苑学亮,杨春蕾,周建斌.水分胁迫下不同化学物质浸种对小麦发芽及幼苗生长的影响[J].干旱地区农业研究,2009,27(3):184~187
水分胁迫下不同化学物质浸种对小麦发芽及幼苗生长的影响
Effects of soaking seeds with different chemical substances on wheat germination and seedling growth under water stress
  
DOI：10.7606/j.issn.1000-7601.2009.03.34
中文关键词:  水分胁迫  化学物质浸种  小麦发芽  幼苗生长
英文关键词:water stress  soaking seeds with chemical substance  germination of wheat seed  seedling growth
基金项目:国家高技术研究发展计划(2006AA100202)； 西北农林科技大学2006年拔尖人才支持计划
作者单位
苑学亮 College of Resources and Environment Northwest A ＆ F University，Yangling， Shaanxi 712100， China 
杨春蕾 College of Resources and Environment Northwest A ＆ F University，Yangling， Shaanxi 712100， China 
周建斌 College of Resources and Environment Northwest A ＆ F University，Yangling， Shaanxi 712100， China 
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中文摘要:
      室内用PEG6000模拟干旱胁迫培养实验研究了不同水分条件下不同化学物质浸种对小麦种子发芽及幼苗生长的影响。结果表明:GA浸种显著地提高了小麦的发芽势、发芽指数和苗高,MnSO4及含有MnSO4的化学物质浸种降低了其发芽率和发芽指数。PP333和MnSO4单独浸种显著提高了小麦的根系干重,但二者的混合处理的小麦根系干重却有所降低。在水分胁迫情况下,用化学物质浸种可以有效地防止水分不足对苗高的影响。GA+MnMnSO4处理的小麦在水分胁迫后,根系干重及干物质累积量有明显的提高,说明在水分胁迫条件下,利用GA+Mn-MnSO4处理具有促进根系生长,培育小麦壮苗的突出作用。
英文摘要:
      An experiment using PEG6000 to induce water stress was carried out to evaluate the effects of seed soaked with different chemical substance on the germination and seedling growth of wheat.The results were as follows: Soaking seeds with GA increased significantly the germination potential,germination index and the height of wheat plants,but soaking seeds with MnSO4 and with chemical substances including MnSO4 reduced the germination ratio and germination index.Using PP333 or MnSO4 alone to soak seeds enhanced significantly the dry weight of wheat root,while the mixing of them depressed the dry weight of root.In case of water stress,soaking seeds with chemical substance was helpful to the growth of wheat height.The treatment of GA+MnSO4 improved the dry weight of root and shoot under water stress,indicating soaking seeds with GA+MnSO4 could play an important role in raising healthy wheat seedlings.
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