Varietal differences in rate of carbohydrate accumulation for tall fescue

摘要

Total non-structural carbohydrates (TNC) accumulate during daylight because photosynthesis produces more TNC than are metabolized for plant growth and maintenance.The net balance of leaf photosynthesis,respiration, and carbohydrate export produces a diurnal variation in TNC such that minimum concentrations occur in early morning and maximum in late afternoon.The objectives were to determine variability of TNC concentrations among cultivars,and to investigate daily rates of carbohydrate accumulation in tall fescue ( Lolium arundinaceum (Schreb.)S.J.Darbyshire=Festuca arundinacea Schreb.).