BALZARINI MONICA GRACIELA
Artículos
Título:
Analysis of flowering dynamics heritability in the perennial warm-season grass Paspalum dilatatum
Autor/es:
GONZÁLEZ BARRIOS, P. ; SPERANZA, P. ; GLISON, N. ; PICCARDI, M.; BALZARINI, M.; GUTIÉRREZ, L.
Revista:
Grass and Forage Science
Editorial:
John Wiley & Sons Ltd
Resumen:
nderstanding the flowering cycles of perennial warm-season grass species may be very important to the design of management practices and breeding. However, developmental dynamics are not well understood. As most plant traits associated with flowering dynamics do not follow a normal distribution, the use of general linear models to describe and compare these variables might be misleading. The aims of this study were (i) to find a methodology to compare panicle accumulation curves and (ii) to estimate heritabilities for flowering curve attributes. Panicle counts were recorded during a complete flowering cycle on a diverse collection of dallisgrass (Paspalum dilatatum). We compared the efficiency of different linear mixed models based on whole plot or individual plant data; then, we adjusted nonlinear regression curves for individual plants to estimate several curve attributes and compared this approach to the area under the curve. Finally, we calculated the broad-sense heritabilities of