Dissimilarity between Andropogon lateralis ecotypes under different defoliation frequencies and heights

ABSTRACT: Andropogon lateralis Nees is a native grass of southern Brazil and one the most frequent specie found in grasslands. The species widely distributed has high degree phenotypic plasticity, which makes it highly adaptable to different edaphoclimatic conditions management. This study aimed evaluate behavior twelve ecotypes A. lateralis, collected regions state Rio Grande do Sul cut three heights subjected two defoliation frequencies. From September February, were evaluated for total dry matter, leaf stem yields. In addition, total, vegetative reproductive tillers plant height measured. These characteristics are important selection superior genotypes terms genetic variability forage production. Total matter with agronomic importance they showed highest correlation (r = 0.77), enabling an indirect these characteristics. natural plants resulted distinct structural, morphological productive heterogeneity that allows grouping according characteristics, can be included breeding programs.