五,乙烯(ETH) 乙烯是植物在生长发育的某些时期所产生的代谢产物,它一旦在组织内形成,就会影响植物的新陈代谢,引起多种生理效应。所以,它也是一种内源激素。乙烯可抑制伸长生长;使茎增粗,叶柄 V. Ethylene (ETH) Ethylene is a metabolite produced by plants at certain stages of their growth and development. Once formed in the tissues, ethylene affects the metabolism of plants and causes a variety of physiological effects. So, it’s also an endogenous hormone. Ethylene can inhibit the growth of elongation; thicken the stems, petioles