| Acer truncation Bunge is a species of the Acer family plants,it is deciduous trees. North China five maple (Acer truncatum Bunge) for Aceraceae Acer (Aceraceae)(Acer) deciduous trees.After many years research, the species has become a set of ecological, economic and social benefits in a new type of economic plants, have very high development prospect.North China five maple of asexual reproduction in particular cutting propagation home has not seen the system reports.The research on the North China five Maple cutting propagation techniques and Rooting Mechanism of further research, for the North China five Maple cutting propagation provides theoretical basis.The results of this study show that:1. different hormones on Rooting of cuttings of impact studies show that, after treatment by NAA rooting rate of growth indicators are better than Controlled processing, the best rooting rate is78.85percent.Use of exogenous hormone treatment after cutting root, there is obvious changes, the quantity of root nodes and internodes increased significantly, and the incision root significantly reduced the number of.Cuttage Rooting Condition of different parts of rooting rate and root effect index showed a similar pattern, a sequence from big to small is the middle upper> section>.Wherein, the upper and lower segments of the root effect index difference was not significant, and there are significant differences both in the middle of the.Length9-13cm after the cutting performance of all aspects of all the best.The coarse degree of0.3-0.5cm rooting effect to be better than the other two level, the production should be preferred diameter of0.3-0.5cm cuttings, followed by0.5-0.7cm cuttings.Cuttage Rooting types on the influence study, using ordinary garden soil, river sand and peat soil3materials as Cuttage Rooting rate is highest, river sand.2.Nutrient Dynamic Change and rooting relationship research shows:the exogenous hormone treatment, can make the cuttings moisture is maintained at a high level, reduce water consumption.Can be informed:cuttings with high moisture content in favor of rooting. Basal of cuttings of soluble sugar content increased first and decreased after the rising trend, adventitious root formation was the lowest.And deal with the soluble sugar content was higher than that of the control group, treatment of rooting rate was significantly higher than the control, therefore, improve the content of soluble sugar in favor of rooting. The starch content of the overall trend is to rise and then decline, starch content plays a negative role on rooting softwood cuttings, after treatment, the starch content was lower than that of the control, may be related to the processing of starch of high activity related to drunk.Treatment and control of the changes of soluble protein content were increased After processing the cuttings in protein content is higher than.Cuttings protein content, is the effect of rooting is an important factor, hormone treatment can improve the softwood cuttings rooting of protein content, favorable.SOD is on the rooting of cuttings and promote an active enzyme.NAA SOD activity delay reducing, and leveled off.Treatment and control of the change of POD activity is consistent, the overall level is higher than that of the control treatment.Studies have found that POD is also to promote the rooting of cuttings.Treatment of cuttings of the change of PPO activity was rising and falling to rise and then decline, in the test after hormone treatment. PPO activity was significantly increased, and the treated cuttings rooting rate has been significantly improved, PPO on Rooting of cuttings have stimulative effect.3. north five Maple ’Beijing2’ during the cuttings rooting of cuttings rooting of endogenous hormone content and closely related, cuttings root primordium differentiation and growth at high concentrations of endogenous IAA and low concentrations of endogenous ABA action was promoted, North China five Maple ’Beijing2’ adventitious root formation of cuttings in high concentrations of endogenous GA action can be restrained; North China five Maple ’Beijing2’ rooting in different period, the different roles of endogenous ZR, low concentrations of endogenous ZR promotes root primordium differentiation, whereas higher concentrations of endogenous ZR in favor of root primordium growth;4types of endogenous hormone content and the initial the correlation between rooting rate showed different, ABA, initial concentration of GA and rooting rate was negatively correlated, while IAA, ZR was positively related to IAA, which is most closely related with the rooting rate. |
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