摘要
以解放钟枇杷幼果为试验材料,采用人工降温方法,研究低温胁迫下枇杷幼果超微结构的变化。结果表明:6℃、3℃低温胁迫时,解放钟果肉细胞质膜、液泡膜清晰,叶绿体、线粒体结构没有明显的变化;0℃低温处理条件下的原生质膜结构完整,少数叶绿体出现部分解体,双层膜有部分破裂现象,线粒体结构仍清晰可见;-3℃低温胁迫下,原生质膜、液胞膜均破裂,原生质体浓缩,叶绿体扭曲变形、相互融合,线粒体膜结构受损,脊消失。
Under controlled temperature conditions, the ultrastructural changes of young fruit Jiefangzhong loquat were studied. The main results are as follows： Under 6 ℃, 3 ℃ stress, plasma membrane and tunoplast could be clearly observed and chloroplasts and mituchondria did not show any significant changes. Under 0℃ stress, plasma membrane and mituchondrion structures were still in its integrity; a few chloroplasts was decomposed and their membrane structure was destroyed. Under-3 ℃ stress, both plasma membrane and tunoplast were broken; protoplasts were condonsed greatly; grana lamellace were twisted and disordered and even fused; membrane system of mituchondria was destroyed and cristae disappeared.
出处
《莆田学院学报》
2008年第2期52-55,共4页
Journal of putian University
基金
国家自然科学基金资助项目(30571292)
关键词
低温胁迫
枇杷
解放钟
幼果
细胞超微结构
low temperature stress
loquat
Jiefangzhong
young firuit cell ultrastructure
