LI Hai-feng,ZHANG De-quan,DUAN Bao-zhong,et al.Effects of Urea nitrogen on Growth and Physiological Characteristics of Gentiana rigescens Franch Seedlings in the Floating System[J].Northern Horticulture,2013,37(15):162-165.
尿素态氮对滇龙胆漂浮育苗幼苗生长和生理特性的影响
- Title:
- Effects of Urea nitrogen on Growth and Physiological Characteristics of Gentiana rigescens Franch Seedlings in the Floating System
- 文章编号:
- 1001-0009(2013)15-0162-04
- Keywords:
- Gentiana rigescens Franch; floating; urea nitrogen; growth and development; physiological characteristics
- 分类号:
- Q 945
- 文献标志码:
- A
- 摘要:
- 以滇龙胆成熟种子为试材，采用漂浮育苗法及植物生理学实验方法研究了尿素态氮对浮育苗幼苗生长和生理特性的影响。结果表明：尿素态氮浓度在25~50 mg/L范围内，有利于幼苗茎叶生长；尿素态氮浓度为25 mg/L时有利于根生长；同时叶片中叶绿素含量、硝酸还原酶（NR）活性、根系活力极显著（P＜0.01）高于未施氮和其它浓度处理；与对照相比，当尿素态氮浓度为100 mg/L时，幼苗的生长受到明显抑制，叶片中绿素含量和NR活性降低，根系活力也显著下降。
- Abstract:
- Taking the mature seeds of Gentiana rigescens Franch as materials,the effects of ureanitrogen on growth and physiological characteristics of Gentiana rigescens Franch seedlings in the floating system were explored by floating nursery law and plant physiology experimental method.The results showed that it would be beneficial to the growth of seedlings stem and leaf if the urea nitrogen concentration were in the range of 25~50 mg/L,and it would be beneficial to the root growth if the urea nitrogen concentration was 25 mg/L.At the same time,leaf chlorophyll content,NR activity,and root activity were significantly higher than those not treated with urea nitrogen or treated with other concentrations ureanitrogen (P<0.01).Compared with the control group,urea nitrogen concentration of 100 mg/L would inhibit significantly seedling growth,the leaf chlorophyll content and NR activity both decreased,and the root activity also decreased significantly.
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相似文献/References:
[1]赵志莲,李海峰,张德全,等.滇龙胆种质资源筛选及离体培养的初步研究[J].北方园艺,2013,37(08):168.
ZHAO Zhi-lian,LI Hai-feng,ZHANG De-quan,et al.Preliminary Study on the Screening of Germplasm Resources and the in Vitro Propagation for Gentiana rigescens[J].Northern Horticulture,2013,37(15):168.
[2]薛美琼.西兰花漂浮育苗与湿润育苗对比研究[J].北方园艺,2014,38(16):34.
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备注/Memo
第一作者简介：李海峰（1971-），男，硕士，副教授，研究方向为药用植物资源及生物技术。E-mail:lihfzh888＠sina.com.
基金项目：大理州科技局2012年资助项目；大理学院2012年应用开发基金资助项目；大理学院2011年中青年学术带头人培养计划资助项目。
收稿日期：2013-03-07