Study On Shade Tolerance Of Agapanthus

This auther discussed different shading effects on the growth, biomass, photosynthesis andphysiological character of Agapanthus praeco ssp.orientalis'Big Blue', to analyze and compare thefour main points of the complex character of it.1,Different shading effects on the growth of AgapanthusIn conclusion, the height, leaf width, stem's radius etc. increased and correlated positively withthe increase of shading extent. We found that Agapanthus grew best under the 40% shadingcondition.2,Different shading effects on the biomass of AgapanthusShading effects made difference among the biomass of Agapanthus. with the increase ofshading extent, the fresh weight and dry weight of Agapanthus grow up, the SLW goes up,but theT/R goes down.3,Different shading effects on the photosynthesis character of AgapanthusAnalyzed the diurnal variation and light response curve to discuss the photosynthesis characterof Agapanthus, as the most important evidences. The curve on diurnal variation of Pn of Agapanthushas tow peaks The curve on diurnal variation of cint had two troughs such like a "W". And thetranspiration goes up when the shades rise. Found the LCP was 15μmol·m^-2.s^-1 and the LSP was1090μmol·m^-2.s^-1. Compared with other shade-adapted plant. In conclusion, Agapanthus can live ina abroad light range relatively, but not a very typical shade-adapted plant.4,Different shading effects on the physiological character of AgapanthusThe weaker the light became, the more the anthocyanin-content of Agapanthus's leaves was.Light influence the anthocyanin-content obviously, and the anthocyanin correlated positively. Inshading condition, Agapanthus products more chlorophyll to catch more photons. Both of thesoluble sugar and the amylum content grew up with the shading extent increase. So appropriateshade can make Agapanthus grow better.