Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (2): 437-447.doi: 10.16420/j.issn.0513-353x.2020-0759

• Research Notes • Previous Articles     Next Articles

Comparative Analysis of Photosynthetic and Physiological Characteristics of Red-leafed‘Quanhong’and‘Xuanhong’Poplar Cultivars

CHEN Xinghao1, LIU Hanqi1, ZHANG Xinjian2, CHENG Xiangjun2, YANG Minsheng1, ZHANG Jun1,*()   

  1. 1Hebei Key Laboratory for Tree Genetic Resources and Forest Protection,Forestry College,Hebei Agricultural University,Baoding,Hebei 071000,China
    2Baoding Zhongsen Agriculture and Forestry Technology Co.,Ltd,Baoding,Hebei 071000,China
  • Received:2021-04-20 Revised:2021-09-15 Online:2022-02-25 Published:2022-02-28
  • Contact: ZHANG Jun


One-year-old seedlings of green-leafed Populus deltoides‘Zhonglin 2025’and its red leaf of bud mutation variety‘Quanhong’and‘Xuanhong’were used as experimental materials to determine their phenotypic characters,photosynthesis parameters and chlorophyll fluorescence parameters. The results showed that the plant height,ground diameter,leaf area and leaf number of‘Quanhong’and ‘Xuanhong’were significantly lower than those of‘Zhonglin 2025’,indicating that the growth and development of‘Quanhong’and‘Xuanhong’were significantly inhibited. The anthocyanin content in the leaves of‘Quanhong’and‘Xuanhong’was higher than that of‘Zhonglin 2025’,and the ratio of anthocyanin to chlorophyll content increased significantly. In different months,the net photosynthetic(Pn),stomatal conductance(Gs)and transpiration rate(Tr)of‘Zhonglin 2025’were higher,and the intercellular CO2 concentration(Ci)of the three poplar varieties were similar. The non-photochemical quenching coefficient(NPQ)of‘Quanhong’was higher and the actual photosynthetic efficiency of PSⅡ[Y(Ⅱ)]was lower,leading to more energy dissipation,lower actual light energy conversion efficiency and lower photosynthetic capacity of PSⅡ in the photosynthetic system of‘Quanhong’. The values of Fo,Fm and NPQ of‘Quanhong’were the lowest among the three poplar cultivars,while the actual photosynthetic efficiency of PSⅡ[Y(Ⅱ)]was the higher.

Key words: poplar, color-leafed cultivar, pigment, photosynthesis, physiological characteristics

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