Author(s)

Lusheng Wan^1,2, Zhen Xing^1,2,3*, Xinyue Chang^1,2, Jiang Liu⁴, Guorong Zhang^1,2

¹College of Resources and Environment, Tibet Agriculture & Animal Husbandry University, Nyingchi, China.
²Tibetan Featured Flower Research and Development Center of National Flower Engineering Technology Research Center, Nyingchi, China.
³National Station for Field Observation and Research of Alpine Forest Ecosystem, Nyingchi, China.
⁴Food Science College, Tibet Agriculture & Animal Husbandry University, Nyingchi, China.

In order to study the applicability of different light response models to the photoresponse curves of four species of Chamaenerion, four species of Chamaenerion collected from Serzilla were used as test materials. Four common photosynthetic models were used to fit the photosynthetic response curve of the leaves. The results show that: 1) The effect of different photosynthetic response models on photosynthetic response curve of the genus chromasia was different. The fitted value of the correction model of right angled hyperbola was closest to the measured value, the R2 was 0.998, and RE was 0.216. 2) In terms of fitting the photosynthetic parameters, the initial quantum efficiency, light compensation point and dark respiration rate were suitable for fitting with non-right angle hyperbolic model. In terms of fitting the photosynthetic parameters, the initial quantum efficiency, light compensation point and dark respiration rate were suitable for fitting with non-right angle hyperbolic model. 3) The photosynthetic characteristics of C. angustifolium subsp. circumvagum reflect the negative response to high altitude radiation. Under strong radiation, the photosynthetic rate, apparent quantum efficiency, and light saturation point are low. On the other hand, C. conspersum has a positive response to high altitude radiation. C. angustifolium and C. latifolium has a higher light compensation point and higher light saturation point, but it is also positive for high altitude radiation. The response is only a choice of light intensity at different elevations, which also explains the distribution of C. angustifolium and C. latifolium in the salmonella with a single elevation, habitat, and slope.

Alpine Plant, Chamaenerion, Optical Response Curve, Right Angle Hyperbolic Correction Model

Wan, L. , Xing, Z. , Chang, X. , Liu, J. and Zhang, G. (2018) Research on Light Response Curve Fitting Model of Four Chamaenerion Plants on the Serzilla Mountains. American Journal of Plant Sciences, 9, 1630-1645. doi: 10.4236/ajps.2018.98118.