Data Views Total Plants: 23 CSV Excel PDF , Previous12 Show all rows. Paginate rows. Click on column headings to sort table by that column Plant Part All Bulb Flower Fruit Fruit Juice Leaf Nodule Plant Seed Tissue Culture Low PPM High PPM StdDev *Reference Pisum sativum Seed -- -- * Vaccinium macrocarpon Fruit -- -- * Zea mays Flower -- -- * *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.