PAN Duofeng,SHEN Zhongbao,WANG Jianli,et al.Effect of Alkaloid-saline Stress on the Seed Germination and Seedling Growth of Trifolium repens[J].Northern Horticulture,2015,39(14):67-70.[doi:10.11937/bfyy.201514019]
碱性盐胁迫对白三叶种子萌发及幼苗生长的影响
- Title:
- Effect of Alkaloid-saline Stress on the Seed Germination and Seedling Growth of Trifolium repens
- 文献标志码:
- A
- 摘要:
- 以白三叶新品系‘Z005’为试材，研究了不同浓度(0、20、40、80、120、160、200 mmol/L)碱性盐溶液(NaCl、Na2SO4、NaHCO3和Na2CO3)对种子萌发及幼苗生长的影响。结果表明：低浓度胁迫(≤20 mmol/L)提高白三叶种子的萌发能力、促进幼苗生长，而高浓度(＞40 mmol/L)则表现为抑制作用。当溶液浓度大于80 mmol/L，发芽率、发芽势、发芽指数、活力指数、苗高和根长均极显著低于对照(P<0.01)。白三叶种子萌发适宜的碱性盐溶液浓度应小于94.50 mmol/L。碱性盐溶液对白三叶根生长的抑制作用强于对苗的抑制作用。
- Abstract:
- Taking Trifolium repens new strain (‘Z005’) as material，the effect of different concentration (0,20,40,80,120,160,200 mmol/L)saline-alkaloid (NaCl,Na2SO4,NaHCO3,Na2CO3)stress on the seed germination and seedling growth of Trifolium repens new strain (‘Z005’) were studied.The results showed that low concentration of saline-alkaloid stress(concentration was≤20 mmol/L) could improve seed germination ability and seedling growth of Trifolium repens，contrastly，high concentration decreased seed germination and seedling growth.When the concentration was exceed 80 mmol/L，germination rate，germination potential，germination index，vigor index，root length and shoot height were significantly lower compared with control (P<0.01). Seed of Trifolium repens could germinate under the condition that the concentration of saline-alkaloid below 94.50 mmol/L.And saline-alkaloid stress had a higher inhibition to root length than shoot height.
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备注/Memo
第一作者简介：潘多锋（1980-），男，宁夏青铜峡人，硕士，助理研究员，现主要从事牧草育种与草地生态等研究工作。E-mail：panduofeng2000@163.com.责任作者：申忠宝（1973-），男，黑龙江讷河人，硕士，研究员，现主要从事牧草育种和栽培等研究工作。E-mail：shzhbao2@126.com.基金项目：黑龙江省农业科技创新工程院级科研资助项目（2012ZD001）。