双氧水对黑皮冬瓜种子萌发的影响

黑皮冬瓜种子经不同浓度的双氧水预处理后进行种子发芽试验，结果表明，经0．5％和1．0％的双氧水处理可显著促进黑皮冬瓜种子的萌发，提高种子活力。尤以0．5％的双氧水处理效果最佳，能显著地提高黑皮冬瓜种子的发芽率、发芽势、发芽指数、发芽速度和发芽整齐度。     

功能性电极快速伏安检测孔雀石绿

用阴离子表面活性剂十二烷基硫酸钠(SDS)修饰导电炭黑糊电极,制备了对孔雀石绿(MG)具有高灵敏度的功能传感器。实验对MG在该功能电极上的电化学行为进行了研究,并对影响测定的各种条件(制备糊电极所用导电材料种类;功能试剂修饰量;支持电解质的离子强度、pH值、种类;富集电位与时间等)进行了优化。在优化条件下,MG的氧化峰电流(ipa)与其浓度在5～200μg/L范围内呈线性关系,检测限为1.5μg/L(S/N=3)。该方法具有较高的灵敏度、良好的重现性和稳定性。应用于测定经过简单过滤预处理后的淡水渔业水样,平均回收率为90%。     

泰山赤鳞鱼同工酶性别和组织表型差异的研究

应用聚丙烯酰胺凝胶电泳结合生化染色方法分别对雌雄泰山赤鳞鱼11种组织中苹果酸脱氢酶(Malate dehydrogenase,MDH,E.C.1.1.1.37)同工酶酶谱进行了分析.首次发现苹果酸脱氢酶、酸性磷酸酶和超氧化物岐化酶表型在赤鳞鱼雌性和雄性之间存在差异,而在同一性别不同个体之间无差异.因此,苹果酸脱氢酶、酸性磷酸酶和超氧化物岐化酶的电泳酶谱可以作为一项指标用于泰山办鳞鱼性别和组织的鉴定.这将为赤磷鱼种群的发育遗传学、品种改良和定向育种提供基础资料,从而有利于这一名贵育鱼种的开发和保护. Abstract： Polyacrylamide gel electrophoresis (PAGE) and biochemical staining method were used in this study for the analysis on malate dehydrogenase (MDH,E.C.1.1.1.37) isozymes zymogram in 11 different types of tissues of male and female Varicorhinus macrolepis.It had been found for the first time that the phenotype of malate dehydrogenase (MDH),acid phosphatase (ACP) and superoxide dismutase (SOD) showed difference between male and female V.macrolepis,and there was no difference among different individuals in the same sex.Therefore,the electrophoresis band of malate dehydrogenase,acid phosphatase and superoxide dismutase could be used as an indicator for the identification of gender and tissues of V.macrolepis,which would provide basic data for the developmental genetics,vadety improvement and directed breeding of V.macrolepis groups,thus facilitating the development and protection of this valuable fish species.