DETERMINATION OF ONTOGENETIC VARIABILITY IN TUBEROSE [AGAVE AMICA (MEDIK.) THIEDE & GOVAERTS] PLANT

📝 Özet

This study was conducted to determine the effects of ontogenetic variability (different flower-harvest times) on essential oil content, yield, and certain agronomic characteristics of tuberose (Agave amica (Medik.) Thiede & Govaerts). The experiment was carried out under Şanlıurfa conditions during the 2024 summer growing season. The research was established according to a randomized complete block design with three replications using four different flower harvest times (bud stage, the day of full flower opening, 1 day after flower opening, and 2 days after flower opening). Phenological observations, including emergence date, first flowering date (days), 70% flowering date (days), last flowering date (days), flowering period of the spike (days), and vegetation period (days), were recorded. In addition, plant height (45.66–46.70 cm), number of flowers per spike (29.33–30.00 flowers spike⁻¹), spike length (82.66–87.70 cm), and essential oil content (0.17–0.38%) were determined. According to the results of the study, the highest essential oil content was obtained from flowers harvested on the day of full flower opening. The findings revealed that the essential oil content of tuberose varied depending on the ontogenetic developmental stage and reached its maximum value at the full flowering stage. Therefore, harvesting flowers at the fully flowering stage is recommended for essential oil production.

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