ZHENG Yi-qi,ZANG Guo-zhang,WANG Qing-feng.Effect of PEG Stress on Seed Germination and Seedling Growth of Tall Fescue[J].Northern Horticulture,2012,36(02):70-72.
聚乙二醇胁迫对高羊茅种子萌发和幼苗生长的影响
- Title:
- Effect of PEG Stress on Seed Germination and Seedling Growth of Tall Fescue
- 文章编号:
- 1001-0009(2012)02-0070-03
- Keywords:
- PEG stress; tall fescue; seed germination; seedling growth
- 分类号:
- S 688404+1
- 文献标志码:
- A
- 摘要:
- 采用不同浓度聚乙二醇（PEG6000）溶液，对‘星火’、‘可奇思’、‘猎狗六号’ 3个高羊茅种子的萌发情况进行研究。结果表明：3个品种在干旱胁迫下种子萌发时间并无显著差异，且在高浓度时均未发芽。低PEG浓度（5%）对‘猎狗六号’和‘星火’种子发芽有促进作用，高浓度（15%~25%）对3个品种种子的萌发都表现为抑制作用。3个品种的抗旱性顺序为‘星火’＞‘猎狗六号’＞‘可奇思’。
- Abstract:
- The seeds germination of ‘Houndog 6’,‘Cochies’,‘Starfire’ three tall fescue’s cultivars were researched under artificial drought stress by using different concentrations of polyethylene glycol (PEG6000) solution. The results showed that it had no significant difference among the time of three cultivars’ seed beginning to germinate under drought stress. But none of these three germinated at high PEG concentration. The seeds germination of ‘Houndog 6’ and ‘Starfire’ were promoted at low concentration. But at high concentration, the germination of three cultivars were all inhibited. The order of these three cultivars’ drought resistance was ‘Starfire’ >‘Houndog 6’> ‘Cochies’.
参考文献/References:
[1]王赞,李源,吴欣明,等.PEG渗透胁迫下鸭茅种子萌发特性及抗旱性鉴定[J].中国草地学报,2008,30(1):50-54.[2]韩建国,潘全山,王培.不同草坪草种蒸散量及各草种抗旱性研究[J].草业学报,2001,10(4):56-63.[3]Hydecker,Higgins W J,Cullier R L.Accelerated germination by osmotic seed treatment[J].Nature,1973,246:42-44.
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备注/Memo
第一作者简介：郑轶琦（1977-），女，博士，讲师，现主要从事草坪草种质资源与遗传育种研究工作。E-mail: botanyzyq@yahoo.com.cn。