LU Xueli,YU Haiye,ZHAO Hongxing,et al.Effect of High and Low Temperature Stress on Root Growth and Development of Fog Grafted Seedling[J].Northern Horticulture,2016,40(08):6-10.[doi:10.11937/bfyy.201608002]
高、低温胁迫对雾培嫁接苗根系生长发育的影响
- Title:
- Effect of High and Low Temperature Stress on Root Growth and Development of Fog Grafted Seedling
- Keywords:
- high temperature stress; low temperature stress; the grafted seedling’s root; root vigor; relative conductivity
- 文献标志码:
- A
- 摘要:
- 以黄瓜嫁接苗根系为研究对象，采用雾培生根法，通过对根际进行高温与低温胁迫，分别进行了单因素试验和多因素正交实验。结果表明：高、低温胁迫对黄瓜嫁接苗根系相对电导率和根系活力影响高度显著，影响强度高于栽培方式和嫁接苗品种等因素；高温胁迫下，嫁接苗根系的根长增大，根鲜重、根体积、根直径、根系数量减小，根系相对电导率增大，根系活力下降，嫁接苗根系出现明显的徒长现象；低温胁迫下，嫁接苗根系的根长、根鲜重、根体积、根直径、根数量均明显减小，根系相对电导率增大，根系活力下降，嫁接苗根系生长发育缓慢。试验表明，高、低温胁迫都严重影响嫁接苗根系的正常生长，尤其是高温胁迫影响更明显。
- Abstract:
- Root system of cucumber grafted seedlings were used as research object,the single factor test and multi-factor orthogonal experiment were carried out through high and low temperature stress.The results showed that effect of high and low temperature stress on the relative conductivity of grafting root and root activity was highly significant，which was higher effect than cultivation mode and grafting varieties；under high temperature stress，the root length of grafted seedlings increased，but the root fresh weight，root volume，root diameter and root number decreased，root relative conductivity increased，root vigor dropped，grafted seedling’s root apparent over growth phenomenon；under low temperature stress，the root length，root fresh weight，root volume，root diameter and root number significantly decreased，root relative conductivity increased，root vigor dropped，root of grafted seedlings developed slowly.The results suggested that high and low temperature stress affect the grafted seedling’s root normal growth，especially the high temperature stress.
参考文献/References:
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备注/Memo
第一作者简介：鲁雪利（1988-），女，硕士研究生，研究方向为设施农业环境控制及节能技术。E-mail：luxueli880101@163.com.责任作者：于海业（1963-），男，博士，教授，博士生导师，现主要从事农业生物环境测控理论与技术领域等研究工作。E-mail：haiye@jlu.edu.cn.基金项目：国家高技术研究发展计划（863计划）资助项目（2012AA10A506-4;2013AA103005-04）。