| 胡春红，刘中华，王红星，周 琳，朱自学.外源硫胺素对防腐剂胁迫小麦幼苗生长的缓解效应[J].麦类作物学报,2014,34(4):535 |
| 外源硫胺素对防腐剂胁迫小麦幼苗生长的缓解效应 |
| Effects of Exogenous Thiamine on Alleviating the Preservative Stress of Seedling Growth of Wheat |
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| DOI：10.7606/j.issn.1009-1041.2014.04.16 |
| 中文关键词: 小麦 复合防腐剂 硫胺素 幼苗生长 |
| 英文关键词:Wheat Compound preservative Thiamine Seedling growth |
| 基金项目:国家重点实验室项目（CB2013A15）；河南省科技攻关项目（122102310368）；河南省教育厅自然科学研究计划重点项目（12A180029）。 |
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| 中文摘要: |
| 为了解硫胺素对防腐剂胁迫小麦幼苗生长的缓解效应，采用土培试验，研究了复合防腐剂（苯甲酸钠∶山梨酸钾= 2∶3，m/m）胁迫下小麦幼苗生长对不同浓度硫胺素处理的响应。结果表明，10.0 g·L-1复合防腐剂显著抑制小麦幼苗的生长，表现为出苗延迟，植株矮化，叶片叶绿素含量、可溶性蛋白含量和根系活力降低，膜脂过氧化加剧。经适宜浓度的硫胺素处理后，幼苗的上述形态和生理指标均发生良性转变，且以0.4 g·L-1硫胺素处理效果最好，说明外源硫胺素能够缓解复合防腐剂对小麦幼苗生长的胁迫毒害。 |
| 英文摘要: |
| To investigate the best concentration of thiamine on alleviating preservative damaged wheat seedling, the method of modified soil culture was performed in this study. Subsequently, the effect of different thiamine concentrations on wheat seedling under compound preservatives (sodium benzoate∶potassium sorbate = 2∶3, m/m) stress were further studied. The results showed that abnormalities of wheat seedling were observed under 10.0 g·L-1 compound preservatives treatment, mainly including seedling delayed emergence, dwarfed plants, decreased chlorophyll content and soluble protein content, root vigor, rapid peroxidation of plasma membrane. However, the morphological and physiological abnormalities of wheat seedlings could be improved with a treatment of the appropriate thiamine concentration. The best thiamine concentration (0.4 g·L-1) alleviated the preservative damage on wheat seedling to the most extent. Taken together, exogenous thiamine could decrease the damage of compound preservatives on wheat seedling, increase the resistance, and promote the growth and development of wheat seedlings, and the best concentration of thiamine is 0.4 g·L-1. |
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