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  • ISSN 1000-694X
  • 双月刊 创刊于1981年
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生物与土壤

乌兰布和沙区比拉底白刺(Nitraria billardieri)的气体交换参数及抗旱生理特性

  • 徐军 ,
  • 陈海玲 ,
  • 郝玉光 ,
  • 董礼隆 ,
  • 段娜 ,
  • 李帅 ,
  • 马迎宾 ,
  • 段瑞兵 ,
  • 刘禹廷
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  • 中国林业科学研究院 沙漠林业实验中心, 内蒙古 磴口 015200
徐军(1982-),男,内蒙古磴口人,硕士研究生,工程师,主要从事荒漠化防治及植物遗传育种研究。E-mail:xujunslzx@163.com

收稿日期: 2016-04-07

  修回日期: 2016-05-31

  网络出版日期: 2017-09-20

基金资助

中央级公益性科研院所基本科研业务费专项(CAFYBB2014QA034);国家林业局引进国际先进林业科学技术“948”项目(2011-4-27)

Gas Exchange and Drought-resistant Physiological Characteristics of Nitraria billardier Provenances in Ulan Buh Desert

  • Xu Jun ,
  • Chen Hailing ,
  • Hao Yuguang ,
  • Dong Lilong ,
  • Duan Na ,
  • Li Shuai ,
  • Ma Yingbin ,
  • Duan Ruibing ,
  • Liu Yuting
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  • Desert Forest Experimental Centre of the Chinese Academy of Forestry, Dengkou 015200, Inner Mongolia, China

Received date: 2016-04-07

  Revised date: 2016-05-31

  Online published: 2017-09-20

摘要

在乌兰布和沙区,以本地白刺为对照,对从澳大利亚引进的3个种源(代号分别为NB1、NB2和NB3)比拉底白刺(Nitraria billardieri)的光合速率日变化、光响应曲线及相对含水量、叶绿素含量、可溶性糖含量、脯氨酸含量、相对电导率等生理指标进行测定。结果表明:(1)不同种源白刺净光合速率日变化均呈"双峰"曲线,在14:00出现光合"午休"现象,且午休主要受气孔因素影响,蒸腾速率呈"单峰"曲线;(2)不同种源白刺净光合速率随光强的增加而增加,达到饱和点后净光合速率呈下降趋势;NB2具有较高的光饱和点和较低的光补偿点,说明其对光强的适应能力较强;NB1的暗呼吸速率显著高于NB2、NB3和本地白刺(P<0.05),说明NB1具有较强抵御胁迫的能力;利用综合评判法得出不同种源白刺利用光能能力的顺序为NB2 > NB1 > 本地白刺 > NB3;(3)不同种源白刺的叶绿素、脯氨酸和可溶性糖含量随种源的变化趋势相同,均是NB2显著高于NB1、NB3和本地白刺(P<0.05);NB1的丙二醛含量最高,显著高于NB2、NB3和本地白刺(P<0.05);(4)根据隶属函数值法对不同种源白刺的抗旱性进行综合评价,不同种源白刺的抗旱性顺序为NB2 > NB1 > 本地白刺 > NB3。

本文引用格式

徐军 , 陈海玲 , 郝玉光 , 董礼隆 , 段娜 , 李帅 , 马迎宾 , 段瑞兵 , 刘禹廷 . 乌兰布和沙区比拉底白刺(Nitraria billardieri)的气体交换参数及抗旱生理特性[J]. 中国沙漠, 2017 , 37(5) : 917 -924 . DOI: 10.7522/j.issn.1000-694X.2016.00073

Abstract

In the ulan buh desert, Nitraria tangutorum was used as a control,and three native provenances (named NB1, NB2 and NB3) introduced from Australia of Nitraria billardieri measured photosynthetic rate, light response curve and relative water content, chlorophyll content, soluble sugar content, proline content and relative conductivity. Results showed:(1) The diurnal changes of photosynthetic rate of different provenances showed "double peak" curve, and the photosynthetic "lunch break" phenomenon appeared at 14:00. The "lunch break" was mainly affected by stomatal factors,and the transpiration rate was "single peak" curve.(2) The net photosynthetic rate increased with the increase of light intensity, and the net photosynthetic rate decreased with the increase of saturation point. NB2 has a high light saturation point and a lower light compensation point, indicating that its ability to adapt to light intensity is strong; The dark respiration rate of NB1 was significantly higher than that of NB2, NB3 and N. tangutorum (P<0.05), which indicated that NB1 had strong ability to resist stress. Using the comprehensive evaluation method, the order of using the light energy ability of different provenances was NB2 > NB1 > N. tangutorum > NB3; (3) The contents of chlorophyll, proline and soluble sugar in different provenances were the same as those of NB2, NB3 and N. tangutorum (P<0.05);The content of MDA in NB1 was the highest, which was significantly higher than that of NB2, NB3 and N. tangutorum (P<0.05).(4) According to the membership function method, the drought resistance of different provenances was analyzed. The order of drought resistance of different provenances was NB2 > NB1 > N. tangutorum > NB3.

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