Dry Matter Production and Utilization of Solar Energy in One Year Old Bupleurum falcatum

Abstract

Dry matter production and solar radiation utilization were studied for Bupleurum falcatum, originated from Jeongseon, Korea and Kumamoto, Japan. The root growth of the plants from Kumamoto was more vigorous than that of the plants from Jeongseon. The former was also higher in dry matter production of aerial part and in leaf area. The utilization of solar energy in the stage around 150 days after sowing were 2.42% and 1.48% in Kumamoto and Jeongseon, respectively. The values of crop growth rate, and net assimilate rate of Kumamoto were higher than Jeongseon during whole growth except net assimilate rate during July 31 to August 15. The growth and yield of one year old plants under field condition in Jeongseon were inferior, but superior in the 1000 seed weight. Generally, the plants from Kumamoto showed higher mean values of the parameters measured than those from Jeongseon. This was interpreted to suggest the difference between the plants of geographical origin and the potential crop productivity in B. falcatum.