【摘要】 模拟１５％臭氧层减薄水平，研究了紫外Ｂ（ＵＶＢ）辐射增强对小麦的花粉活力及萌发特性以及籽粒产量与其萌发特性的影响。小麦和燕麦的繁殖特性对紫外辐射的敏感性差异很大。增强的紫外辐射显著抑制了燕麦的籽粒产量及萌发率，而对小麦的繁殖效率未有显著影响，小麦花粉活力及萌发率的降低可由单株有效穗数的增加予以补赏。更多还原

【Abstract】 The pollen vitality and germination and also the seed yield and germination of wheat (Triticum aestivum CV. 80101) and oat( Avena sativa VC. Bayaer-3 ) under supplementary UV B radiation from approximately 15% ozone layer depletion were researched. There are sensitivity differences of reproductive characteristics to UV B radiation between wheat and oat. The seed yield of oat and its germination rate(25℃,in dark) were inhibited significantly by UV B radiation enhancement, while there was no effect of UV B radiation on those of wheat. The decrease of wheat pollen vitality and its germination rate by UV B radiation enhancement could be compensated by increase of numbers of ears per plant under supplementary UV B radiation. The effects of UV B radiation are related with metabolic changes of physiological active compounds in pollen and seed which are connected with their germination.更多还原