赤霉素处理对紫斑牡丹种子萌发和幼苗生长的影响

编号 lyqk006428

中文标题 赤霉素处理对紫斑牡丹种子萌发和幼苗生长的影响

作者 赵小霞  武斌  梁海龙 

作者单位 临夏州林木种苗工作管理站,甘肃 临夏 731100

期刊名称 林业科技通讯 

年份 2017 

卷号 0

期号 11

栏目名称 林副产品 

中文摘要 为探讨赤霉素(GA₃)处理对紫斑牡丹(Paeonia rockii)种子萌发和幼苗生长的影响,试验以紫斑牡丹为研究对象,设置不同浓度水平的赤霉素处理(0、100、200、300、400mg/L),测定分析紫斑牡丹种子首粒生根时间、生根率、主根长度等生根指标和幼苗的枝长、叶片数、叶宽和苗高等生长指标。结果表明:赤霉素对紫斑牡丹种子的生根有显著的促进作用,不同浓度处理首粒种子的生根时间均为35d,赤霉素浓度为300 mg/L时,生根率和主根长度均为最大,分别为83.04%、4.53cm,显著高于其他处理。不同浓度赤霉素对紫斑牡丹幼苗的生长也表现出显著地促进作用,其中赤霉素浓度为300mg/L时效果最好,幼苗的枝长为1.6cm,叶片数为3.4片,叶宽达到5.9cm,苗高达到7.3cm。综合分析表明,赤霉素处理对紫斑牡丹种子萌发和幼苗生长促进效果最好的浓度为300mg/L。

关键词 紫斑牡丹  Paeonia rockii  赤霉素  种子萌发  幼苗生长  影响 

英文标题 Effect of GA₃ Treatments on Seed Germination and Seedling Growth of Paeonia rockii

英文摘要 To investigate the effects of different concentration of gibberellic acid(GA₃)treatments on seed germination and seedling growth of Paeonia rockii,with Paeonia rockii as the research object,setting a series of different concentration of GA₃(0,100,200,300,400 mg/L),the first grain rooting time,the rooting rate,length of main root and shoot length of seedling,leaf number,the width of leaf and the height of seedling of Paeonia rockii were determinated.The results showed that the effect of GA₃ on Paeonia rockii seed rooting was significant.The first seed rooting time of different concentrations treatment is 35 d,the effect of the concentration of 300 mg/L treatment is the best,the rooting rate reached 83.04%,and the root length was 4.53 cm,significantly higher than the other treatments.The treatment of different concentration of GA₃ on the growth of seedlings of Paeonia rockii showed significant effect,the treatment effect is the best when the concentration is 300 mg/L,and the seedling branch length is 1.6 cm,the number of leaves are 3.4 pieces,the leaf width reaches 5.9 cm,and the seedling height reached 7.3 cm.Comprehensive analysis shows that the best concentration of GA₃ promoting on the seed germination and seedling growth of Paeonia rockii.is 300 mg/L.

英文关键词 Paeonia rockii;gibberellins;seed germination;seedling growth;influence

起始页码 50

截止页码 52

作者简介 赵小霞(1971-),林业高级工程师,从事林业技术推广示范。

分类号 S685.11

DOI 10.13456/j.cnki.lykt.2017.11.017

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