导　　师： 姜远茂;彭福田

学科专业： I0201

授予学位： 硕士

作　　者： ;

机构地区： 山东农业大学

摘　　要： The study used the apple trees/(Malus domestica Borkh. cv Red Fuji/)//Malus hupehensis as the materials, was carried out in the apple orchard of Shezhuang,Yiyuan County, Zibo City, and in Shandong Agricultural University fruit research station from 2007 to 2009. Enzyme-linked immunosorbent assays /(ELISA/) technology was used to investigate the dynamic changes of the new shoot growth and the endogenous hormone contents of pot apple trees after branch bending. Trees labelled with stable isotope ~/(13/)C、~/(15/)N in pot condition were studied to explore the effects of branch bending angle on characteristics of ~/(13/)C、~/(15/)N distribution ratio, while trees in field condition were used to explore the effects of branch drooping on characteristics of absorption, distribution and utilization of ~/(15/)N-urea through soil application in spring. The main results were as follows: Bend branch angle obviously inhibit the growth of new shoots. At autumn shoot growing stage,The growth lengths of control、horizontal branch and drooping branch were 50.7cm、21.4cm and 18.1cm respectively, this indicated that the branch length of control was obviously higher than that of branch bending. The levels of endogenous ABA in shoot tip of horizontal branch and drooping branch were 17.5/% and 29.2/% more than that of control, while the levels of GA、IAA decreased significantly. meanwhile the level of ZR decreased unconspicuously. The level of endogenous ABA in fine roots of branch bending was significantly higher than that of control, whereas the levels of GA and IAA decreased in different grade angle, and the content of ZR showed little different. The ratio of /(IAA+GA+ZR/)//ABA in new shoot tip and fine roots decreased along with the bending angle, the length in shoot tip of control、horizontal branch and drooping branch were 2.11,1.61,1.36 respectively at autumn shoot growing stage. The ~/(13/)C distribution ratio to roots decreased significantly along with the bending angle. The maximum value of ~/(13/)C distrib

关 键 词： 苹果 开张角度 内源激素 尿素 利用

领　　域： [电子电信] [农业科学] [农业科学]