稀土元素对春菊组培苗增殖及其干物质分配的影响  

Effects of rare earth on the propagation and growth at spring chrythemum in vitro

作　　者：杜红梅[1] 张效平[1] 等 

机构地区：[1]南京农业大学园艺系，南京210095

出　　处：《上海交通大学学报（农业科学版）》2001年第2期103-104,111,共3页Journal of Shanghai Jiaotong University(Agricultural Science)

摘　　要：以花托为外植体 ,在培养基中添加 1- 10 0mg LLa(NO3) 3不影响菊花花托外植体膨大和分化成苗所需时间 ,影响外植体的分化率、增殖倍数、幼苗的根数以及根系和茎叶中干物质的积累。 1mg LLa(NO3) 3处理显著增加了外植体的增殖倍数 ,5 0 - 10 0mg LLa(NO3) 3处理显著降低了外植体的分化率和增殖倍数 ,1- 5 0mg LLa(NO3) 3处理促进外植体的生根、根系伸长以及茎叶和根系中干物质含量的积累 ,10 0mg LLa(NO3)mg/L La(NO 3) 3 was mixed into media ,and the torses were used as explants.It was found that La(NO\-3)\-3 at different concentrations did not affect time needed for explants to split ,but affect percentage of differentiation and propagation times of explants,the number of roots,and dry matter contents of stems,leaves and roots。Media with 1 mg/L La(NO\-3)\-3 dramatically increased propagation times of explants,50-100 mg/L La(NO\-3)\-3 dramatically dropped percentage of differentiation and propagation times of explants。Media with 1-50 mg/L La(NO\-3)\-3 increased the number and length of roots,and the percentages of dry matter of stems,leaves and roots,but Media with 100 mg/L La(NO\-3)\-3 produced an opposite effect.

关 键 词：La(NO3)3 春菊 组织培养 稀土元素 干物质分配 

分 类 号：S682.11[农业科学—观赏园艺]