欢迎访问《中国农学通报》,

中国农学通报 ›› 2016, Vol. 32 ›› Issue (16): 93-97.doi: 10.11924/j.issn.1000-6850.casb16010153

• 林学 园艺 园林 • 上一篇    下一篇

NaCl胁迫对丁香‘瓷蓝’光合作用及叶绿素荧光的影响

魏永阳1,林云弟1,巩素霞2,杨志莹1,邱玉宾1   

  1. (1潍坊市农业科学院,山东潍坊 261041;2淄博市农业科学研究院,山东淄博 255033)
  • 收稿日期:2016-01-30 修回日期:2016-05-18 接受日期:2016-04-11 出版日期:2016-06-17 发布日期:2016-06-17
  • 通讯作者: 杨志莹
  • 基金资助:
    国家林业局948项目“丁香新品种及培育技术引进”(2014-4-69);山东省农业良种工程重点课题“北美高端园林观赏植物引种筛选及产业化开发”[鲁科农字(2011)186号]。

NaCl Stress on Photosynthesis and Chlorophyll Fluorescence of Syringa ‘Wedgewood Blue’

Wei Yongyang1, Lin Yundi1, Gong Suxia2, Yang Zhiying1, Qiu Yubin1   

  1. (1Weifang Academy of Agricultural Science, Weifang Shandong 261041; 2Zibo Academy of Agricultural Science, Zibo Shandong 255033)
  • Received:2016-01-30 Revised:2016-05-18 Accepted:2016-04-11 Online:2016-06-17 Published:2016-06-17

摘要: 为研究NaCl胁迫对丁香‘瓷蓝’光合作用的影响,以‘瓷蓝’的一年生扦插苗为试材,对不同浓度NaCl胁迫下‘瓷蓝’的叶绿素含量、光合特性及叶绿素荧光参数等进行研究。结果表明:盐胁迫使得光合性能降低,并且随着盐浓度的增加,叶绿素含量、光化学猝灭系数(qP)、PSⅡ的实际光化学效率(ΦPS)和PSⅡ最大光化学量子产量(Fv/Fm)呈下降趋势。非光化学猝灭系数(NPQ)呈先增加后下降趋势。光合速率下降的主要原因为气孔限制。‘瓷蓝’的耐盐范围在0.4%以下,在盐浓度低于0.4%时会通过提高非光化学猝灭系数(NPQ)来抵抗胁迫造成的伤害,当盐浓度高于0.4%时其光合机构受损严重,产生严重光抑制。

关键词: 木霉, 木霉, 筛选, 杨树烂皮病菌, 分子鉴定

Abstract: To study NaCl stress on Syringa ‘Wedgewood Blue’ photosynthesis, we took 1-year-old seedlings of ‘Wedgewood Blue’ as test materials to study their photosynthesis, chlorophyll content and chlorophyll fluorescence under different concentrations of NaCl. The results showed that salt stress inhibited the photosynthesis. The chlorophyll content, qP, ΦPSⅡ and Fv/Fm reduced with the increase of salt concentration, NPQ increased at first and then exhibited a decline. The main reason for photosynthesis reduction was stomatal limitation. The salt tolerance range of ‘Wedgewood Blue’ was below 0.4%. When the salt concentration was below 0.4%, the plant could improve the NPQ to resist the damage. When the salt concentration was higher than 0.4%, its photosynthetic organization was severely damaged, which resulted in serious photoinhibition.

中图分类号: