昼夜温度对黄瓜矮壮素浸种效果的影响  

The Effect of Cucumber (Cucumis sativus L.) Seed Soaked with Chlorocholine Chloride under Different Day and Night Temperature

作　　者：高晓旭[1] 张志刚[1] 董春娟[1] 尚庆茂[1] 

机构地区：[1]中国农业科学院蔬菜花卉研究所农业部园艺作物遗传改良重点开放实验室,北京100081

出　　处：《中国蔬菜》2011年第18期41-46,共6页China Vegetables

基　　金：农业科技成果转化资金项目(2009GB23260439);"十二五"国家科技支撑计划重点项目(2011BAD12B03);中央级公益性科研院所基本科研业务费专项(2007)

摘　　要：在4个不同昼夜温度条件下研究0、500、2000、4000、7000mg·L-1矮壮素浸种对黄瓜幼苗徒长的控制作用。结果表明:昼夜温度35℃/25℃,不同浓度矮壮素浸种均不能有效控制下胚轴伸长及幼苗徒长;昼夜温度28℃/18℃或25℃/15℃,随着温度的降低,黄瓜壮苗所需的矮壮素浸种浓度相应降低,且分别以2000mg·L-1和500mg·L-1矮壮素浸种的效果最好;昼夜温度20℃/10℃,矮壮素浸种显著抑制幼苗的生长,下胚轴短缩,对照幼苗亦不徒长,说明此温度条件下不需要进行矮壮素浸种。Experiments were conducted to investigate the influence of temperature on the effect of chlorocholine chloride(CCC)controlling excessive growth of cucumber(Cucumis sativus L.)seedlings,by using 4 different day/night temperature conditions.The results showed that CCC treatments could not control the excessive growth of hypocotyls in environment condition of day/night temperature of 35 ℃/25 ℃.Under the day/night temperature of 28 ℃/18 ℃ or 25 ℃/15 ℃ environment,as the temperature decreased,the concentrations of CCC for seed soaking,which was needed for strong seedling cultivation,were reduced accordingly.The best controlling effect were gained by 2 000 mg·L-1 and 500 mg·L-1 CCC,respectively.When the day/night temperature was 20 ℃/10 ℃,the growth of seedlings were significantly inhibited by CCC treatments,and hypocotyls were shortened,while the control treatment was not spindling,thus soaking seed with CCC was unnecessary under this condition.

关 键 词：黄瓜幼苗 温度 矮壮素 下胚轴长度 

分 类 号：S642.2[农业科学—蔬菜学]