HAN Meng,ZHANG Yue-xue,PAN Duo-feng,et al.Effects of Saline-alkaloid Stress on the Seed Germination andSeedling Growth of Three Smooth Brome Varieties[J].HEILONGJIANG AGRICULTURAL SCIENCES,2012,(07):119-122.
混合盐碱胁迫对3种无芒雀麦种子萌发及幼苗生长的影响
- Title:
- Effects of Saline-alkaloid Stress on the Seed Germination andSeedling Growth of Three Smooth Brome Varieties
- 文章编号:
- 1002-2767（2012）07-0119-04
- 分类号:
- S543+.8
- 文献标志码:
- A
- 摘要:
- 为了探讨无芒雀麦种子和幼苗的耐盐碱能力，在无芒雀麦种子萌发过程中，用浓度为0、20、40、60、80、100、120 mmol·L-1的NaCl、Na2SO4、NaHCO3和Na2CO3混合液进行胁迫，研究了胁迫对3个无芒雀麦品种的种子萌发及幼苗生长的影响。结果表明：低浓度的混合胁迫处理促进无芒雀麦mancher的萌发和幼苗生长，其它2个品种均表现为抑制作用。当混合盐碱胁迫浓度小于60 mmol·L-1时3个无芒雀麦品种的发芽率、发芽指数、活力指数和幼苗生长差异不明显（P>0.05）；当浓度高于60 mmol·L-1后各个指标都急剧下降，且与对照差异极显著（p<0.01）。混合盐碱浓度大于20 mmol·L-1时抑制无芒雀麦幼苗的生长，对根的抑制作用强于对苗的抑制作用.
- Abstract:
- In order to discuss the saline-alkaloid-resistant ability of smooth brome,different concentration of saline-alkaloid liquor(0，20，40，60，80，100，120 mmol·L-1)mixed with NaCl，Na2SO4，NaHCO3 and Na2CO3 were used in smooth brome seed germination process.The effects of different concentration saline-alkaloid stress on the seed germination and seedling growth of three smooth brome varieties were studied.The results showed that low concentration of saline-alkaloid stress improved seed germination ability of mancher,and the other two varieties performing for the inhibition.When the saline-alkaloid concentration was under 60 mmol·L-1,the germination rate,germination index,vigor index and seedling growth were not significant（P>0.05）;While the saline-alkaloid concentration was exceed 60 mmol·L-1,all indexes fell sharply,and very significant difference compared to that of the control（P<0.01）.When the saline-alkaloid concentration was more than 20 mmol·L-1,the growth of seedling of three smooth brome varieties were inhibited,inhibition of root was higher than seedling inhibitory.
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备注/Memo
基金项目：国家国际科技合作资助项目（2011DFR30840-11）；黑龙江省农业科技创新工程种子创新基金资助项目（2010-10）；黑龙江省科技厅科技成果推广重点资助项目（TC10B0703）