环境因素对短命植物抱茎独行菜抽薹开花节律的影响  

Effects of environmental factors on bolting and flowering of ephemeral plant Lepidium perfoliatum L.

作　　者：袁军文[1] 黄代红[1] 徐栋生[1] 赵娟[1] 陈莎莎[1] 兰海燕[1] 张富春[1] 

机构地区：[1]新疆大学生命科学与技术学院新疆生物资源与基因工程重点实验室,乌鲁木齐830046

出　　处：《生态学杂志》2010年第9期1679-1684,共6页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(30860020);新疆自治区科技攻关重大专项(200731138-3);新疆生物资源基因工程重点实验室开放基金资助项目(XJDX0201-2005-03;XJDX0201-2007-03;XJDX0201-2009-06)

摘　　要：以新疆十字花科典型早春短命植物抱茎独行菜(Lepidium perfoliatum L.)为材料,分别在不同环境、不同土壤基质及不同春化时间下栽培,以探讨环境因素对抱茎独行菜抽薹开花的影响。结果表明:抱茎独行菜种子在蛭石∶珍珠岩(3∶1)中的出苗率显著高于营养土和自然生境土壤,基质对抱茎独行菜植株是否抽薹无显著影响,但影响其抽薹的早晚及结实特性;人工4℃春化对3种不同栽培环境中于阳台生长植株的抽薹有明显促进作用,而对培养室及户外环境中栽培植株是否抽薹无显著影响;抱茎独行菜抽薹开花对光照和温度的响应最明显,光照时间由短变长与苗期一定时间的低温之间的相互作用是促使抱茎独行菜抽薹开花的关键因素。Cruciferat species Lepidium perfoliatum,a typical early-spring ephemeral plant in Xinjiang desert,was planted on three types of growth substrates under different growth conditions and with various vernalization durations,aimed to study the effects of environmental factors on the bolting and flowering of L. perfoliatum. On the substrate vermiculite：perlite=3：1,the percentage of L. perfoliatum seedling emergence was significantly higher than that on nutrient soil or natural habitat soil. Growth substrate had little effects on whether bolting or not,but affected the bolting time and fecundity. Artificial vernalization at 4 ℃ promoted the bolting of the plants grown on the three substrates in closed balcony,but had no significant effects on the bolting when the substrates were placed in cultivation room or outdoor environment. The bolting and flowering of L. perfoliatum responded most remarkably to illumination and temperature. The interaction between the photoperiod changed from short to long and the certain period of low temperature at seedling stage was the key factor promoting the bolting and flowering of L. perfoliatum.

关 键 词：抱茎独行菜 抽薹开花 光周期 春化 生长基质 

分 类 号：Q948.1[生物学—植物学]