Data Views Total Plants: 301 CSV Excel PDF Total Activities: 102 , Previous1..78910111213141516 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All Bark Branches Bud Bulb Essential Oil Flower Fruit Fruit Juice Inflorescence Leaf Pericarp Plant Pollen Or Spore Rhizome Root Root Bark Seed Shoot Sprout Seedling Stem Testa Tissue Culture Tuber Tuber Epidermis Pt Low PPM High PPM StdDev *Reference Pyrus communis Fruit 43.0 19700.0 3.3 * *Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.