不同温度对素花党参种子萌发及幼苗生长的影响  

Effects of different temperature treatments on seed germination and seedling growth of Codonopsis pilosula Nannf. var. modesta

作　　者：武志江[1,2] 郭凤霞[2] 李瑞杰[3] 陈垣[1,3] 

机构地区：[1]甘肃省作物遗传改良与种质创新重点实验室甘肃农业大学植物生产类实验教学中心,甘肃兰州730070 [2]甘肃农业大学生命科学技术学院,甘肃兰州730070 [3]甘肃农业大学农学院,甘肃兰州730070

出　　处：《甘肃农业大学学报》2013年第1期87-90,96,共5页Journal of Gansu Agricultural University

基　　金：国家科技支撑计划(2007BAI37B03);院企合作项目(甘肃扶正党参规范化生产(GAP)基地建设研究);企业创新基金(纹党GAP基地建设和精深加工技术研究和纹党参良种繁育与规范化栽培技术研究);甘肃省干旱生境作物学重点实验室开放基金项目(No.5)

摘　　要：通过测定5、10、15、20、25、30℃恒温光照及15/25℃、20/30℃光照黑暗交替变化条件下素花党参种子萌发和幼苗生长的动态指标,探寻温度条件对素花党参种子萌发和幼苗生长的影响.结果表明,素花党参种子发芽质量随温度条件的变化而变化,不同温度条件下终发芽率变幅为1.33%～96.33%,发芽势变幅为1.33%～50.33%,发芽指数变幅为0.08%～21.52%,活力指数变幅为9.22%～53.52%;25℃、20℃光照条件下和15/25℃光照黑暗交替条件下种子发芽率均极显著高于其他处理,尤其25℃恒温光照条件下种子发芽势、发芽指数、活力指数均最高,幼苗生长最佳.说明25℃恒温光照条件为素花党参种子发芽的最适宜条件,可作为其种子发芽质量检验的参考条件.To explore the effects of different temperatures on seed germination and seedling growth of C.pilosula Nannf.var.modesta,determine the optimum temperature for seed germination and seedling growth,and provide a basis for seed quality test as well as standard culture of seedling,the dynamic indices of its seed germination and seedling growth at 5 ℃,10 ℃,15 ℃,20 ℃,25 ℃,30 ℃ with light and 15/25 ℃,20/30 ℃ fluctuating temperature were observed.The results showed that the germination quality varied with temperature.The utmost germination rate ranged from 1.33% to 96.33%,germination power ranged from 1.33% to 50.33%,germination index ranged from 0.08% to 21.52%,and vigor index ranged from 9.22% to 53.52% at different temperatures.The seed germination rates at 25 ℃ and 20 ℃ with light and 15/25 ℃ fluctuating temperature were greatly significantly higher than that of other temperatures.Especially,the germination power,germination index,and vigor index at 25 ℃ were the highest.The seedling growth at 25 ℃ was also the best.As a result,the optimum temperature for seed germination was 25 ℃,which could be used as the standard parameter for seed germination test.

关 键 词：素花党参 温度 种子发芽 幼苗生长 

分 类 号：S567.2[农业科学—中草药栽培]