棉花四个栽培种花粉粒壁的剥离技术及扫描电镜的比较研究

本文应用花粉粒壁的剥离技术和扫描电镜对棉花四个栽培种(陆地棉北农-1号;海岛棉8763依;中棉完县紫杆和草棉金塔)的花粉粒进行观察。着重观察比较各棉种的花粉粒大小、外壁纹饰和刺的分布。经剥离花粉粒壁后,还观察了花粉粒外壁结构包括外壁—1(复盖层,柱状层和基层)和外壁—2的结构以及萌发孔的构造排列状况。

THE COMPARATIVE:STUDIES ON THE POLLEN GRAINS OF FOUR CULTIVATED COTTON SPECIES BY USING THE POLLEN WALL STRIPPING TECHNIQUE(PWST)AND THE SCANNING ELECTRON MICROSCOPE(SEM)

This paper is the comparative studies on the pollen grains of four cultivated cotton species e.g.Gossypium hirsutum(B.A.No.1),G.ba- rbadense(8763E),G.arboreum(Wanxian-purple stalk)and G.harba- ceum(Golden Tower),by using PWST and SEM.The pollen grains size, the exine ornamentation and the spine distribution of four species we- re observed respectively and comparatively.Having been stripped,the pollen wall,the exine structure including exine-1(tectum,bacula lay- er and pediam)and exine-2 and the structure an...