这一令人鼓舞的消息源于这样一个发现：较低的白蜡树枯梢病易感性与较低水平的植物化学物质“环烯醚萜苷类”(iridoid glycosides)之间存在关联。
The encouraging news comes from the discovery of a link between reduced susceptibility to ash dieback and lower levels of plant chemicals called iridoid glycosides.
主要研究结果如下：1、环剥能够有效地控制春梢的抽发，并使节间缩短，从而抑制春梢的伸长生长。
The main results were as following: 1. Girdling inhibited the sprouting of spring shoot, and shortened the internode, thereby restrained the growth of the spring flushes.
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