一是抑制茎的伸长生长；二是促进上胚轴的横向加粗；三是茎失去负向地性而产生横向生长。这是乙烯特有的反应，可用于乙烯的生物鉴定。
... C NH COO - COO - CH 2 -C=O ^_^ --- --- 5.2 Physiological role and application of Eth • (1) Triple responses (三重反应): • A typical reaction of plant to ethylene represents inhibition and swelling of hypocotyl, inhibition of elongation ,...
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通过干旱与乙烯介导下的番茄幼苗三重反应、植株的生理变化、幼苗生长表现及NR基因表达的研究，探讨干旱对乙烯信号转导的影响。
The relations of NR gene, ethylene and drought were studied by the changes of growth, physiology and expression of NR gene in tomato seedlings under stress of drought and ethylene.
适量咖啡三重保障：经表明，咖啡能够提高人们的记忆力、推理能力以及老年人的反应能力。
Sip some coffee for triple benefit. Coffee has been shown to improve memory, reasoning and reaction time in older folks.
不过与地震后的日本相比，这些都微不足道了。上周的日本地震、地震引发的海啸，再加上人们对震区核反应堆熔毁的恐慌日益加深，为日本汽车业带来了三重威胁。
But there has been nothing like the triple threat in Japan wrought by last week's earthquake and tidal wave, combined with growing worries of a nuclear reactor meltdown.
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