比克氏棉和司笃克氏棉色素腺体形态建成的组织结构观察  

Observation on the Anatomical Structure of Pigment Glands in G.bickii and G.stockii

作　　者：丁亮[1] 祝水金[1] 胡丹艳[1] 季道藩[1] 

机构地区：[1]浙江大学农业与生物技术学院,杭州310029

出　　处：《棉花学报》2003年第1期17-21,共5页Cotton Science

基　　金：国家自然科学基金资助(39970467;39830240;30270845)

摘　　要：对具有子叶色素腺体延缓形成性状的比克氏棉和种子有色素腺体但低酚的司笃克氏棉的休眠种子、幼胚发育过程和种子萌发过程中的子叶进行连续切片观察。结果表明,比克氏棉的种仁中虽无肉眼可见的色素腺体,但具有色素腺体原,其色素腺体形态建成从开花后子叶形态建成后开始到种子萌发后12h才完成。司笃克氏棉在幼胚发育过程中,也出现色素腺体原的结构,但保持的时间较短,到种子成熟时,其种仁中的色素腺体原大多已发育成正常的色素腺体,且色素腺体空腔中含有某些有色物质,腔壁明显不同于比克氏棉或一般有色素腺体棉。司笃克氏棉的色素腺体性状为介于一般有色素腺体棉和具有子叶色素腺体延缓形成性状棉种的中间过渡类型,这种性状在低酚棉育种研究中具有重要的实践意义。The anatomical structure of two cotton species in Gossypium, G.bickii, the species with the character of delayed gland morphogensis, and G.stockii, the species with the character of glanded seeds and low gossypol content, were studied in this paper. The results reviewed that there were special structure called 'gland primodium' in embryo of G.bickii, although it is glandless by naked eyes. The period for gland formation of G.bickii started from the formation of cotyledons in the embryo to the seed germination. As for the specie of G.stockii, although there were the special structures of 'gland primodium' in embryo during the development of the embryo as well, the gland primodium period was relatively short, and most of the primodium had become the real glands with a small cavum at the stage of matured seeds. In addition, there were some dark stained materials inside the cavum of the glands, and the wall of the gland cavum in the G.stockii was much different from that of G.bickii and normal glanded upland cotton, indicated that the gland type of G.stockii was intermediate one between the normal glanded and the delayed gland morphogenesis trait of Australian wild species. It is suggested that the gland and gossypol character of G.stockii are important traits for low gossypol cotton breeding. Key ward: pigment gland; anatomy; G.stockii; G.bickii

关 键 词：比克氏棉 司笃克氏棉 色素腺体 形态建成 组织结构 

分 类 号：S562.01[农业科学—作物学]