LIN Zhihao, FENG Jianyu, GUO Yongxiang, LIAO Hong, ZHAO Jing. Effects of different levels of phosphorus availability on growth and phosphorus absorption of "Chinese Long" sequenced cucumber genotype[J]. Journal of South China Agricultural University, 2015, 36(3): 54-58. DOI: 10.7671/j.issn.1001-411X.2015.03.010
    Citation: LIN Zhihao, FENG Jianyu, GUO Yongxiang, LIAO Hong, ZHAO Jing. Effects of different levels of phosphorus availability on growth and phosphorus absorption of "Chinese Long" sequenced cucumber genotype[J]. Journal of South China Agricultural University, 2015, 36(3): 54-58. DOI: 10.7671/j.issn.1001-411X.2015.03.010

    Effects of different levels of phosphorus availability on growth and phosphorus absorption of "Chinese Long" sequenced cucumber genotype

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    • Received Date: March 16, 2014
    • Available Online: May 17, 2023
    • Objective 

      To explore the responses of "Chinese long" sequenced cucumber genotype to different phosphorus (P) availability, and to screen an optimal low-P-treatment concentration for cucumber germplasms screening for P efficiency under a hydropoic condition.

      Method 

      Hydroponic culture was used to test effects of different P availability on the growth and P absorption of "Chinese Long".

      Result and conclusion 

      The results showed that with the decrease in P availability, cucumber plants became shorter and smaller, and new leaves became smaller and old leaves became yellow. Severe P deficiency (10 and 1 μmol·L-1) significantly inhibited the cucumber plant growth, even resulting in abnormal fruits. Low P availability decreased the biomass and P uptake efficiency of "Chinese Long", but increased its ratio of root to shoot, which preferably allocated carbonhydrate to root. Furthermore, under P deficiency, "Chinese Long" also formed finer roots with a small root diameter, thus increasing the contact area with nutrients in the growth medium. The P concentration of 10-100 μmol·L-1, for example 50 μmol·L-1, can be used to screen the cucumber germplasms for P efficiency.

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