GA3 effect of all better than SA, GA3 better disposal for G3 and G4, SA is the result of better S3 disposal. The effects of exogenous hormones GA3 and SA. Appropriate concentration of Exogenous GA3 and SA can progress of Iris germanica resistance to salt, but this kind of adjustment action infinite, and there a certain timeliness. Through the analysis of the process of target shape and psychological draw, two hormones, GA3 promote action match significantly and there is no restraint effect of high concentration, and high concentration of Sa of Iris germanica development occurred certain negative effect. Combined with the objective of the shape of the target and the comprehensive analysis of the psychological goal, GA is more suitable for the concentration of 100mg/L, the appropriate concentration of salicylic acid is about 200mg/L. 目录: |
