摘要
“神舟4号”搭载的凤仙花(Impatiens balsamina)种子经种植后获得SP3种子,发现SP3代子叶发生变异现象,在苗期的子叶数目和形态呈多种变化。除绝大多数为正常的2片大小相等的子叶外,还出现了少数三子叶、漏斗状子叶(杯状子叶)和联生子叶。在子叶的大小上,有的2片子叶大小基本相似,有的则差异明显。在子叶变异的植株中,有的植株叶片大小、花的形态和育性发生了变化,没有结果,不能通过有性繁殖后代。子叶的变异是遗传原因还是生理影响尚需进一步研究。
The seeds of Impatiens balsamina L. （Balsaminaceae） were carried by spacecraft Shenzhou 4 on December 30, 2004 which flew for 6 days and 19 hours. The changes in cotyledons were observed in the third generation of the plants. The experiments showed that there were differences in number, size and shape of cotyledons. Four types of cotyledons were found： dicotyledons, tricotyledons, syncotyledons and funnel-shaped cotyledons. The growth period, flowering and fertility were also observed. Whether the variations in cotyledons are caused by physiological or genetic factors must await more research.
出处
《热带亚热带植物学报》
CAS
CSCD
北大核心
2006年第3期202-206,共5页
Journal of Tropical and Subtropical Botany
基金
四川省科技厅应用基础项目(JY029-055-2)
四川省重点学科建设项目(SZD0420)资助
关键词
凤仙花科
凤仙花
航天诱变
子叶变异
Balsaminaceae
Impatiens balsamina
Space flight
Cotyledonous mutations
