Abstract: [Objective] To study the activities of SOD,POD,and the contents of MDA and proline in male and female flowers of walnut under different amounts of dust,the aim of this study is to investigate the effects of flowering dust on the biochemical characteristics of walnut flower organs,and deepen the understanding of the effect of dust on the flower organs of walnut in the southern Xinjiang basin.[Method]With Juglans regia'Wen185'as the experimental material,The control plant was set up by using the male and female artificial dustproof bagging and artificial simulation different levels of dust on the plants were used as the experimental treatments to analyze the effect of dust on male and female floral organ.[Result]Compared with the control,all the treatments of artificial simulation different levels of dust could increase the activities of SOD and POD and the content of proline in the male and female flowers.During the flowering of the female flowers,the difference of the activities of SOD and POD,and the contents of MDA and proline in all the treatments reached significant level(P<0.05)or extremely significant level(P<0.01).During the flowering of male flowers,the difference of the activity of SOD and POD,and the content of MDA and proline of all the treatments reached significant level(P<0.01),except the SOD and proline in male flowers at the beginning of flowering.[Conclusion]During the flowering of walnut,dust could increase the activity of SOD and POD and the content of proline and MDA in walnut male and female flower,thus adversely affecting the flower organs of walnut.

摘要： [目的]研究不同降尘量处理条件下,核桃(Juglans regia L.)雌雄花超氧化物歧化酶(SOD)、过氧化物酶(POD)活性和丙二醛(MDA)、脯氨酸含量的变化,研究花期降尘对核桃花器官生化特性的影响,探明降尘对新疆南疆盆地核桃花器官影响.[方法]以温185(J.regia Wen185)核桃品种为试验材料,采用雌雄花套袋人工防尘设置对照植株,以人工模拟降尘为处理植株,对比分析不同降尘量处理条件下核桃雌雄花SOD、POD活性和MDA、脯氨酸含量的变化.[结果]与对照植株相比,不同降尘量处理核桃雌雄花SOD、POD活性和MDA、脯氨酸含量均有不同程度的增加.雌花花期,不同降尘量处理之间的核桃雌雄花SOD、POD活性和MDA、脯氨酸含量差异达到极显著水平(P<0.01)或显著水平(P<0.05).雄花花期,对照植株雄花SOD(除初期以外)、POD活性和脯氨酸(除初期以外)、MDA含量均与受降尘处理的植株雄花差异达到极显著水平(P<0.01).[结论]核桃花期若遭遇浮尘天气,降尘会引起核桃雌雄花SOD、POD活性和MDA、脯氨酸含量的增加,进而对核桃花器官产生不利影响.