摘要
本文以研究盐胁迫和碱胁迫对油莎豆苗期植株及根系生长的影响、探讨油莎豆对盐碱胁迫的适应特点为目的,以油莎豆种子为供试材料,将2种中性盐Na2SO4和NaCl及两种碱性盐Na2CO3和NaHCO3按1︰2的比例混合,分别设置盐胁迫(浓度为80、160、320mmol·L^(-1))和碱胁迫(浓度为40、80、120mmol·L^(-1))处理。结果表明,盐胁迫和碱胁迫均可降低油莎豆株高、植株生物量,提高根冠比,降低油莎豆的根系活力和叶绿素含量,并随着处理浓度增加胁迫作用增强。油莎豆幼苗不同部位对盐、碱胁迫的敏感程度不同,盐胁迫对地上部的影响要大于地下部,而碱胁迫对地下部的影响大于地上部。
To investigate the adaptation characteristics of Cyperus esculentus to salt-alkali stress,two neutral salts Na2SO4 and NaCl,and two basic salts Na2CO3 and NaHCO3,were mixed in the ratio of 1:2,to set salt stress(80,160,320 mmol·L^(-1))and alkali stress(40,80,120 mmol·L^(-1))respectively.The results showed that:Both of salt stress and alkali stress could reduce plant height,plant biomass,root activity and chlorophyll content,could increase root shoot ratio of Cyperus esculentus,and with the increasing of treatment concentration,the stress operation was enhanced;The sensitivity of different parts of the seedlings to salt and alkali stress was different.The effect of salt stress on the shoot was greater than that on the underground part,while the effect of alkali stress on the underground part was greater than that on the upper part.
作者
郭晨荔
郭睿
唐榕
梁培鑫
王腾飞
何皇成
刘建国
GUO Chen-li;GUO Rui;TANG Rong;LIANG Pei-xin;WANG Teng-fei;HE Huang-cheng;LIU Jian-guo(Key Laboratory of Oasis Ecology Agriculture of Xinjiang Bingtuan/Shihezi University,Shihezi 832003,Xingjiang)
出处
《绿洲农业科学与工程》
2022年第1期50-56,共7页
Oasis Agriculture Science and Engineering
基金
国家重点研发项目(2016YFC0501406)
国家大学生创新创业训练项目(202010759003)。
关键词
油莎豆
盐碱胁迫
生长特征
敏感系数
Cyperus esculentus
Saline-alkali stress
Growth characteristics
Sensitive index
