Photosynthetic Capacity and Chlorophyll Fluorescence

The photosynthetic capacity of the seedlings was determined every 5 days at 9.00 a.m. during the study period using a CIRAS-3 portable photosynthesis system (PP Systems, USA), according to Jia et al. [32 (link)]. Ten individually mature and fully expanded leaves were measured for each treatment. The chlorophyll fluorescence was detected before and after the treatments according to Jia et al. [31 (link)], using an Open FluorCam FC 800-O imaging fluorometer (Photon Systems Instruments), and analyzed with Fluorcam7 software (PSI, Brno, Czech Republic).

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Li D., Ding Y., Cheng L., Zhang X., Cheng S., Ye Y., Gao Y., Qin Y., Liu Z., Li C., Ma F, & Gong X. (2022). Target of rapamycin (TOR) regulates the response to low nitrogen stress via autophagy and hormone pathways in Malus hupehensis. Horticulture Research, 9, uhac143.

Publication 2022

CIRAS-3 portable photosynthesis system

Chlorophyll Fluorescence Photosynthesis Seedlings

Corresponding Organization : Northwest A&F University

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Variable analysis

independent variables

Treatment

dependent variables

Photosynthetic capacity
Chlorophyll fluorescence

control variables

Time of measurement (9.00 a.m.)
Leaf maturity and expansion
Number of leaves measured (ten per treatment)

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