INVESTIGADORES
ZABALA Juan Marcelo
artículos
Título:
Comportamiento germinativo y potencial forrajero de Setaria magna
Autor/es:
MARINONI L.; ZABALA J.M.; EXNER E.; PENSIERO J.F.
Revista:
BOLETÃN DE LA SOCIEDAD ARGENTINA DE BOTáNICA
Editorial:
SOCIEDAD ARGENTINA DE BOTÁNICA
Referencias:
Lugar: Córdoba; Año: 2013 vol. 48 p. 261 - 270
ISSN:
0373-580X
Resumen:
Germinative behavior and forage potential of Setaria magna (Poaceae). Setaria magnaSetaria magna (Poaceae). Setaria magna
Griseb. is an American species that grows well in damp, swampy environments either in fresh or salt
water. It is an annual, grass with vigorous plants in their natural habitat. In this study the germinative
behavior as well as the forage potential of this species were evaluated. Caryopses viability and their
germination ability at different temperature regimes were analyzed, by means of different scarification
treatments and temperatures from diverse environments and harvest times. Morphological and productive
traits in genotypes of a population in vegetative and reproductive states were evaluated in field. Results
showed that caryopses viability remained the same during the first year after harvest and then decreased.
Covered caryopses did not germinate at any of the temperatures tested, which suggests dormancy,
whereas in naked caryopses alternating temperature allowed a greater percentage and velocity of
germination. Some morphological traits differed significantly among genotypes on the vegetative state,
while no differences were found regarding reproductive state. Biomass quality varied between genotypes
and states and proved to be similar to that cited for other widely cultivated species of the same cycle. The
results obtained suggest the possibility of domestication of this species.