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生态学杂志 ›› 2010, Vol. 29 ›› Issue (03): 467-472.

• 研究报告 • 上一篇    下一篇

菊花近缘种属植物耐盐筛选浓度的确定及耐盐性比较

管志勇1;陈素梅1;王艳艳2;陈发棣1**   

  1. 1南京农业大学园艺学院,南京 210095; 2南京都林建筑设计咨询有限公司,南京 210008
  • 出版日期:2010-03-10 发布日期:2010-03-10

Screening of salttolerance concentration and comparison of salttolerance for chrysanthemum and its related taxa.

GUAN Zhi-yong1;CHEN Su-mei1;WANG Yan-yan2;CHEN Fa-di1   

  1. 1College of Horticulture, Nanjing Agricultura,University, Nanjing 210095, China;2Nanjing Dblant Design International Limited Liability Company, Nanjing 210008, China
  • Online:2010-03-10 Published:2010-03-10

摘要: 以纪伊潮菊(Ajania shiwogiku var. kinokuniense)、牡蒿(Artemisia japonica)、黄金艾(Artemisia vulgaris)、乙立寒菊(Dendranthema indicum var.maruyamanum)为试材,研究在Hogland营养液水培条件下,添加NaCl后使之浓度分别为0、75、100、150、250、400 mmol·L-1,观察不同水平NaCl胁迫对植株外观形态的影响,以确定菊花近缘种属植物耐盐性筛选的适宜浓度,结果表明:4种植物在100、150 mmol·L-1 NaCl的盐胁迫下筛选效果良好,此浓度下物种间出现症状差异明显的时间分别是10 d以上和6 d以上;在120 mmol·L-1 NaCl胁迫下,根据外观形态结合盐胁迫对植株根系活力、丙二醛和叶绿素含量的影响,对4种植物耐盐性强弱进行比较,利用隶属函数法得出4种植物耐盐性自弱到强的顺序为:乙立寒菊<纪伊潮菊<黄金艾<牡蒿,与利用50%叶面积受害为筛选依据得出的结论一致。

关键词: 塔里木河中游, 生态位宽度, 生态位重叠, 物种, 新疆

Abstract: Taking Ajania shiwogiku var. kinokuniense, Artemisia japonica, Artemisia vulgaris, and Chrysanthemum indicum var. maruyamanum as test
plants, a hydroponic experiment was conducted to screen the appropriate concentration for salttolerance, and to compare the salttolerance of test plants. The culture medium Hogland solution was added with 0, 75, 100, 150, 250, and 400 mmol·L-1 of NaCl, and the changes of plant morphological characteristics were observed. The results showed that 100 and 150 mmol·L-1 of NaCl were the appropriate concentrations for testing salttolerance. Obvious injury symptoms appeared at 10 days and 6 days under 100 and 150 mmol·L-1 of NaCl stress, respectively. The salttolerance of the four species was evaluated in terms of root vigor, malondialdehyde and chlorophyll contents, and morphological changes under 120 mmol·L-1 of NaCl. Subordinate function value analysis showed that the salttolerance was in order of Chrysanthemum indicum var. maruyamanum<Ajania shiwogiku var. kinokuniense<Artemisia vulgaris<Artemisia japonica, being consistent with the results evaluated by the index of 50% injured leaf area.

Key words: Middle reaches of Tarim River, Niche breadth, Niche overlap, Species, Xinjiang