Izvorni znanstveni članak
https://doi.org/10.5513/JCEA01/12.1.873
Leaf area duration of oilseed rape (Brassica napus subsp. napus) varieties and hybrids and its relationship to selected growth and productivity parameters
Elena HUNKOVÁ
; Slovak University of Agriculture in Nitra, Department of Plant Physiology, A. Hlinku 2, 949 76 Nitra, Slovak Republic, phone +421 37 641 4851
Marek Živčák
Katarina Olšovská
Sažetak
The trial with 11 genotypes of winter oilseed rape (Brassica napus subsp. napus) with
different provenance was based on experimental station Borovce near SCAR – RICP
Piešťany (Slovak Republic) in autumn 2008 (the Trnavská pahorkatina locality, altitude
167 m, maize growing region). Approximately in weekly intervals, since beginning of
April to middle of June 2009, for the purpose of growth analysis, plants of all genotypes
were taken. The curves of leaf area development of genotypes were simulated from
the data on the size of leaf area using software application. Based on these curves, the
integral leaf area (leaf area duration, LAD) was established, calculated as the integral
area under the curve showing the course of simulated leaf area during the spring
growing season. Hybrids had an average leaf area larger than the line varieties. The
highest values of LAD reached line varieties Verona and Viking. LAD values simulated
for the spring growing season of individual genotypes correlated closely with dry mass
weight reached before siliques ripening period (in the middle of June). The positive
correlation between the LAD and the number of deployed siliques was recorded. Ability
to keep sufficiently large leaf area over a long period expressed in LAD values was
shown as a presumption for high production potential of winter oilseed rape genotypes.
Ključne riječi
oilseed rape; Brassica napus subsp. napus; genotypes; growth parameters; leaf area duration (LAD)
Hrčak ID:
70794
URI
Datum izdavanja:
13.7.2011.
Posjeta: 1.878 *