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Dynamics of Endogenous Cytokinins during Phase Change in Malus domestica Borkh

文献类型: 外文期刊

作者: Zhang, Xin Zhong 1 ; Zhao, Yong Bo 1 ; Wang, Guang Peng 1 ; Chang, Rui Feng 1 ; Li, Chun Min 1 ; Shu, Huai Rui 2 ;

作者机构: 1.Hebei Acad Agr & Forestry Sci, Changli Inst Pomol, Changli 066600, Peoples R China

2.Shandong Agr Univ, Dept Hort, Tai An 271018, Shandong, Peoples R China

3.China Agr Univ, Inst Hort Plants, Beijing 100193, Peoples R China

关键词: cytokinins;apple;distribution;phase change;leaf;bark

期刊名称:PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM ON ENDOGENOUS AND EXOGENOUS PLANT BIOREGULATORS

ISSN: 0567-7572

年卷期: 2008 年 774 期

页码:

收录情况: SCI

摘要: In order to identify the dynamics of endogenous cytokinins during phase change in hybrid seedlings of apple, cytokinins in leaves and the bark of two-year-old seedlings ('Jonathan' x 'Golden Delicious') were extracted and analyzed by high performance liquid chromatography. The results indicated that a higher level of zeatin (ZT) content was found from node nos. 81-85 to nos. 121-1.25 in bark samples, indicating that the seedlings were at special physiological stages. No significant variations of dihydrozeatinriboside (DHZR) contents in leaf were found except a sharp decrease between node nos. 81-85 and nos. 116-120. The N-6-isopentenyladenine (iP) content in the bark peaked from the node nos. 101-105 to nos. 121-125. The dynamics of ZT in the bark and DHZR in leaves could be quantitative markers of the adult vegetative phase in apple seedlings.

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