Botany Department, University of Glasgow, Scotland.
Planta. 1970 Sep;95(3):272-6. doi: 10.1007/BF00385093.
Exudation can be induced or greatly enhanced in Ricinus by massaging the stem periodically some time before tapping the sap by making an incision. Nevertheless temporary massage during exudation stops flow completely indicating that flow is prevented normally by a pressure sensitive sealing mechanism which becomes desensitised by regular massage.
在蓖麻上,通过在切口前定期对茎进行按摩,可以诱导或大大增强渗出,尽管在渗出过程中进行暂时的按摩会完全阻止流动,这表明正常情况下流动是由压力敏感的密封机制阻止的,而这种机制会被定期按摩脱敏。