---

作 者 ：解备涛  翟志席  翟丙年  段留生  李召虎

期 刊 ：西北植物学报 2006年 6期

关键词：UV-B；玉米花粉；抗氧化酶；穗粒数；

Keywords:UV-B radiation, corn pollen, antioxidase, kernel number per ear,

摘 要 ：在玉米散粉期,收集花粉进行UV-B辐射增强处理后进行人工授粉研究,结果表明,随着UV-B辐射时间的增加,玉米花粉的SOD、POD和CAT活性都呈明显下降的趋势,而MDA含量则呈相应上升的趋势;玉米每穗粒数与花粉抗氧化酶活性呈正相关、与MDA含量呈负相关关系,并随UV-B辐射时间延长呈下降趋势,且辐射超过2h后下降达到显著水平;玉米百粒重随UV-B辐射时间的延长明显下降,但辐射花粉1~2h对其无显著影响;UV-B辐射花粉对籽粒的可溶性糖、淀粉、脂肪及粗蛋白含量等营养成分无显著影响。

Abstract:Corn pollens were collected at the pollinating stage of corn,then treated with enhanced UV-B radiation and used in artificial pollination.The results showed that as the UV-B radiation prolonged,the SOD,POD and CAT activities in the pollens appeared to dec

---