A Study on the Determination of Optimum Germination Methods for Cocklebur Seeds (Xanthium strumarium L.)

This study was carried out to determine the most suitable method for the germination of cocklebur (Xanthium strumarium L.) seeds collected in 2014 from the Muslubelen Pass at 1440 m in Yozgat province. Cocklebur seeds treated with different GA₃ (50, 250, 500, 1000, 2000 ppm) and temperature (in the oven 90 °C and 120 °C for 1, 5 and 10 minut es) and seed germination was observed. Germination times and rates were determined by 10 different observations in 13 different applications. Germination times for 24 h GA3 (50, 250, 500, 1000, 2000 ppm), 10 min. in oven (90 °C and 12 0 °C) was determined as 10 days, and for 1 min. in oven 90 °C and 120 °C (8 and 11th application), and 5 min. in oven 90 °C an d 120 °C (9 and 12th application) germination times determined as 11 days. The germination time in the 13th application (10 min at 120 ° C) was 18 days. Germination rates of cocklebur seeds were found to be about 26% in the 13th application (10 min of the plant 120° C), 70% in the 9th application (5 min . of the plant 90° C) and 90-100% in other applications.