摘要
利用"实践八号"育种卫星搭载含水量分别为9%、11%、13%、15%、17%的紫花苜蓿(MedicagosativaL.)品种"中苜一号"种子,返回后对搭载组与对照组植株叶片显微、超微结构进行差异性分析。结果表明:显微结构各指标含水量9%和11%组表现负向变异,13%、15%、17%组表现正向变异;空间搭载对细胞海绵组织的影响明显于栅栏组织;不同含水量苜蓿搭载后细胞超微结构均出现不同程度的变化,叶绿体结构变异明显,线粒体出现明显的空洞和溢裂现象;15%搭载组淀粉粒较明显,17%搭载组淀粉粒个体大、数量多,表明空间搭载对淀粉粒的数量和个体大小的影响与搭载种子本身水分含量有关。
Seeds with different moisture contents(9%,11%,13%,15%,17%) of Medicago sativa L.cv.Zhongmu No.1 were boarded on the Shijian-8 satellite and then the microscopic and ultrastructure were observed.The results showed that spongy tissue and leaf palisade of plant after space flight were different to their control.The impact of on spongy cells was more obvious than the palisade cells;greater chloroplasts,empty and crack overflow mitochondria were observed.More starch grain were found at the samples cultured from 15 % and 17 % moisture content treatment, which was analyzed that starch grains in leaf cell was affected by the moisture content of seeds.
出处
《核农学报》
CAS
CSCD
北大核心
2009年第4期561-565,共5页
Journal of Nuclear Agricultural Sciences
基金
国家十一五科技支撑项目(2008BADB3B04)
国家航天育种工程(2006HT10)
优质专用抗逆野牛草
结缕草新品种选育(2006BAD01A19-3)
关键词
紫花苜蓿
海绵组织
显微结构
超微结构
淀粉粒
alfalfa
palisade tissue
microstructure
ultrastructure
starch grains
作者简介
冯鹏(1980-),男,内蒙古乌兰察布人,硕士,主要从事牧草育种方面研究。Tel:0471—4926909;E-mail:fenggrass@163.com
通讯作者:张蕴薇(1974-),女,内蒙古呼伦贝尔人,博士,主要从事牧草育种方面研究。Tel:010-62732255;E-mail:zywei@126.com