苎麻水培扦插苗的耐盐性初步研究
|
摘要
以中苎2号嫩梢水培扦插苗为材料,在不同浓度氯化钠(NaCl)处理下测定其株高、根长、生物量、叶绿素含量及叶片和根的相对电导率,以研究苎麻在盐胁迫下的耐性。结果表明:试验材料在NaCl浓度高于2.0 g/L时全部死亡;在NaCl浓度低于0.8 g/L时,苎麻植株的株高、根长、生物量及叶绿素含量均高于对照植株(未加NaCl处理);在NaCl浓度处于1.2～2.0 g/L时,苎麻植株生长受到抑制,表现为株高、根长、生物量及叶绿素含量的下降,且处理浓度越高下降幅度越大;在NaCl浓度低于2.0 g/L时,随着盐处理浓度的增加,苎麻叶片和根系的相对电导率也随之增加,尤其在处理浓度为2.0 g/L时,其与对照的差异达显著水平。研究表明,低盐处理可在一定程度上促进苎麻水培苗的生长;高盐处理致使苎麻株高、根长、生物量及叶绿素含量下降,植株生长受到抑制。
To study the tolerance of ramie( Boehmeria nivea L.) plants to Na Cl stress,hydraulic cutting seedlings of young shoots of Zhongzhu NO. 2 were used in this study. Plant height,root length,biomass,chlorophyll content and relative conductivity of leaves and roots were analyzed under different concentrations of Na Cl. The main results were as following: All of the ramie plants died when the concentration of Na Cl was higher than 2. 0 g/L; When the concentration of Na Cl was lower than 0. 8 g/L,plant height,root length,biomass,chlorophyll content of ramie plants were higher than that of the control plants( without Na Cl treatment),indicating that low concentration of salt can promote the growth of ramie plants in some extent; When the concentration is between 1. 2-2. 0 g/L,results showed that plant height,root length,biomass and chlorophyll content decreased,and the higher the treatment concentration,the greater the decline,indicating the inhibited growth of ramie plants. When the concentration of Na Cl was lower than 2. 0 g/L,the relative conductivity of ramie leaves and roots increased with the increase of salt concentration. Especially,when the treatment concentration was 2. 0 g/L,the difference was significant.
To study the tolerance of ramie( Boehmeria nivea L.) plants to Na Cl stress,hydraulic cutting seedlings of young shoots of Zhongzhu NO. 2 were used in this study. Plant height,root length,biomass,chlorophyll content and relative conductivity of leaves and roots were analyzed under different concentrations of Na Cl. The main results were as following: All of the ramie plants died when the concentration of Na Cl was higher than 2. 0 g/L; When the concentration of Na Cl was lower than 0. 8 g/L,plant height,root length,biomass,chlorophyll content of ramie plants were higher than that of the control plants( without Na Cl treatment),indicating that low concentration of salt can promote the growth of ramie plants in some extent; When the concentration is between 1. 2-2. 0 g/L,results showed that plant height,root length,biomass and chlorophyll content decreased,and the higher the treatment concentration,the greater the decline,indicating the inhibited growth of ramie plants. When the concentration of Na Cl was lower than 2. 0 g/L,the relative conductivity of ramie leaves and roots increased with the increase of salt concentration. Especially,when the treatment concentration was 2. 0 g/L,the difference was significant.
引文
[1]刘莹.大庆地区土壤盐碱化成因及改良对策[J].黑龙江水利科技,2015,43(6):151-152.
[2]熊和平.麻类作物育种学[M].北京:中国农业科学技术出版社,2008.
[3]熊和平,喻春明,唐守伟,等.苎麻新品种“中苎2号”的选育[J].中国麻业科学,2010,32(2):69-72.
[4]陈继康,朱娟娟,喻春明,等.苎麻嫩梢水培育苗技术参数优化[J].中国麻业科学,2018,40(4):169-174.
[5]宁建凤,郑青松,皱献中,等.罗布麻对不同浓度盐胁迫的生理响应[J].植物学报,2010,45(6):689-697.
