露蕊乌头的种子萌发及幼苗出土对不同家系和亲代处理的响应  

Responses of seed germination and seedling emergence of Aconitum gymnandrum to different genealogical and parental generation treatments

作　　者：樊宝丽[1] 马全林[1] 张德奎[1] 赵志刚[2] 安婧荣 

机构地区：[1]甘肃省荒漠化防治重点实验室甘肃省治沙研究所,甘肃兰州730070 [2]兰州大学干旱与草地生态教育部重点实验室,甘肃兰州730000 [3]甘肃省古浪县林业局,甘肃古浪733100

出　　处：《草业科学》2010年第9期97-103,共7页Pratacultural Science

基　　金：甘肃省自然科技资源共享平台建设项目(0808TTPH022;094TTPH003);国家自然科学基金青年项目(30900162)

摘　　要：对青藏高原东部亚高寒草甸退化草地及河西走廊弃耕地上常见物种露蕊乌头(Aconitum gymnandrum)的种子萌发、幼苗出土及幼苗性状进行了研究,结果表明:1)亲代进行了去雄蕊和去花瓣处理延迟了子代幼苗的出土时间,同时,处理组的种子萌发率、幼苗返青率、叶面积及地上生物量都显著降低,但出苗率显著增加,此外,这些性状受亲代处理与家系间交互作用的影响显著,表明露蕊乌头幼苗生长特性有很强的遗传变异,具有较大的选择潜力;2)即将进入繁殖期的幼苗主要性状不受家系的影响,表明母本对露蕊乌头苗期性状的影响在不同阶段并不相同。The seed germination and seedling emergence of Aconitum gymnandrum in subalpine meadow of the eastern Tibetan Plateau and in abandoned farmland of Hexi Corridor were studied.The results showed that 1） The treatment of removing petals and staments for their parents delayed days of first seedling emergence,and the correspond offspring＇s seed germination rates,seedling emergence rates,leaf area,and seedling biomass were all significantly reduced except the emergence percent,Furthermore,these traits were obviously influenced by the interactions of family and removing treatment,suggesting large genetic variations and also indicating a great selective potential.2） Parents had no effect on seeding characters before the reproductive stages,which suggested that maternal effects on seedling characters of juvenile stage for A.gymnandrum were different at different plant life stages.

关 键 词：露蕊乌头 萌发率 出苗率 遗传变异 

分 类 号：S452[农业科学—植物保护]