植物生长调节剂对降香黄檀种子发芽及幼苗生长的影响  

Effects of plant growth regulators on seed germination and seedling growth of Dalbergia odorfiera Chen

作　　者：俞建妹[1] 李付伸 刘晓璐[1] 王凌晖[1] 周妍[1] 李桂娥[1] 陈钰婵[1] 何菁[1] 

机构地区：[1]广西大学林学院,南宁530005 [2]广西国营维都林场,广西来宾546100

出　　处：《广西农业科学》2010年第7期649-652,共4页Guangxi Agricultural Sciences

基　　金：广西"十一五"林业科学研究项目(林科字[2007]第23号);广西大学博士启动基金项目;广西大学校级创新实践课题项目

摘　　要：为提高降香黄檀种子萌发率及加快苗木生长速度,进行了不同植物生长调节剂及其浓度对降香黄檀种子浸种发芽及幼苗生长的影响试验。结果表明:经过植物生长调节剂GA3、6-BA、IBA各种浓度分别处理后,提高了降香黄檀种子的发芽率、发芽势,但开始发芽的天数没有缩短,其中50 mg/L GA3对提高发芽率效果最好,80 mg/L 6-BA对提高发芽势效果最好;GA3、6-BA各种浓度对发芽指数有促进作用,但50、80 mg/L IBA对发芽指数起到降低作用。PP333、6-BA、GA3、NAA、IAA各种浓度对降香黄檀苗木苗高、地茎生长均有一定促进作用。PP333能阻碍苗木正常高生长,但对地茎生长有很好的促进作用。The present experiment has been conducted to study the effects of different kinds and concentrations of plant growth regulators（GA3,6-BA,IBA） on seed germination and seedling growth of Dalbergia odorfiera Chen in order to improve its seed germination rate and seedling growth.The results showed that seed germination rate and germination energy of Dalbergia odorfiera Chen treated with plant growth regulators（GA3,6-BA,IBA） were greatly improved,but the pre-ger-mination was not affected.The treatment GA3（50 mg/L） showed the best effects on the improvement of germination rate,while the treatment 6-BA（80 mg/L） showed the best effects on improvement of seed germination energy.Different concentrations of GA3 and 6-BA could promote seed germination index,but treatment IBA（50 and 80 mg/L） played contrary roles.Different concentrations of PP333,6-BA,GA3,NAA and IAA promoted plant height and growth of ground stem of Dalbergia odorfiera Chen seedling.PP333 restrained normal growth of seedling height and enhanced the diameter of basal part.

关 键 词：植物生长调节剂 降香黄檀 种子发芽 幼苗生长 

分 类 号：S482.8[农业科学—农药学]