[6]郭瑞,李峰,周际,等.亚麻响应盐、碱胁迫的生理特征[J].植物生态学报,2016,40(1):69-79.
[7]张加强,潘凤英,廖小芳,等.红麻杂交种幼苗生长对盐胁迫的响应[J].华中农业大学学报,2011,30(5):552-557.
[8]肖宇,刘希锋,刘青松,等.河北省10个小麦主栽品种耐盐性鉴定[J].天津农业科学,2017,24(2):56-59.
[9]陈勋基,陈果,常晓春,等.玉米幼苗盐胁迫条件下的生理响应机制[J].新疆农业科学,2018,55(4):627-634.
[10]刘玉兰,陈殿元,元明浩,等.盐胁迫对小粒大豆幼苗生长发育及光合特性的影响[J].大豆科学,2017,36(6):913-920.
[11]高山,孙伟峰,李莹.水杨酸(SA)和脱落酸(ABA)对盐胁迫玉米幼苗生长的影响[J].分子植物育种,2017,15(10):4159-4164.
[12]Kim Y,Mun B G,Khan A L,et al.Regulation of reactive oxygen and nitrogen species by salicylic acid in rice plants under salinity stress conditions[J].Plos One,2018,13(3):e0192650.
[13]徐宇,肖化云,郑能建,等.植物组织中游离氨基酸在盐胁迫下响应的研究进展[J].环境科学与技术,2016,39(7):40-47.
[14]Kunmei Chen,Hongwei Li,Yaofeng Chen,et al.Ta SCL14,a novel wheat(Triticum aestivum L.)GRAS gene,regulates plant growth,photosynthesis,tolerance to photooxidative stress,and senescence[J].Journal of Genetics and Genomics,2015,42:21-32.
[2]熊和平.麻类作物育种学[M].北京:中国农业科学技术出版社,2008.
[3]熊和平,喻春明,唐守伟,等.苎麻新品种“中苎2号”的选育[J].中国麻业科学,2010,32(2):69-72.
[4]陈继康,朱娟娟,喻春明,等.苎麻嫩梢水培育苗技术参数优化[J].中国麻业科学,2018,40(4):169-174.
[5]宁建凤,郑青松,皱献中,等.罗布麻对不同浓度盐胁迫的生理响应[J].植物学报,2010,45(6):689-697.
[6]郭瑞,李峰,周际,等.亚麻响应盐、碱胁迫的生理特征[J].植物生态学报,2016,40(1):69-79.
[7]张加强,潘凤英,廖小芳,等.红麻杂交种幼苗生长对盐胁迫的响应[J].华中农业大学学报,2011,30(5):552-557.
[8]肖宇,刘希锋,刘青松,等.河北省10个小麦主栽品种耐盐性鉴定[J].天津农业科学,2017,24(2):56-59.
[9]陈勋基,陈果,常晓春,等.玉米幼苗盐胁迫条件下的生理响应机制[J].新疆农业科学,2018,55(4):627-634.
[10]刘玉兰,陈殿元,元明浩,等.盐胁迫对小粒大豆幼苗生长发育及光合特性的影响[J].大豆科学,2017,36(6):913-920.
[11]高山,孙伟峰,李莹.水杨酸(SA)和脱落酸(ABA)对盐胁迫玉米幼苗生长的影响[J].分子植物育种,2017,15(10):4159-4164.
[12]Kim Y,Mun B G,Khan A L,et al.Regulation of reactive oxygen and nitrogen species by salicylic acid in rice plants under salinity stress conditions[J].Plos One,2018,13(3):e0192650.
[13]徐宇,肖化云,郑能建,等.植物组织中游离氨基酸在盐胁迫下响应的研究进展[J].环境科学与技术,2016,39(7):40-47.
[14]Kunmei Chen,Hongwei Li,Yaofeng Chen,et al.Ta SCL14,a novel wheat(Triticum aestivum L.)GRAS gene,regulates plant growth,photosynthesis,tolerance to photooxidative stress,and senescence[J].Journal of Genetics and Genomics,2015,42:21-32.