华北农学报 ›› 2010, Vol. 25 ›› Issue (3): 102-107. doi: 10.7668/hbnxb.2010.03.023

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遮荫对茄子幼苗生长和光合特性的影响

吴雪霞, 查丁石   

  1. 上海市农业科学院, 园艺研究所, 上海市设施园艺技术重点实验室, 上海 201106
  • 收稿日期:2009-12-25 出版日期:2010-06-28
  • 通讯作者: 查丁石(1966-),男,江苏张家港人,研究员,主要从事茄子育种研究。
  • 作者简介:吴雪霞(1978-),女,山东菏泽人,在读博士,主要从事茄子栽培生理和生物技术研究.
  • 基金资助:
    “十一五”国家科技支撑计划项目(2008BAD97B06)

Effects of Shading on Growth and Photosynthetic Characteristics of Eggplant Seedling

WU Xue-xia, ZHA Ding-shi   

  1. Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai 201106, China
  • Received:2009-12-25 Published:2010-06-28

摘要: 以茄子为材料,研究了遮荫处理对茄子幼苗生长和光合作用的影响。结果表明,遮荫处理增加了茄子株高,降低了茎粗、比叶重以及SPAD值;显著降低了茄子叶片的光补偿点(LCP)、光饱和点(LSP)、光饱和光合速率和表观量子效率(AQY)。全光照下,茄子的净光合速率日变化呈双峰曲线,高峰期出现在9:00和13:00,有光合"午休"现象;遮荫条件下,茄子叶片净光合速率日变化均呈单峰曲线,高峰在11:00。遮荫处理使叶片气孔导度(Gs)、蒸腾速率(Tr)、水分利用率(WUE)和气孔限制值(Ls)均下降,胞间CO2

关键词: 遮荫, 茄子, 生长, 光合特性

Abstract: Effects of shading on growth and photosynthesis were conducted in eggplant seedling.The results showed that plant height was higher,but stem diameter, specific leaf weight( SLW) and SPAD value under shading condition were lower than those of control.Light saturation point( LSP), light compensation point( LCP), photosynthetic rate at light saturation point and apparent quantum yield( AQY) significantly became lower under low light stress.The curves of diurnal variation in net photosynthetic rate( Pn) have two peaks( at 9: 00 and 11: 00),a midday depression under full sunlight; whereas under shading treatment, the curve has only one peak at 11: 00.Leaf stomata1 conductance( Gs), the transpiration rate( Tr),water use efficiency( WUE) and stomatal limitation( Ls) were decreased under shading,while intercellular CO2

Key words: Shading, Eggplant, Growth, Photosynthetic characteristics

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引用本文

吴雪霞, 查丁石. 遮荫对茄子幼苗生长和光合特性的影响[J]. 华北农学报, 2010, 25(3): 102-107. doi: 10.7668/hbnxb.2010.03.023.

WU Xue-xia, ZHA Ding-shi. Effects of Shading on Growth and Photosynthetic Characteristics of Eggplant Seedling[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(3): 102-107. doi: 10.7668/hbnxb.2010.03.023.

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