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当前位置: 首页 > 文章 > 空间环境对草地早熟禾诱变效应研究Ⅰ——突变体叶片解剖结构变异观察 核农学报 2005,19 (6) 409-412+416
Position: Home > Articles > MUTAGENIC EFFECTS OF AEROSPACE ON Poa pratensis L.Ⅰ——OBSERVATION OF LEAVES ANATOMICAL VARIATION Journal of Nuclear Agricultural Sciences 2005,19 (6) 409-412+416

空间环境对草地早熟禾诱变效应研究Ⅰ——突变体叶片解剖结构变异观察

作  者：
韩蕾;孙振元;巨关升;钱永强;李银凤;彭镇华
单  位：
中国林业科学研究院林业研究所/国家林业局林木培育重点实验室
关键词：
太空环境;草地早熟禾;解剖结构
摘  要：
“神舟3号”飞船搭载草地早熟禾‘Nassu’干种子,地面种植后筛选出突变株系PM1、PM2和PM3。观察其叶片表面结构和叶肉细胞超微结构,结果表明:3个突变株系的叶片气孔密度增大,气孔面积减少,单位视野中气孔所占面积比则变化不大;叶肉细胞中叶绿体体积增大,形状变圆并移向细胞中央;PM3株系白绿相间叶片的白色部分,其叶肉细胞中叶绿体多数正在或已经消解,结构不完整。在各突变株系中淀粉粒数量却有不同程度的增加。
译  名：
MUTAGENIC EFFECTS OF AEROSPACE ON Poa pratensis L.Ⅰ——OBSERVATION OF LEAVES ANATOMICAL VARIATION
作  者：
HAN Lei SUN Zhen-yuan JU Guan-sheng QIAN Yong-qiang LI Yin-feng PENG Zhen-hua(Research Institute of Forestry,Chinese Academy of Forestry/Key Laboratory of Forest Cultivation,State Forestry Administration,Beijing,100091)
关键词：
aerospace condition;Poa pratensis L.;anatomy
摘  要：
The dry seeds of Poa pratensis L.'Nassau' were carried by "Shenzhou No.3" spaceship and three mutants were screened based on presentational characters from the treated plants and asexual reproduced them as PM_1,PM_2 and PM_3.Observation and investigation were made on the mutants in anatomical characters of the leaves.The results showed that the leaf surface structure and the ultrastructure of the mesophyllous cells changed.Compared to CK,the stoma density increased,but the stoma size decreased with the proportions of total stoma area to leaf area remained unchanged.The chloroplast concentrated to the middle of the cell with volume increase and the shape more roundness.The chloroplast of the mesophyllous cells in the white part of the green-white leaf of PM_3 were dissolving or had dissolved.The number of the starch grain also increased in these mutants.

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