ANALYSIS OF ALLELOCHEMICALS IN EXTRACTS FROM PEACH AND THEIR EFFECTS ON GROWTH OF AMYGDALUS PERSICA SEEDLINGS

The purpose of this research was to gain clarification concerning the types of allelopathic compounds found in root, shoot and leaf of peach.
The method used was HPLC and GC-MS to analyze the chemicals in peach (Prunus persica) and potted plants were used to investigate the effects of extracts on seedling growth of Amygdalus persica. The results showed that extracts of root inhibited the growth and extracts of shoot and leaf promoted the growth of seedlings.
Allelochemicals such as amygdalin content in root was higher than in shoot and leaf with an order of root > shoot > leaf.
Benzonic acid content in root was about 100 times as much as that of in shoot, and it was not found in leaves. 2,4-Dihroxydybenzonic acid, 3-methoxy,4-hydroxybenzonic acid and catechine were only found in the root but not in the shoot or leaf.
Therefore, we speculate that these allelopathic substances may play an important role in roots which inhibit growth of peach seedlings.

XXVII International Horticultural Congress – IHC2006: International Symposium on Endogenous and Exogenous Plant Bioregulators

Zhimin Liu, Xinghua Wang, Huanpu Ma, Yaping Qi

peach, allelochemicals, replant problem

https://doi.org/10.17660/ActaHortic.2008.774.13