水杨酸和萘乙酸对山茱萸种子萌发的生理学影响

Physiological Effects of NAA and SA on Seed Germination of Cornus Officinalis

本文研究了外源萘乙酸和水杨酸对山茱萸种子萌发及其对抗氧化酶系的影响.结果表明,山茱萸种子经处理后,低浓度(0.01 mmol.L-1,0.05mmol.L-1)萘乙酸(NAA)和中浓度(0.01mmol.L-1~0.10mmol.L-1)水杨酸(SA)可促进山茱萸种子的萌发,其中0.01mmol.L-1NAA处理后萌发率显著提高(x2=4.667>x20.05=3.841,P<0.05)和0.05mmol.L-1SA效果显著高于对照(x2=5.093>x20.05=3.841,P<0.05),它们均提高了CAT和SOD酶的活性,改善了膜的相对透性和完整性.而中浓度和高浓度(高于1.00mmol.L-1)NAA以及低于0.01mmol.L-1或高于1.00mmol.L-1SA会抑制山茱萸种子萌发或促进萌发作用不明显.

The effects of external NAA and SA on seed germination of Cornus officinalis and antioxidase were studied.The results indicated that,the concentrations of 0.01 mmol·L^(-1) and 0.05 mmol·L^(-1) of NAA and the concentrations of 0.01mmol·L^(-1)~0.10 mmol·L^(-1) of SA may promote seed germination of Cornus officinalis,of which,germination percentage applied 0.01mmol·L^(-1)NAA was remarkably higher than control group and other concentrations(x^2=4.667 >x^2_(0.05)=3.841,P<0.05),and that of applied 0.05(mmol·L^(-1))SA was significantly higher than control group(x^2=5.093 >x^2_(0.05)=3.841,P<0.05),which greatly increased activities of CAT and SOD,and improved penetrativity and integrity.But concentrations more than(1.00) mmol·L^(-1) of NAA and that less than 0.01 mmol·L^(-1) or 1.00 mmol·L^(-1) of SA restricted from or not being apparent promotion of seed germination.