Variability of plant height and head diameter in new hybrid combinations of sunflower

Abstract

Plant height and head diameter of new hybrid combinations of sunflower were investigated. Tests were done under field conditions at experimental field of Institute of Field and Vegetable Crops in Rimski Šančevi. Significant differences were determined between genotypes observing the studied characters. Plant height ranged from 192.83 cm (OD 3369 x RHA-B-1) to 250.17 cm (L-48 x Snrf-583), head diameter ranged between 20.47 cm (UK-PA 45 x Snrf 583) and 24.53 cm (UK-PA 243 x RHA-B-1). Genotypes were grouped by cluster analysis. Four groups and two separate genotypes were found regarding plant height, and three genotypes and eight independent genotypes regarding head diameter.

Proučavana je visina biljke i prečnik glave kod 30 novih hibridnih kombinacija suncokreta. Ispitivanja su obavljena u poljskim uslovima na oglednom polju Instituta za ratarstvo i povrtarstvo na Rimskim Šančevima. Utvrđene su značajne razlike između genotipova u pogledu ispitivanih svojstava. Visina biljaka se kretala od 192,83 cm (OD 3369 x RHA-B-1) do 250,17 cm (L-48 x Snrf-583), a prečnik glave između 20,47 cm (UK-PA 45 x Snrf 583) i 24,53 cm (UK-PA 243 x RHA-B-1). Grupisanje genotipova prema sličnosti urađeno je klaster analizom. Kod visine biljaka konstatovane su četiri grupe i dva zasebna genotipa, a kod prečnika glave tri grupe i osam nezavisnih genotipova.