Impacts of temperatures on sunflower seed germination

Abstract

The aim of the present study, carried out in the laboratory in 2007, was to observe effects of different temperature conditions on sunflower (Helianthus annuus) seed germination. The four French hybrids Alvaro RM (very early to early), Altesse RM (early to medium early), Alium (medium early) and Albatre (medium early to medium late) were used as a material in this study. The investigations were performed according to the National Regulations of Seed Quality of Agricultural Plants and the international ISTA Rules, to be more accurate, a standard filter paper method at three temperatures was used: alternating temperature of 20-30°C, constant temperature of 20oC and constant temperature of 25°C. According to obtained results the hybrid Alvaro RM had the best germination viability and the total germination at 20oC and 25oC, respectively. The hybrid Altesse RM had the best germination viability and the total germination at 25°C, while the remaining two hybrids had the corresponding values at alternating temperatures of 20-30°C. The gained results point out that studied sunflower hybrids had different temperatures of germination viability and total germination.

Cilj istraživanja je uticaj različitih temperaturnih uslova na klijanje semena suncokreta (Helianthus annuus) izvedenih u laboratorijskim uslovima u toku 2007. godine. U ovom radu korišćena su četri francuska hibrida suncokreta: Alvaro RM (veoma rani do rani), Altesse RM (rani do srednje rani), Alium (srednje rani) i Albatre (srednje rani do srednje kasni). Istraživanja su rađena prema domaćem Pravilniku o kvalitetu semena poljoprivrednog bilja i međunarodnim ISTA Pravilima, tačnije korišćena je standardna metoda između filter papira na tri temperature: naizmenična 20-30°C, konstantna 20oC i konstantna 25°C. Prema dobijenim rezultatima Alvaro RM ima najbolju energiju klijanja na 20°C, a ukupnu klijavost na 25°C. Altesse RM ima najbolju energiju klijanja i ukupnu klijavost na 25°C, dok druga dva hibrida Alium i Albatre imaju najbolju energiju i ukupnu klijavost na naizmeničnoj temperaturi 20-30°C. Rezultati ovog istraživanja pokazali su da ispitivani hibridi suncokreta imaju različite temperature energije klijanja i ukupne klijavosti.