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当前位置: 首页 > 文章 > 混合盐碱胁迫对帚用高粱萌发及苗期生长的影响 干旱地区农业研究 2008,26 (4) 148-151
Position: Home > Articles > Effects of complex alkali-saline stress on germination and seedling growth of broom sorghum(sorghum bicolor(L.) Moench) Agricultural Research in the Arid Areas 2008,26 (4) 148-151

混合盐碱胁迫对帚用高粱萌发及苗期生长的影响

作  者：
迟春明;王志春;李彬
单  位：
中国科学院东北地理与农业生态研究所
关键词：
混合盐碱胁迫;帚用高粱;萌发;幼苗;渗透胁迫;离子毒害
摘  要：
将NaHCO3和Na2CO3等摩尔混合,NaHCO3、Na2CO3、NaCl等摩尔混合分别得到250 mmol/L的混合溶液T1和T2,对帚用高粱的种子及幼苗进行混合盐碱胁迫处理。结果表明:混合盐碱胁迫导致帚用高粱种子发芽率降低,幼苗相对生长率减小,叶片电解质外渗率提高,可溶性糖含量增加,叶绿素含量减少;碱性盐混合引起的盐碱胁迫(T1)对帚用高粱种子萌发和幼苗生长的抑制作用明显强于中性盐和碱性盐混合引起的盐碱胁迫(T2);渗透胁迫和离子毒害是引起抑制作用的主要原因。
译  名：
Effects of complex alkali-saline stress on germination and seedling growth of broom sorghum(sorghum bicolor(L.) Moench)
作  者：
CHI Chun-ming1,2,WANG Zhi-chun1,LI Bin1,2 (1.Northeast Institute of Geography and Agricultural Ecology,CAS,Changchun 130012;2.Graduate School,CAS,Beijing 100049,China)
关键词：
complex alkali-salt mixed stress;broom sorghum;germination;seedlings;osmotic stress;ion toxicity
摘  要：
Mixture of NaHCO3 and Na2CO3 in the ratio of 1∶1(molar) was used as the first treatment(T1),and NaHCO3,Na2CO3 and NaCl were mixed in the ratio of 1∶1∶1(molar) as the second treatment(T2) to obtain complex alkali-saline stress.The total concentrations of both abovementioned two treatment solutions are 250 mmol/L.The Results show that complex alkali-saline stress not only significantly inhibited the germination of broom sorghum seeds,seedling growth and relative growth rate(RGR) of broom sorghum seedlings but also enhanced the rate of electrolyte leakage and soluble sugars content,and reduced the chlorophyll content of leaves.And effects of complex alkali-saline stress caused by mixing NaHCO3 and Na2CO3 on germination of broom seeds and seedling growth of broom sorghum were significant greater than those of complex alkali-saline stress caused by mixing NaHCO3,Na2CO3 and NaCl.

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