华北农学报 ›› 2007, Vol. 22 ›› Issue (2): 125-128. doi: 10.3321/j.issn:1000-7091.2007.02.030

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田间条件下核桃光合特性的研究

王红霞1, 张志华1, 王文江1, 孙红川2   

  1. 1. 河北农业大学山区研究所, 河北 保定 071001;
    2. 定州市林业局, 河北 定州 073000
  • 收稿日期:2006-10-30 出版日期:2007-04-28
  • 通讯作者: 张志华(1957-),男,河北玉田人,研究员,博士生导师,主要从事核桃生理和育种的研究。
  • 作者简介:王红霞(1976-),女,河北藁城人,博士,主要从事果树生理与分子生物学方面的研究。
  • 基金资助:
    河北省自然科学基金资助项目(303228);“十一五”国家科技支撑计划项目(2006BAD18B02)

Studies on Photosynthetic Characteristics of English-walnut in the Field

WANG Hong-xia1, ZHANG Zhi-hua1, WANG Wen-jiang1, SUN Hong-chuan2   

  1. 1. Mountainous Areas Research Institute, Hebei Agricultural University, Baoding 071001, China;
    2. Forestry Bureau of Dingzhou, Dingzhou 073000, China
  • Received:2006-10-30 Published:2007-04-28

摘要: 以普通核桃品种清香为主要试材,利用CI-301PS便携式光合作用测定仪系统,在田间条件下,研究了核桃的光合特性。结果表明:核桃光饱和点为1610μmol/(m2·s)左右,光补偿点为40μmol/(m2·s)左右,光合最适温度为27℃;核桃的光合日变化为双峰曲线,有明显的“光合午休”现象;核桃光合季节变化为单峰曲线,最高峰出现在5月中旬。影响核桃光合日变化的主要因子依次是胞间CO2浓度、叶温、气孔导度、光合有效辐射和蒸腾速率;不同品种间净光合速率有明显差异。

关键词: 核桃, 光饱和点, 光补偿点, 日变化, 季节变化, 影响因子

Abstract: Studies were carried out on photosynthetic characteristics of English-walnut using a portable infrared gas analyser (CI-301PS). The results indicated that the light compensation and light saturation points of English-walnut were 40 and 1610 μmol/(m2·s) respectively. The optimum temperature of Pn was at 27℃. The curve of diurnal variation of English-walnut showed two peaks, and there was obvious "midday rest". Single peaks appeared in the curve of seasonal variation of Pn of English-walnut, with the peak occurring in May. The diurnal change of Pn in English-walnut was influenced by intercellular CO2 concentration, leaf temperature, stomata conductance, photosynthetic available radiation, and transpiration rate. There were significant differences in Pn of English-walnut cultivars.

Key words: English-walnut, Light saturation point, Light compensation point, Diurnal variation, Seasonal variation, Affecting factor

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引用本文

王红霞, 张志华, 王文江, 孙红川. 田间条件下核桃光合特性的研究[J]. 华北农学报, 2007, 22(2): 125-128. doi: 10.3321/j.issn:1000-7091.2007.02.030.

WANG Hong-xia, ZHANG Zhi-hua, WANG Wen-jiang, SUN Hong-chuan. Studies on Photosynthetic Characteristics of English-walnut in the Field[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(2): 125-128. doi: 10.3321/j.issn:1000-7091.2007.02.030.

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