Na^+胁迫对小麦种子萌发的影响及外源Ca^(2+)缓解效应研究  

Eeffect of Na^+ Salt Stress on Wheat Seed Germination and Relieve Effect of Exogenous Ca^(2+) Ions

作　　者：王红霞[1] 高芸芸 

机构地区：[1]陇东学院,甘肃西峰745000 [2]白银区强湾乡农业综合服务中心,甘肃白银730912

出　　处：《种子》2014年第10期28-31,共4页Seed

基　　金：庆阳市科技支撑项目(编号:KN201315)

摘　　要：以冬小麦品种宁麦10号、太7209为材料,研究了不同浓度Na+胁迫对种子萌发与幼苗生长的影响,探讨了外源Ca2+对盐胁迫的缓解效应。结果表明:当NaCl浓度大于0.6%时,显著抑制小麦发芽率、发芽势、根数及苗鲜重,随着盐浓度升高,宁麦10号生长受抑制率大于太7209,太7209耐盐性优于宁麦10号;外源Ca2+处理能不同程度减轻盐胁迫,敏盐品种宁麦10号对盐胁迫的缓解效应大于耐盐品种太7209。With winter wheat variety Ningmai 10,Tai 7209 as materials,studied the different concentrations of Na ＋ salt stress effect of germination and seedling growth of seed,discussed the mitigative effects of exogenous Ca2＋ on salt stress.The results show that：the wheat germination rate,germination energy,root number and fresh weight of seedling is inhibited significantly when the NaCl concentration is greater than 0.6％,along,the inhibition degree of Ningmai 10 is greater than Tai 7209 with increase of salt concentration,Tai 7209 salt tolerance is better than Ningmai 10; exogenous Ca2＋ treatment could significantly relieve salt stress,the mitigative effect of the salt sensitive varieties Ningmai 10 to salt stress is better than Tai 7209.

关 键 词：小麦 盐胁迫 种子萌发 钙离子 缓解效应 

分 类 号：S512.11[农业科学—作物学]