小麦同核异质雄性不育系花粉发育的超微结构  

Ultrastructure of Pollen Development in Isonuclear Alloplasmic Male Sterile Wheat Lines

作　　者：李传友[1] 孙兰珍[1] 

机构地区：[1]山东农业大学农学系

出　　处：《华北农学报》1998年第1期24-29,共6页Acta Agriculturae Boreali-Sinica

摘　　要：对小麦８３（２１）３５核背景下三种细胞质雄性不育系（Ｔ，Ｖ，Ｋ）及保持系的花粉发育过程进行了超微结构研究，发现Ｔ型和Ｖ型不育系花粉败育前和败育中，液泡膜处于解体状态，细胞质和液泡间的有效分隔被破坏，液泡对细胞质的吞噬作用强烈，线粒体等细胞器解体或退化。Ｖ型不育系花药绒毡层内表面缺乏乌氏体分泌。在Ｋ型不育系花粉败育前，没有观察到线粒体、质体等细胞器结构方面的异常变化，但见到一种同心圆复合膜状结构以很高的频率出现。Ultrastructural observation under a transmission electron microscope of pollen development in three cytoplasmic male sterile lines (T,V and K)of wheat on 83(21)35 nuclear background,and that in maintainer line revealed that before and in the process of pollen abortion of cms T and cms V,the vacuole membrane seemed to be on the way of dissolution,with the effective separation between the cytoplasm and vacuole having been destroyed and that the phagocytosis of cytoplasm by the vacuole was very violent,resulting in the much thinner cytoplasm,while other organelles such as mitochondria were disintegrated or degenerated.With cms V,the inner wall of anther tapetum secreted fewer Ubish bodies;but with cms K,no abnormal changes in mitochondria and plastids happened before pollen abortion,but a concentrically circular composite membranous structure was found to be appear at a high frequency.

关 键 词：小麦 细胞质雄性不育 同核异质系 超微结构 

分 类 号：S512.103.5[农业科学—作物学]