亚硒酸钠对梨叶片感染轮纹病菌后APX、SOD、GPX和GR活性的影响

Effect of Sodium Selenite on Activities of APX,SOD,GPX and GR when Pear Leave are Infected with Physalospora Piricola Nose

用浓度为0、0.5、1.0、1.5 mg.L-1的亚硒酸钠预先处理梨叶片,3d后接种纶纹病菌(Physalospora Piricola Nose),接种3 d后开始测定各种指标.结果表明,经1.0 mg.L-1亚硒酸钠处理的梨叶片,能抑制轮绞病菌感染后抗坏血酸过氧化物酶(APX)、愈创木酚过氧化物酶(GPX)、谷胱甘肽还原酶(GR)和超氧化物岐化酶(SOD)活性的下降.可初步确定,1.0 mg.L-1亚硒酸钠溶液可缓解轮纹病菌对梨叶片的伤害作用.

Sodium selenite in the density of 0, 0.5, 1.0, 1.5 mg · L^-1 was used in advance to deal with pear leaves, which were infected with Physalosopora Pericola Nose after 3 days, and all kinds of indexes were measured 3 days after the infection. The result shows that the pear leaves, dealt with 1.0 mg · L^-1 of sodium selenite, could restrict the reduction of activities of APX, GPX, GR and SOD after the leaves were infected with Physalospor Piricola Nose. It can be initially confirmed that liquid made of 1.0 mg · L^-1 of sodium selenite has effect on relieving harm to pear leave infected with Physalospora Piricola Nose.