西南林业大学学报Issue(2)：13-18,6.DOI:10.3969/j.issn.2095-1914.2014.02.003
生长调节物质对楸树花粉萌发及花粉管生长的影响
Effects of Plant Growth Regulating Substances on Catalpa bungei Pollen Germination and Pollen Tube Growth
摘要
Abstract
The effect of four types of plant growth regulating substances on pollen germination and pollen tube growth of different Catalpa bungei provenances was studied by in-vitro pollen cultivation in liquid media.The re-sults showed that low concentration of GA3 stimulated pollen germination and pollen tube growth,whereas the high concentration of GA3 had inhibition effect.The most suitable concentration to stimulate the pollen germination and pollen tube growth was 300 mg/L.The effect of IAA and 2,4-D varied with the C.bungei provenances,but the general law was that the low concentrations could promote but the high concentrations would inhibit the pollen ger-mination and pollen tube growth.The maximum pollen germination rate was obtained by 15 mg/L IAA concentra-tion,there was significant difference in the pollen germination rate among two provenances and the control.Regard-ing to 2,4-D,the maximum pollen germination rate was obtained by 200 mg/L concentration.When the concen-trations of both IAA and 2,4 -D were over the most suitable values,these two types of plant growth regulators would inhibit the pollen germination and pollen tube growth.NAA had an inhibition effect on the pollen germination and pollen tube growth of C.bungei at different concentrations,the higher NAA concentration was,the sronger the inhibition effect would be.关键词
楸树/植物生长调节物质/花粉萌发率/花粉管生长Key words
Catalpa bungei/plant growth regulators/pollen germination rate/pollen tube growth分类
农业科技引用本文复制引用
王改萍,朱雪晨,彭方仁,鲍林..生长调节物质对楸树花粉萌发及花粉管生长的影响[J].西南林业大学学报,2014,(2):13-18,6.基金项目
国家“十二五”科技支撑计划项目子课题（2012BAD21B03）资助；江苏省高技术项目（BG2006319）资助；江苏省普通高校研究生科研创新基金资助。 （）
