摘要
应用环境扫描电镜(ESEM)研究了73种烟草种子的形态和种皮表面结构特征。结果表明:烟草种子为中型(0.3～2mm),外形多样,颜色有6种:土黄色、浅褐色、褐色、浅棕色、棕色、深棕色。所研究的烟草种子表面纹饰有11种类型。种子表面微形态作为属内种的鉴别具有一定价值,种皮表面纹饰、微观附属物为烟草种的区分提供了新的依据。期望逐步建立起烟草种子微形态谱库,对烟属植物做出更合理的属下等级划分,为我国烟草种质资源的保护、贮藏、利用、鉴别、流通、选种、配种、种子信息查询等提供方便。
An environmental scanning electron microscopic （ESEM） study on seed morphology and testa surface structure of 73 kinds of tobacco seeds was carried out. Results showed that tobacco seeds exhibite medium size （0.3 - 2 mm）, irregular shape, and 6 kinds of seed capsule with different color： khaki, sandy beige, amber, brown, tint brown, dark brown. Ornaments of seed testa were generalized into 11 types. The seed microstrcture in Nicotiana can play an important role in categorizing and distinguishing infra - genus taxa. The ornamentation of seed coat and microscopic attachment can provide new scientific basis for the discri mination of Nicotiana. The purpose was to make infra - genus taxa of tobacco more reasonable and build a seed morphology pool, in order to improve protection, conservation, utilization, deter mination, circulation of tobacco germplasm, seed selection and hybridization and seed information.
出处
《中国烟草学报》
EI
CAS
CSCD
2007年第5期33-34,35-37,共5页
Acta Tabacaria Sinica
关键词
烟草种子
亚显微结构
分类
表面纹饰
微观附属物
tobacco seed
submicroscopic structure
taxa
ornament of testa
microscopic attachment
