Open AccessATIVIDADE FITOTÓXICA DE Guettarda Uruguensis (RUBIACEAE) SOBRE A GERMINAÇÃO E CRESCIMENTO DE SEMENTES DE LACTUCA SATIVA
Author(s) -
Ana Flávia Schvabe Duarte,
Mariana Saragioto Krause,
Antonio Luiz da Costa Martins,
Marílis Dallarmi Miguel,
Obdúlio Gomes Miguel
Publication year - 2018
Publication title -
visão acadêmica
Language(s) - English
Resource type - Journals
eISSN - 1518-8361
pISSN - 1518-5192
DOI - 10.5380/acd.v18i4.56363
Subject(s) - lactuca , radicle , hypocotyl , germination , botany , rubiaceae , biology , horticulture
The study evaluates the phytotoxic activity of the ethanolic extract and its organic fractions obtained from the stem bark of the Guettarda uruguensis species Cham. & Schltdl. (Rubiaceae) on germination and seed growth of Lactuca sativa. The evaluated parameters were the rate of germination velocity, radicle and hypocotyl growth. The results obtained in the present study demonstrate that Guettarda uruguensis produces chemical compounds that act in the stimulation and inhibition of the seeds germination, the radicle growth and inhibition of the hypocotyl of the Lactuca sativa species.