NaHCO_3和Na_2CO_3胁迫对藜种子萌发的影响  

Effect of NaHCO_3 and Na_2CO_3 Stress on Seed Germination of Chenopodium album L.

作　　者：惠文森[1] 

机构地区：[1]西北民族大学生命科学与工程学院,甘肃兰州730124

出　　处：《草业与畜牧》2012年第3期1-4,共4页Pruataculture & Animal Husbandry

摘　　要：用两种钠盐不同浓度对藜种子进行了发芽试验,研究了两种钠盐胁迫对藜种子萌发的影响,探讨其耐盐性。结果表明:两种钠盐胁迫对藜种子的萌发有抑制作用,随着盐浓度的增加,种子的发芽率、发芽势、发芽指数、活力指数均呈显著下降趋势(p<0.01),盐浓度过高会抑制种子萌发,NaHCO3浓度250mmol/L、Na2CO3浓度200mmol/L时,藜种子无发芽能力。两种钠盐对藜种子发芽后的胚根及胚芽生长的抑制作用表现不同,NaHCO3对藜种子的抑制:胚根>胚芽,Na2CO3对种子的抑制:胚根<胚芽。The research used two different sodium salt with different concentrations acting on Chenopodium album L. and though sprout experiment to study the influence of two sodium salt stress to Chenopodium album L. seeds sprouting as well as to analyse its salt tolerance. The results showed that with the increase of the concentration of two salt, germination rate, germination potential, germination index and vigor index had a significant decrease and an overtopped salt concentration （NaHCO3 at 250 mmol/L, Na2CO3 at 200 mmol/L） could inhibit the seeds sprout completely. The inhibition effect of two sodium salt to radicle and germ of sprouted Chenopodium album L. was different. The inhibition effect of NaHCO3 was root 〉 bud, the inhibition effect of Na2CO3 was root 〈 bud.

关 键 词：藜 盐胁迫 发芽势 发芽率 发芽指数 活力指数 根/芽 

分 类 号：Q945.78[生物学—植物学]