▁was ▁acting ▁on ▁the ▁ax ill ary ▁bud s . ▁D ifferent ▁tests ▁that ▁consisted ▁in ▁inserting ▁part ▁of ▁the ▁mut ants ▁plants ▁into ▁wild ▁spec im ens ▁( and ▁vice ▁vers a ), ▁were ▁able ▁to ▁demonstrated ▁that ▁the ▁mut ants ▁were ▁either ▁not ▁able ▁to ▁recognize ▁a ▁signal ▁mole c ule ▁coming ▁from ▁the ▁roots ▁and ▁the ▁lower ▁part ▁of ▁the ▁plant , ▁or ▁not ▁able ▁to ▁produce ▁the ▁require ▁mole cules ▁to ▁in hib it ▁branch ing . ▁This ▁mole c ule , ▁that ▁was ▁involved ▁in ▁branch ing ▁reg ulation , ▁was ▁later ▁identified ▁to ▁be ▁a ▁str ig ol act one . ▁The ▁conclusion ▁was ▁that , ▁in ▁presence ▁of ▁str ig ol act ones , ▁the ▁plant ▁would ▁be ▁prevent ed ▁to ▁over g row th ▁and ▁develop ▁excess ive ▁branches , ▁but ▁when ▁is ▁not ▁present , ▁the ▁ax ill ary ▁bud ▁will ▁start ▁indu cing ▁ab normal ▁branch ing . ▁ ▁Chem istry ▁ ▁Properties ▁ ▁Although ▁str ig ol act ones ▁vary ▁in ▁some ▁of ▁their ▁functional ▁groups , ▁their ▁mel ting ▁point ▁is ▁usually ▁found ▁always ▁between ▁ 2 0 0 ▁and ▁ 2 0 2 ▁Cel si us ▁degrees . ▁The ▁decomposition ▁of ▁the ▁mole c ule ▁occurs ▁after ▁reaching ▁ 1 9 5 o C . ▁They ▁are ▁highly ▁sol ub le ▁in ▁polar ▁sol vent s , ▁such ▁as ▁ac et one ; ▁sol ub le ▁in ▁ben z ene , ▁and ▁almost ▁ins ol ub le ▁in ▁hex ane