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Start Over Subject Carex cinerascens

1. Leaf gas exchange characteristics and chlorophyll fluorescence of three wetland plants in response to long-term soil flooding

Creator:
Li, M., Yang, D., and Li, W.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Carex cinerascens, Hemarthria altissima, irradiance, net photosynthetic rate, photosystem 2, Phragmites australis, stomatal conductance, transpiration, and water use efficiency
Language:
Multiple languages
Description:
The effects of soil flooding on gas exchange and photosystem 2 (PS2) activity were analyzed in leaves of Phragmites australis, Carex cinerascens, and Hemarthria altissima. Pronounced decrease in net photosynthetic rate and stomatal conductance with flooding was found only in C. cinerascens. No significant changes in PS2 activity were observed in all three species which suggests that the photosynthetic apparatus was not damaged. Among the three species, H. altissima is better adapted to flooding than P. australis and C. cinerascens. and M. Li, D. Yang, W. Li.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Photosynthetic traits of Carex cinerascens in flooded and nonflooded conditions

Creator:
Li, M., Hou, G., Yang, D., Deng, G., and Li, W.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
botanika, botany, ANN, Carex cinerascens, and photosynthesis
Language:
Multiple languages
Description:
Gas exchange of Carex cinerascens was carried out in Swan Islet Wetland Reserve (29°48' N, 112°33' E). The diurnal photosynthetic course of C. cinerascens in the flooded and the nonflooded conditions were analyzed through the radial basis function (RBF) neural network approach to evaluate the influences of environmental variables on the photosynthetic activity. The inhibition of photosynthesis induced by soil flooding can be attributed to the reduced stomatal conductance (gs), the deficiency of Rubisco regeneration and decreased chlorophyll (Chl) content. As revealed by analysis of artificial neural network (ANN) models, gs was the dominant factor in determining the photosynthesis response. Weighting analysis showed that the effect of water pressure deficit (VPD) > air temperature (T) > CO2 concentration (Ca) > air humidity (RH) > photosynthetical photon flux density (PPFD) for the nonflooded model, whereas for the flooded model, the factors were ranked in the order VPD > C a > RH > PPFD > T. The different photosynthetic response of C. cinerascens found between the nonflooded and flooded conditions would be useful to evaluate the flood tolerance at plant species level. and M. Li ... [et al,.].
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public