| 盐胁迫对大花芙蓉葵幼苗生长及生理特性的影响 |
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| 引用本文： | 骆建霞,孙博,张鸿婧,张婷.盐胁迫对大花芙蓉葵幼苗生长及生理特性的影响[J].天津农业科学,2014(8):18-21. |
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| 作者姓名： | 骆建霞 孙博 张鸿婧 张婷 |
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| 作者单位： | 天津农学院园艺园林学院,天津300384 |
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| 基金项目： | 天津农委成果转化项目（201002240） |
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| 摘 要： | 采用盆栽试验法,对大花芙蓉葵(Hibiscus grandiflorus)幼苗进行不同浓度NaCl溶液胁迫处理,以探讨其耐盐能力。对新梢生长、根系活力、叶片中丙二醛(MDA)含量、超氧化物歧化酶(SOD)和过氧化物酶(POD)活性进行了测定分析。结果表明:新梢增长量随盐浓度升高而下降,5 mg·g-1盐胁迫下的新梢相对增长量为51.52%;随盐浓度的增加,根系活力呈下降、MDA含量和POD活性呈上升、SOD活性呈先升后降趋势。综合各测定指标及植株的形态表现认为:大花芙蓉葵幼苗的耐盐能力较强,可在含盐量6mg·g-1以下的土壤中正常生长。
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| 关 键 词： | 大花芙蓉葵 盐胁迫 新梢生长 生理特性 |
Effects of Salt Stress on Growth and Physiological Characteristics of Seedlings of Hibiscus grandiflorus |
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| LUO Jian-xia,SUN Bo,ZHANG Hong-jing,ZHANG Ting.Effects of Salt Stress on Growth and Physiological Characteristics of Seedlings of Hibiscus grandiflorus[J].Tianjin Agricultural Sciences,2014(8):18-21. |
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| Authors: | LUO Jian-xia SUN Bo ZHANG Hong-jing ZHANG Ting |
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| Institution: | ( Horticultural and Landscape College, Tianjin Agricultural College, Tianjin 300384,China ) |
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| Abstract: | Seedlings of Hibiscus grandiflorus grown in pots and treated with NaCI solution in distinctive concentrations were studied to understand their salt tolerance. Shoot growth, root activity, methane dicarboxylic aldehyde （MDA） content, suproxide dismutase （SOD） and peroxidase （POD） activities in the leaves were examined after treatment. The results showed that shoot growth increment of the seedlings kept to decline following the increase of salt concentration, with 51.52% relative shoot growth increment under 5 mg·g^-1 salt treatment. With the increase of salinity, both POD activity and MDA content had a trend to increase while root activity decreased instead and SOD activities in the leaves increased at the beginning and decreased afterwards. According to the indexes determined and the investigation in the field, Hibiscus grandiflorus could be considered as a plant with stronger salt tolerance and can grow normally in the soil with 6 mg·g^-1 salinity. |
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| Keywords: | Hibiscus grand/florus salt stress shoot growth physiological characteristics |
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