不同种类盐胁迫对绿豆种子萌发及幼苗生长的影响
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摘要
通过在水琼脂中加入不同浓度的NaCl、Na_2SO_4、Na_2CO_3、NaHCO_3、NaCl+Na_2SO_4、Na_2CO_3+NaHCO_3、NaCl+Na_2SO_4+Na_2CO_3+NaHCO_3来模拟盐胁迫对绿豆种子进行胁迫处理。测定绿豆种子的发芽率、发芽势、发芽指数、相对盐害率以及根长、芽长、根重、芽重、根冠比,来研究不同盐胁迫对绿豆种子萌发及幼苗生长的影响。结果表明:不同种类的盐胁迫处理对绿豆种子的发芽率均有不同程度的抑制作用,种子的发芽率随着Na+浓度的增加均呈现不同程度的下降趋势;在不同种类的盐胁迫下,随着Na+浓度的增加绿豆种子的发芽势、发芽指数均呈现出逐渐降低的趋势,而相对盐害率呈现逐渐增加的趋势;不同种类的盐胁迫对绿豆幼苗的生长具有明显的抑制作用,随着Na+浓度的增大抑制作用逐渐增强,但不同种类的盐对幼苗生长的抑制作用有差异。不同种类的盐在相同Na+浓度的胁迫下对绿豆萌发和幼苗生长的伤害程度Na_2SO_4 To study the influence of different salt stress treats on germination and seedling growth of mung bean seed,germination percentage,germination potential,germination index,relative salt damage rate,root length,bud length,root weight,bud weight,root bud ratio of mung bean seed with different salt stress treats at water agar were determined,these salt stress were modulated by different concentrations:NaCl、Na_2SO_4、Na_2CO_3、NaHCO_3、NaCl+Na_2SO_4、Na_2CO_3+NaHCO_3、NaCI+Na_2SO_4+Na_2CO_3+NaHCO_3.The results showed that different salt stress had different inhibition to germination of mung bean seed,germination rate showed the decline trend to different degrees with the increase of Na+concentration,as well as germination potential and germination index,in contrary,the relative salt damage rate showed a trend of gradual increase with the increase of Na+concentration. Different salt stress treats had obvious inhibition and the inhibition effect increase with the increase of Na+concentration,but different kinds of salt had different inhibiting effect of seedling growth. The damage degree of mung bean seed and seedling growth under different salts and same Na+concentration was:Na_2SO_4
引文
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[16]刘炳响,王志刚,杨敏生,等.模拟盐胁迫对白榆种子发芽、出苗及幼苗生长的影响[J].草业学报,2012,21(5):39-46.
[2] Munns R. Compartivephysiolgy of salt and water stress[J].Plant,Cell and Environment,2002,25:239-250.
[3]全国土壤普查办公室.中国土壤[M].北京:中国农业出版社,1998.
[4]项玉英,杨祥田,张光华.设施栽培土壤次生盐渍化的调查及防治对策[J].浙江农业科学,2006(1):17-19.
[5]郑慧莹,李建东.松嫩平原盐生植物与盐碱化草地的恢复[M].北京:科学出版社,1999.
[6] AI-Karaki C N. Germination,sodium,and potassium concentrations of Barley seeds as influenced by salinity[J].Journal of Plant Nutrition,2001,24:211-522.
[7]胡友军,胡标,贾双双,等. Na2CO3和NaHCO3混合盐胁迫对乌塌菜种子发芽特性的影响[J].安徽科技学院学报,2017(6):39-44.
[8]张海均,贾冬英,姚开.绿豆的营养与保健功能研究进展[J].食品与发酵科技,2012,48(1):7-10.
[9]陈春旭,曹书娟,姜梦诗,等.低氧胁迫对不同品种发芽糙米GABA含量及生理指标变化的影响[J].安徽科技学院学报,2017(3):32-37.
[10]胡晋.种子生物学[M].北京:高等教育出版社,2006.
[11]孟繁昊,王聪,徐寿军.盐胁迫对植物的影响及植物耐盐机理研究进展[J].内蒙古民族大学学报,2014(3):315-318.
[12]王玉萍,董雯,张鑫,等.水杨酸对盐胁迫下花椰菜种子萌发及幼苗生理特性的影响[J].草业学报,2012,21(1):213-219.
[13]殷丽华,徐鹏,柯希望,等.混合盐碱胁迫对绿豆种子萌发与幼苗生长发育的影响[J].黑龙江八一农垦大学学报,2015,27(5):40-43.
[14]张秀玲.盐胁迫对绿豆种子萌发的影响[J].北方园艺,2008(4):52-53.
[15]卢艳敏,苏长青,李会芬.不同盐胁迫对白三叶种子萌发及幼苗生长的影响[J].草业学报,2013,22(4):123-129.
[16]刘炳响,王志刚,杨敏生,等.模拟盐胁迫对白榆种子发芽、出苗及幼苗生长的影响[J].草业学报,2012,21(5):39-46.