浙江农业学报 ›› 2017, Vol. 29 ›› Issue (6): 917-925.DOI: 10.3969/j.issn.1004-1524.2017.06.09

• 园艺科学 • 上一篇    下一篇

十三个柑橘品种叶片光合特性研究

邱霞1, 叶霜1, 熊博1, 廖玲1, 孙国超2, 荣毅1, 罗近予1, 代琳1, 汪志辉1,2,*   

  1. 1.四川农业大学 园艺学院,四川 成都 611130;
    2.四川农业大学 果蔬研究所,四川 成都 611130
  • 收稿日期:2017-02-07 出版日期:2017-06-20 发布日期:2017-09-07
  • 通讯作者: 汪志辉,E-mail: wangzhihui_siau@126.com
  • 作者简介:邱霞(1993—),女,四川成都人,硕士研究生,从事现代果树栽培与生理研究。E-mail: qiuxia1526@hotmail.com
  • 基金资助:
    四川省教育厅项目(14CZ0002); 四川省科技厅项目(2016NZ0056)

Photosynthetic characteristics of 13 citrus cultivars

QIU Xia1, YE Shuang1, XIONG Bo1, LIAO Ling1, SUN Guochao2, RONG Yi1, LUO Jinyu1, DAI Lin1, WANG Zhihui1,2,*   

  1. 1. College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China;
    2. Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu 611130, China
  • Received:2017-02-07 Online:2017-06-20 Published:2017-09-07

摘要: 为研究不同柑橘品种光合特性,试验以6类13个柑橘品种为材料,对其瞬时光合作用参数、光响应特性、CO2响应特性和光合关键酶活性进行了测定与分析。结果表明,13个柑橘品种光合生理参数和光合酶活性存在显著差异,其光补偿点和光饱和点分别为11.99~60.00和523.88~1 155.73 μmol·m-2·s-1, CO2补偿点和CO2饱和点分别为20.01~72.02和1 364.44~1 811.29 μmol·mol-1,Rubisco、RCA和PEPC活性分别为3.74~5.34、10.97~23.83和5.06~9.39 μ IU。综合分析不同柑橘光合参数和光合酶活性得知,合江佛手、黄果柑、巴西酸橙光合能力较强,大雅柑、晚红血橙和尤力克柠檬次之,爱媛38号和红肉琯溪蜜柚相对较低。在柑橘中检测到较高活性的C4途径关键酶PEPC,其与Rubisco比值为0.95~2.26,说明在柑橘中可能存在微量的C4途径。

关键词: 柑橘, 光合作用, 光响应, CO2响应, 光合酶

Abstract: In order to study the photosynthetic characteristics of different citrus cultivars, 13 citrus varieties of 6 categories were used as test materials, and the instantaneous photosynthesis parameters, response characteristics to light, response characteristics to CO2 and photosynthetic key enzyme activities were determined and analyzed. The results showed that there were significant differences in the photosynthetic parameters and photosynthetic enzyme activities among the 13 citrus cultivars. The light compensation point and the light saturation point were between 11.99-60.00 and 523.88-1 155.73μmol·m-2·s-1, respectively; the CO2 compensation point and the CO2 saturation point were between 20.01-72.02 and 1 364.44-1 811.29 μmol·mol-1, respectively; the Rubisco, RCA and PEPC activity were respectively between 3.74-5.34, 10.97-23.83 and 5.06-9.39 μ IU, respectively. Comprehensive analysis of different citrus photosynthetic physiological parameters and photosynthetic enzyme activity showed that the photosynthetic capacity of Hejiang Bergamot, Huangguogan and Brazil Sour orange was strong; the photosynthetic capacity of Dayagan, Wanhong blood orange and Eureka lemon were the second; the photosynthetic capacity of Ehime Kashi.38 and Hongrou Guanxi pummelo were relatively worst. Higher activity of PEPC was detected in citrus, which is a key enzyme in the C4 photosynthetic pathway, and the ratio of PEPC to Rubisco was between 0.95-2.26, indicating that there may be a weak C4 photosynthetic pathway in citrus.

Key words: citrus, photosynthesis, light response, CO2 response, photosynthetic enzymes

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