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Position: Home > Articles > Salt Tolerance of Semi-mangrove Plant Cerbera manghas Seedlings Protection Forest Science and Technology 2010 (5) 9-13

半红树植物海檬果幼苗耐盐性研究

作  者：
邱凤英;廖宝文;蒋燚
单  位：
广西林业科学研究院;中国林业科学研究院热带林业研究所
关键词：
半红树植物;海檬果;盐胁迫;生物量;适应度分析
摘  要：
温室内对半红树植物海檬果幼苗进行7个盐度(5、8、11、14、17、20、23 g.kg-1)的胁迫处理,并对各处理下海檬果的生长量、生物量、生理指标和光合速率进行测定,结合生理指标进行适应度分析。结果表明:海檬果的苗高增量、地径增量、叶片数增量,根、径、叶干质量及总生物量随着盐度的上升均呈下降趋势;单株叶干质量和总生物量均在对照处理下值最大,且显著高于其他处理,分别为最小值的23.07倍和4.74倍。低盐处理下海檬果光合作用较强,高盐抑制海檬果光合作用;随着盐度的增大,海檬果幼苗叶绿素总量、叶绿素A含量和根活力呈下降趋势,SOD、丙二醛和游离脯氨酸呈上升趋势。生理指标适应度分析表明,海檬果可耐受盐度为8 g.kg-1的处理,在盐度≥11 g.kg-1处理下呈不适应性生长。
译  名：
Salt Tolerance of Semi-mangrove Plant Cerbera manghas Seedlings
作  者：
QIU Feng-ying1,LIAO Bao-wen2,JIANG Yi1 (1.Guangxi Forestry Academy,Nanning 530001,China;2.The Research Institute of Tropical Forestry,Chinese Academy of Forestry)
关键词：
semi-mangrove;Cerbera manghas;salt stress;biomass;adaptability analysis
摘  要：
Seedlings of Cerbera manghas were stressed by 7 salinities(5,8,11,14,17,20,and 23 g·kg-1) in the greenhouse.The increment,biomass,physiological indexes & photosynthetic rate of seedlings of Cerbera manghas were determined with different salinity treatments,combined with the adaptability analysis of physiological indexes.Result shows that height increment,stem increment,leaf increment,dry weight of root,stem & leaf and total biomass decreased with increase of the salt;leaf dry weight per plant & total biomass which are all highest with CK treatment are higher than that of other treatments,being 23.07 & 4.74 times as large as the minimum value,respectively.The photosynthesis rate is high at the low-salt treatment,and is low at the high-salt treatment;superoxide dismutase,malondialdehyde and proline increase,but total chlorophyll,chlorophyll A and root activity decrease with increase of the salt.The adaptability analysis of physiological shows that Cerbera manghas grow normally when the treatment salt is 8 g·kg-1 and growth would be inhibited when the salinity is more than or equal to 11g·kg-1.

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