摘要
采用透射电子显微镜技术,研究了水分胁迫下烤烟叶片腺毛腺头细胞超微结构的变化。正常灌水条件下,腺头细胞细胞器丰富,细胞质浓厚,液泡中存在电子致密度高的黑色嗜锇颗粒;轻度干旱情况下,腺头细胞中细胞器含量较少,液泡也相应增大,电子致密度高的黑色嗜锇物质有增多趋势;干旱情况下,腺头细胞中细胞器极少,细胞质极少或无,电子致密度高的黑色嗜锇物质较多,有些腺头细胞内部已基本降解。结果表明水分丰缺对腺毛的超微结构有较大影响。
Uhrastructure differences of flue-cured tobacco leaf trichome under water stress were studied by transmission electron microscope. Results showed that the top cell of trichome under normal irrigated condition contained abundant organelles in the cytoplasm, and a great deal of the dark small osmiophilic droplet existed in the vacuole. Under mild drought stress, the number of organelles decreased, vacuole enlarged, and the number of dark osmiophilic droplet increased. In severe drought stress, the trichome top cell contained fewer organelles in the cytoplasm and more osmiophilic droplets. Some cells, were dissolved.
出处
《中国烟草学报》
EI
CAS
CSCD
2008年第5期45-47,共3页
Acta Tabacaria Sinica
关键词
烟草
水分胁迫
腺毛
超微结构
tobacco
water stress
trichome
uhrastructure
