Recently, several peptidal plant growth regulating substances were isolated.

最近 ，已从植物中分离出多种肽性植物生长调节因子。

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So applying growth regulating substances in the culture of Flammulina velutipes is safe.

因此，在金针菇栽培中使用生长调节物质是安全的。

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Respiratory rate and ethylene evolution and the levels of endogenous growth regulating substances were determined before and after harvest during the period of senescence of cantaloupes.

本文对麻醉瓜采收前后及衰老期间的呼吸强度、乙烯生成及内源生长调节物质作了测定。

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