比较了CMS水稻不育系珍汕97A及其同核异质保持系珍汕97B的叶片、幼穗和花药中的膜脂过氧化、活性氧水平及活性氧清除酶活性。结果表明:与可育花药相比,不育花药中H_2O_2和O_2水平较高,丙二醛(MDA)含量也高,而超氧物歧化酶(SOD)、过氧化氢酶(CAT)、过氧化物酶(POD)和抗坏血酸过氧化物酶(ASA-POD)活性则较低,幼穗中,不育系的H_2O_2和MDA含量高于保持系,其它指标基本无差异,叶片中不育系H_2O_2含量较高。说明不育株与可育株的活性氧代谢的差异主要存在于生殖器官中,特别于花药中;叶片与幼穗中虽有H_2O_2的差异,未对除花药外的器官的生长发育造成明显影响。 Membrane lipid peroxidation, reactive oxygen species, and active oxygen scavenging enzyme activities in leaves, young spikes and anthers of CMS line Zhenshan 97A and its isonuclear maintainer line Zhenshan 97B were compared. The results showed that compared with fertile anther, the levels of H 2 O 2 and O 2 were higher in male sterile anthers than those in male sterile anthers, and the contents of malondialdehyde (MDA) and malondialdehyde (MDA) The activities of POD and ASA-POD were lower, and the contents of H_2O_2 and MDA in the male-sterile lines were higher than those in the maintainer lines. There was no significant difference in the other indexes, H_2O_2 content is higher. The difference of active oxygen metabolism between sterile plants and fertile plants was mainly found in reproductive organs, especially in anthers. Although the difference of H_2O_2 between leaves and young ears did not affect the growth and development of organs except anthers .