欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (28): 130-134.

所属专题： 生物技术

• 林学 园艺 园林 • 上一篇    下一篇

NaCl胁迫对八棱海棠幼苗生长及其生理指标的影响

郭艳超 王文成 李克晔 吴新海 董文琦 吴菲   

  • 收稿日期:2011-05-27 修回日期:2011-09-05 出版日期:2011-11-05 发布日期:2011-11-05
  • 基金资助:

    曹妃甸新区盐碱地耐盐植物筛选及绿化技术集成示范;耐盐性野生花卉种质资源收集、评价与生理生态研究

Effects of NaCl Stress on the Growth and Some Physiological Indexes of Malus robusta Rehd.

  • Received:2011-05-27 Revised:2011-09-05 Online:2011-11-05 Published:2011-11-05

PDF (PC)

1028

摘要：

为明确八棱海棠的耐盐特性，为其在盐碱地区的园林绿化应用提供科学依据，采用砂基培养法，研究八棱海棠幼苗在不同浓度NaCl胁迫下的生长量和部分生理指标的变化过程。结果表明：随着NaCl浓度的升高，八棱海棠的株高、茎粗、叶片含水量、叶绿素含量呈减少趋势；MDA含量和可溶性糖含量呈上升趋势；脯氨酸呈先下降后上升趋势，变化平缓。通过对外观形态的观测以及生理指标的综合分析，推断出八棱海棠的耐盐阈值、存活阈值为0.6%。

关键词: 分类评价, 分类评价

Abstract:

The study aimed to explore the salt resistant ability of Malus robusta Rehd. and provide the scientific basis for exploitation and utilization of Malus robusta Rehd. plants in saline-alkali land. The effects of different NaCl solutions on the growth and physiological indexes of Malus robusta Rehd. plants under sand-cultured were studied. The results showed that: with the increase of NaCl concentration, the shoot height, the stem diameter, the water content and the content of chlorophyll decreased continuously; MDA content and soluble sucrose increased; proline were declining at first and then increasing later, showing gently changes. The salt tolerant threshold and survival threshold of Malus robusta Rehd. plants was both deduced as 0.6% by observing visual form and analyzing physiological index.