Na_2CO_3对不同品种玉米种子的萌发及幼苗的影响

The Effect of Na_2CO_3 Concentration on Germination and Seedling of Different Maize Seeds

采用不同浓度Na2CO3溶液对玉米种子进行处理,通过测定发芽率、幼苗株高、根长、生物量等相关指标,探讨不同品种玉米对Na2CO3胁迫的相应情况,为筛选抗盐碱玉米品种提供参考.其结果表明:随着Na2CO3溶液浓度的升高玉米发芽率、株高、根长、生物量均逐渐降低;根冠比表现出两种情况,其中德农958、交单26和先玉335随着浓度的增加根冠比呈现先降低-升高-降低的变化趋势,而北京德农益丰29和北京德农交单20其根冠比随着浓度增加而表现为逐渐降低的变化趋势;综各项指标合得出德农958和先玉335对Na2CO3胁迫条件下各种形状表现要优于其它品种.

Maize seeds were treated with different concentrations of Na2CO3. By measuring the germination rate,seed-ling height,root length,biomass and other related indicators and to Investigate the different maize varieties to the cor-responding Na2CO3 stress,so as to provide reference for the selection of salt tolerant maize varieties. The results show：The Maize Germination rate,plant height,root length,biomass was reduced gradually with the concentration of Na2CO3 increased;Root shoot ratio showed two cases. First：The Root shoot ratio of De Nong958,Jiao Dan26 and Zheng Yu335 showed decreased-increased-decreased with the increasing concentration,while Beijing Denon Yifeng 29 and Beijing Denong Jiaodan20 indicated decreased with the increasing concentration;Integrated indicators that Denon 958 and Xianyu 335 is better than the other varieties on Na2CO3 stress conditions.