AC药剂对悬铃木球果脱落的生理效应

Physiological Effect of AC Chemical Preparation on the Abscission of Plane Tree

悬铃木挂果初期，在树于基部打孔注人AC药剂．处理一个月后倒定，结果表明，嫩枝残存球果鲜重减轻，含水量下降，活性减小，电解质外渗率增加，球果皱缩、萎蔫干枯而脱落。这与果内过氧化氢酶活性下降，过氧化氢大量积累；导致球果膜脂过氧化作用、破坏质膜、伤害细胞有关。

Drilled a hole and…cted into AC(ethrel 10O, 2—thiouracil 50mp/ L, ramrod 50mp/ L) chemical preparation at thC base of thC plane tree, durl昭 the early po- riod when It hangs corn.AllltZnth later,the tCsults showed that th per unit WO妙t of趾 rem以Ining cones ot tender branch Isl帧ie胀d,thellloistufC content IS drord,the actlvlteis reduced the electrolyte exosmosls rate rises’ and the cones crease, wilt and absclse greatly.It IS conllocted wth the reduction of Peroxldase of hydrogen activity and the gf6at accumulation of peroxide of hyd昭en to lead to ptoxldatlon of cone cell mem- brane llpoiu to destroy cell membrane and llljury cell.