Phytotoxic bioassays and Fingerprinting by HPLC-DAD of Eragrostis plana Nees Root Extracts – application of chemometrics

Eragrostis plana (Nees) (Tough Lovegrass) shows ability to interfere with other plants, a phenomenon known as allelopathy. This chemical interaction between plants occurs due the release of compounds into environment. Thus, phytotoxicity study was carried out E. roots collected during each season throughout year, and were extracted solvents increasing polarity. The data from bioassays analyzed by GLM PCA. In addition, fingerprint these extracts obtained HPLC-DAD. in petroleum ether winter summer showed greater on Ipomoea grandifolia germination growth. PCA chromatogram crude extract that chemically different ethyl acetate methanol. continuing this order develop new generation bio-herbicides is essential.