title: [Influences of enhanced UV-B radiation and drought stress on biomass accumulation and allocation of Fagopyrum dibotrys].
abstract: OBJECTIVE
  To study the influences of enhanced UV-B radiation and drought stress on the biomass accumulation and allocation of Fagopyrum dibotrys, and so as to provide a theoretical basis for the cultivation, the protection and use of F. dibotrys.
  
  
  METHODS
  By experiment of potted plant, the biomass accumulation and allocation of F. dibotrys were measured under different drought stresses and UV-B radiations.
  
  
  RESULTS
  In conditions of adequate water, enhanced UV-B radiation significantly reduced biomass accumulation to root, biomass accumulation to leaves, total biomass accumulation and biomass allocation to root in F. dibotrys, while it could increase biomass allocation to stem. In conditions of moderate drought stress, enhanced UV-B radiation increased biomass accumulation to root, biomass accumulation to stem and biomass accumulation to root. In the conditions of severe drought stress, enhanced UV-B radiation increased biomass accumulation to root, it also could lead in a certain increase to biomass accumulation to stem. Biomass allocation to root, stem and leaves was not sensitive to enhanced UV-B radiation.
  
  
  CONCLUSIONS
  The influences of enhanced UV-B radiation in simulation and drought stress on the biomass accumulation and allocation of F. dibotrys were determined by water conditions and different apparatus. Overall, we verified that enhanced UV-B radiation would reduce the influences of biomass accumulation of F. dibotrys by drought.
authors: School of Life and Sciences, Yuanpei College, Shaoxing University, Shaoxing 312000, China. zhangyifeng_007@163.com
authors: Yifeng
authors: Y
authors: Zhang
authors: Ping
authors: P
authors: He
authors: Chunping
authors: C
authors: Zhang
mesh_terms: D018533:Biomass; D055864:Droughts; D019612:Fagopyrum / Q000378:metabolism* / Q000528:radiation effects*; D018515:Plant Leaves / Q000378:metabolism / Q000528:radiation effects; D018517:Plant Roots / Q000378:metabolism / Q000528:radiation effects; D013312:Stress, Physiological; D013997:Time Factors; D014466:Ultraviolet Rays