Tese
Arranjo de plantas e seus efeitos na produtividade de grãos e teor de óleo em canola
Fecha
2011-01-20Registro en:
KRUGER, Cleusa Adriane Menegassi Bianchi. Plants arrangement and its effects on grain yield and oil content in canola. 2011. 89 f. Tese (Doutorado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2011.
Autor
Kruger, Cleusa Adriane Menegassi Bianchi
Institución
Resumen
The adjustment plant arrangement is one of the fundamental management techniques
for canola show positive reaction in the ability to absorb light energy, nutrients and water,
which reflects on maximizing the production of photosynthate directed to the plant and grains.
The aim of this study was to assess the interference of arrangement plant on direct and
indirect components of yield in canola, and includes determining the effects produced in oil
content. The study was conducted at the Instituto Regional de Desenvolvimento Rural do
Departamento de Estudos Agrários da Universidade Regional do Noroeste do Estado do Rio
Grande do Sul (IRDeR/DEAg/UNIJUÍ) in Augusto Pestana, RS, involving the execution of
three experiments for different spacing of 0.20, 0.40 and 0.60m. The experimental design
consisted of a factorial arrangement in randomized blocks with four replicates of 2 x 2 x 4, for
the crop year (2008 and 2009), genotype (Hyola 432 and 61) and plant density (20, 40, 60 and
80 plants m-2) in each set line spacing. Components were determined direct and indirect grain
yield, oil content, morphological and adaptive, as well as the thermal and solar radiation
during the grain filling. The year of cultivation was more effective in changing the grain yield
and other traits in canola direct production and oil content, followed by the genetic potential
to grow and smaller share of the planting density. The cv. Hyola 432 shows greater
effectiveness in maximizing grain yield over Hyola 61 regardless of year, row spacing and
planting density. Moreover, in the shortest space of culture, the character of direct and indirect
yield high values of heritability and character number of tertiary branches shows stability
when subjected to strong variations in the plants arrangement. The thermal shows no
correlation with grain yield and oil content. On the other hand, variables related to the crop
cycle are associated with the thermal and solar radiation accumulated in the grain filling stage
of canola.