出版社：Faculdade de Biociências, Pontifícia Universidade Católica do Rio Grande do Sul
摘要：Morphological and agronomic variability in Bromus auleticus (“cevadilha vacariana”) populations
This work was aimed to evaluate the morphological and agronomic variability and also to measure
the phenotypic relationships of eight Bromus auleticus Trinius (“cevadilha vacariana”) populations
collected in Rio Grande do Sul. The populations were collected in Santana do Livramento (A5, A6,
A23, A26), Quaraí (A27), Uruguaiana (A7) and Júlio de Castilhos (A17, A8). The plants were established
individually, with replications ranging from four to ten plants by population and were evaluated during
two years. There was no significant differences in the production of dry mass among the populations,
which varied from 106,8 to 148,7 g DM/plant. The characters which presented a higher variability were
height at the flowering, length of panicles, number of ramifications by panicle, number of anthecium by
spikelet, leaf pubescence, acid detergent fiber (ADF), neutral detergent fiber (NDF), and crude protein
(CP). The temporal variation was found for the basal area level, height, dry mass, CP, ADF and NDF.
The A5 population showed the smallest ADF (25,7%) and highest CP (20,5%). The populations A8 and
A17 presented leaves with the smallest pubescence and only the A8 presented rhizomes.
关键词：Bromus auleticus, chemical composition, morphology.
