硼对草坪草超氧化物歧化酶活性、超氧阴离子产生速率和丙二醛含量的影响

采用基质培养法,设缺硼和施硼2种处理,在早秋和春季测定了草坪草超氧化物歧化酶(SOD)活性、超氧阴离子(O2)产生速率和丙二醛(MDA)含量,研究硼对草坪草活性氧代谢的影响,以探讨提高草坪草抗寒性的措施.结果表明:和早秋相比,2种草坪草海滨雀稗和矮脚虎春季SOD活性明显下降,超氧阴离子产生速率和丙二醛含量均明显升高,表明受到了春季低温伤害;施硼显著提高SOD活性,显著降低超氧阴离子产生速率和丙二醛含量,在春季尤为明显;表明施硼提高草坪草保护酶SOD活性,降低了活性氧及膜脂质过氧化对生物膜的伤害,提高了草坪草抗寒性.而2种草坪草相比,海滨雀稗抗寒性高于矮脚虎.

Influences of Boron on the Acitivity of Superoxide Dismutase(SOD),Production Rate of Superoxide Anion Radical and Content of Malondialdehyde in Turfgrasses

Influences of boron on the activity of superoxide dismutase(SOD),production rate of superoxide anion radical and the content of malondialdehyde(MDA)in Seashore paspalum and Tifdwarf were studied under media culture in spring and early autumn for understanding the possible roles of boron in enhancing the chilling resistance of turfgrass.The results showed that the activities of SOD were obviously lower in spring,the production of superoxide anion radical and content of MDA were obviously higher in spring tha...