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中国农学通报

中国农学通报 ›› 2024, Vol. 40 ›› Issue (4): 61-66.doi: 10.11924/j.issn.1000-6850.casb2023-0125

• 林学·园艺·园林 • 上一篇    下一篇

6个猕猴桃品种的光合特性分析

董丽娟(), 孙阳阳(), 张继亮, 张春香   

  1. 泰安市泰山林业科学研究院，山东泰安 271000
  • 收稿日期:2023-02-21 修回日期:2023-10-25 出版日期:2024-02-05 发布日期:2024-01-29
  • 通讯作者:
    孙阳阳，女，1991年出生，山东茌平人，工程师，从事果树育种及栽培工作。通信地址：271000 山东省泰安市罗汉崖路1号 泰安市泰山林业科学研究院，E-mail：。
  • 作者简介:

    董丽娟，女，1992年出生，山东肥城人，工程师，硕士，从事果树育种及栽培工作。通信地址：271000 山东省泰安市罗汉崖路1号 泰安市泰山林业科学研究院，E-mail：。

  • 基金资助:
    2018年泰安市农业良种工程项目“猕猴桃种质资源汇集与优良品种选育”

Analysis of Photosynthetic Characteristics of Six Kiwifruit Varieties

DONG Lijuan(), SUN Yangyang(), ZHANG Jiliang, ZHANG Chunxiang   

  1. Taishan Academy of Forestry Sciences of Tai’an City, Tai’an, Shandong 271000
  • Received:2023-02-21 Revised:2023-10-25 Published-:2024-02-05 Online:2024-01-29

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摘要：

为筛选优良猕猴桃品种，以2个泰安市本地主栽品种和4个引进品种为试验材料，测定叶片相关生理指标，使用便携式光合作用测定系统测定6个猕猴桃品种的光合日变化、光合作用光响应(Pn-PAR)，分析净光合速率(Pn)、气孔导度(Gs)、胞间CO2浓度(Ci)、蒸腾速率(Tr)之间的相关性。结果表明，‘徐香’光适应范围为最高，其表观量子效率为0.067，光饱和点为1632 μmol/(m2·s)，光饱和点与光补偿点差值为1600 μmol/(m2·s)。‘泰山1号’净光合速率最大为18.45 μmol/(m2·s)，光能利用效率最高达到1.26%，均是6个猕猴桃品种中的最高值。综合分析，‘徐香’和‘泰山1号’光合特性最好。以净光合速率、蒸腾速率、气孔导度、胞间CO2浓度作为变量进行相关性分析，发现气孔导度和蒸腾速率对猕猴桃净光合速率的影响呈极显著正相关，胞间CO2浓度和净光合速率呈现显著负相关。

关键词: 猕猴挑, 光合特性, Pn-PAR响应, 光合日变化, 相关性, 光能利用率

Abstract:

In order to provide a reference basis for screening excellent kiwifruit varieties, two local main varieties and four introduced varieties in Tai’an city were used as experimental materials to measure the physiological indexes related to leaves. The diurnal variation of photosynthesis and photosynthetic light response (Pn-PAR) of six kiwifruit varieties were measured using portable photosynthesis measurement system, and the correlation between net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentration (Ci) and transpiration rate (Tr) was analyzed. The results showed that ‘Xuxiang’ had the highest light adaptation range, its apparent photosynthetic quantum yield was 0.067, and the light saturation point was 1632 μmol/(m2·s), the difference between light saturation point and light compensation point was 1600 μmol/(m2·s). The maximum net photosynthetic rate of ‘Taishan No.1’ was 18.45 μmol/(m2·s), the highest light use efficiency was 1.26%, which was the highest among the six kiwifruit varieties. According to comprehensive analysis, ‘Xuxiang’ and ‘Taishan No.1’ had the best photosynthetic characteristics. Correlation analysis was conducted with net photosynthetic rate, transpiration rate, stomatal conductance and intercellular CO2 concentration as variables. It was found that stomatal conductance and transpiration rate had a significant positive correlation with net photosynthetic rate of kiwifruit, while intercellular CO2 concentration and net photosynthetic rate had a significant negative correlation.

Key words: kiwifruit, photosynthetic characteristics, Pn-PAR response, diurnal variation of photosynthesis, correlation, light use efficiency