提高休眠期春菜种子发芽率的研究  

Study on Improving the Germination Rate of Dormant Brassica juncea Seeds

作　　者：杨红丽[1] 胡靖锋[1] 徐学忠[1] 和江明[1] 宋爽[2] 顾雄飞[3] 

机构地区：[1]云南省农业科学院园艺作物研究所,云南昆明650205 [2]云南省农业科学院行政处,云南昆明650205 [3]云南农业大学,云南昆明650201

出　　处：《福建农业学报》2015年第6期582-585,共4页Fujian Journal of Agricultural Sciences

基　　金：云南省科技厅重点新产品开发计划(2012BB017);农业部公益性行业科研专项(201003029);云南省农业厅蔬菜新品种协作项目[云财农(2012)58号];云南省科技厅科技富民强县计划(2014EB0330);云南省科技厅国际合作项目(2014IA016)

摘　　要：为提高休眠期春菜种子的发芽率,分别采用低温预处理、不同培养温度、不同含量植物生长调节剂和过氧化氢水溶液等处理刚收获的春菜种子,以打破种子休眠期。结果表明：4℃预先处理1d对提高休眠期的春菜种子发芽率影响显著;25℃适宜春菜种子发芽,温度过高或过低都会抑制种子的发芽;30mg·L-1 GA3处理能促进休眠期春菜种子发芽;2,4-D处理休眠期春菜种子,质量浓度低者促进发芽,高者抑制发芽;0.5%-2%H2O2浸泡2h对春菜种子的发芽有促进作用。In order to improve the germination rate of dormant Brassica juncea seeds,low temperature pretreatment,different culture temperatures and different concentrations of plant growth regulators and hydrogen peroxide were used to treat the seeds of Brassica juncea just harvesting,respectively,for breaking the seed dormancy.The results showed that there was significant influence on improving germination rate of the dormant Brassica juncea seeds at 4℃pretreatment for 1day;It was appropriate for germination of Brassica juncea seeds when treated at 25℃,and the germination of seeds would be inhibited by higher or lower temperature;Among different treatments of GA3,30mg·L-1 GA3 was proved to promote germination of the dormant Brassica juncea seeds;when treated by 2,4-D,the germination of Brassica juncea seeds was accelerated by low concentration,and inhibited by high concentration.It could also promote the Brassica juncea seeds germination when using 0.5%-2.0% H2O2 soaking treated for 2h.

关 键 词：春菜种子 休眠期 发芽率 生长势 

分 类 号：S636[农业科学—蔬菜学]