Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (10): 14-18.doi: 10.11924/j.issn.1000-6850.2013-2790

Special Issue: 生物技术

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Effects of Salt Stress on Physiological Indexes and Chlorophyll Fluorescence Parameters of Sycamore (Platanus orientalis L.) Seedlings

  

  • Received:2013-10-28 Revised:2013-12-31 Online:2014-04-05 Published:2014-04-05

Abstract: This paper aimed to understand the physiological mechanisms of sycamore salt resistance, for screening resistance strong sycamore tree species was of great significance. To collected three balls sycamore from Zibo Shandong Province, two balls sycamore from Gongyi Henan Province, a ball sycamore’s annual seedlings for material from Songjiang Shanghai Province, physiological indicators of plant leaves and chlorophyll fluorescence index Fo, Fm, Fv/Fm, qp changes were studied in the salt mass fraction were 0.2%, 0.4% , 0.6% . The results showed that (1) under Nacl stress, the MDA content in three kinds of sycamore seedling plants showed rising trend on the whole, but the growth of three kinds of seedlings was different, the largest increased in three balls, and a ball was far less than others. (2) In contrast, the three kinds of sycamore seedling plants had no significant changes within the SOD content, but with the increase of NaCl concentration, three kinds of sycamore seedling SOD levels were increased and the largest increase in three balls, a ball was min. (3) With the increase of NaCl concentration, three kinds of sycamore seedlings Fo all increased, Fm, Fv/Fm, qp were on the decline, and variation in three balls was the largest, two balls followed, a ball was min. Integrated indicators, the salt resistance of three kinds of sycamore seedlings strength were in turn: three balls<two balls<a ball.