“…According to Souza Sobrinho et al (2005), the leaf:culm ratio expresses the variations in the proportion between leaf blade and culm, which is very important for the selection of grazing-tolerant genotypes. However, in spite of reduced heritabilities of LCR, TIN and HI, the results may vary according to the population evaluated, estimation method, unit and experimental precision, without meaning that the results could be definitively extrapolated to other environments or populations (Blank et al, 2010;Borges et al, 2011).…”