Articles
DYNAMICS OF ENDOGENOUS POLYAMINES IN SEEDLING TREES OF PYRUS USSURIENSIS MAXIM. × P. BRETSCHNEIDERI REHD.
Article number
774_10
Pages
89 – 94
Language
English
Abstract
The endogenous polyamine contents were analyzed both qualitatively and quantitatively in leaves and phloem of pear seedling trees (‘Jingbai’ × ‘Ya Pear’) by high performance liquid chromatography.
The putrescine concentration peaked at the node nos. 86-90. And the ratio of putrescine/spermidine+spermine was exceeded 1 in samples taken from the nodes higher than the node nos. 86-90. The results implicated that the node nos. 81-85 would be an important physiological transition point of interspecific hybrid seedling trees in Pyrus.
The putrescine concentration peaked at the node nos. 86-90. And the ratio of putrescine/spermidine+spermine was exceeded 1 in samples taken from the nodes higher than the node nos. 86-90. The results implicated that the node nos. 81-85 would be an important physiological transition point of interspecific hybrid seedling trees in Pyrus.
Authors
Chun Min Li, Xin Zhong Zhang, Wen Quan Yue, Yong Bo Zhao, Wen Fang Zu, Guang Peng Wang, Rui Feng Chang, Huai Rui Shu
Keywords
phase change, polyamines, Pyrus
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