Ecophysiological Characteristics of Herbaceous Peony(Paeoniaceae) Da Fugui
The diurnal changes in photosynthetic characteristics of herbaceous poeny(Paeonia lactiflora Pall.,Paeoniaceae) Da Fugui were studied by the portable photosynthesis system (LI-6400).The relationship between the net photosynthesis rate(Pn) & transpiration ratefTr) and environmental & physiological factors were studied. The result showed that Pn fit the quadratic equation curve with photosynthetically active radiation(PAR), air temperature(Ta), leaf temperature(TI)and relative humidity (RH) , respectively, otherwise, the relationship between Tr and PAR, Ta , Tl as well as RH respectively was linear. Multiple regression analysis showed that the most important factors which affected Pn &Tr were PAR together with RH.The light saturation point(LSP) of Da Fugui is about 1300μmol· md-2s-1, and feasible temperature for this cultivar is below 28℃.Pn would reach the max of the day when RH round about 60％. Quadratic equation can be fitted between Pn and stomatal conductance (Gs), and Linear equation can be fitted among Pn and intercellular CO2 concentration(Ci), Tr and Gs, Tr and Ci, respectively.
herbaceous peony Da Fugui net photosynthesis rate transpiration rate ecophysiological factors
Li Cheng-zhong Kong Fen Sun Yan Feng Li-guo Tao Jun
College of Horticulture and Plant Protection Yangzhou University Department of Landscape Architectur College of Horticulture and Plant Protection Yangzhou University Department of Landscape Architecture and Horticulture Yangzhou Vocational College of Environment and
国际会议
2009 Academic Conference on Horticulture Science and Technology(2009园艺科学与技术学术会议 CHST 2009)
北京
英文
63-66
2009-12-12（万方平台首次上网日期，不代表论文的发表时间）