JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2009, Vol. 33 ›› Issue (02): 39-.doi: 10.3969/j.jssn.1000-2006.2009.02.010

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Comparison of drought resistance of six hybrid tulip clones

SUN Zhiyong1, WANG Wei2, JI Kongshu1*   

  1. 1.Nanjing Forestry University, Key Laboratory of Forest Genetics and Biotechnology Ministry of Education, Nanjing 210037, China; 2.Baoding Vocational and Technical College, Baoding 071051, China
  • Online:2009-04-18 Published:2009-04-18

Abstract: Using experimental materials of oneyear old steckling from six hybrid tulip clones (NE04, NE22, NE23, NE25, NE38, NE78), the relative water content (RWC), permeability of plasma membrane, soluble protein and proline contents, activity of superoxide dismutase (SOD), and ascorbate peroxidase(APX) were analyzed under drought stress. The results showed that the permeability of plasma membrane, SOD activity, soluble protein and proline contents increased with the increase of drought stress level, by contrast, the RWC was found to decrease. The APX activity raised first, and declined continually later. Changes of these indexes varied in different clones. Drought resistance ability of each clone was evaluated by using the subordinate function. The drought resistance order of the tested materials was NE25, NE78, NE22, NE04, NE38, NE23.

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