Naphthalene acetic acid (NAA) bụ ihe na-ahụ maka uto osisi sịntetị nke sitere na klaasị naphthalene nke ogige. Ọ bụ crystalline siri ike na-enweghị agba, soluble na mmiri na ihe mgbaze organic. A na-eji Naphthalene acetic acid (NAA) eme ihe n'ọtụtụ ebe n'ọhịa nke nhazi usoro ihe ọkụkụ, karịsịa na-ekere òkè dị mkpa na uto na mmepe nke osisi mkpụrụ osisi, akwụkwọ nri na okooko osisi.

Chlormequat chloride (CCC) bụ onye na-emegide gibberellins. Ọrụ ya bụ igbochi biosynthesis nke gibberellins.Ọ nwere ike igbochi elongation cell na-enweghị emetụta nkewa sel, na-egbochi uto nke ị ga na akwụkwọ na-enweghị emetụta mmepe nke akụkụ mmekọahụ, si otú ahụ nweta nchịkwa. nke elongation, guzogide ebe obibi na ịbawanye mkpụrụ.