YIELD AND QUALITY OF BLACK CUMIN (Nigella sativa L.) POPULATIONS: THE EFFECT OF ECOLOGICAL CONDITIONS

Abstract

The experiment was carried out in two vegetation seasons of 2013 and 2014 at the Isparta and Eskisehir ecological conditions. The main purpose of the study was to determine the effects of years and locations on seed yield, some yield-related traits, essential oil content and fixed oil ratio of black cumin populations. In the study, black cumin populations were obtained from Burdur, Tokat, Usak, Eskisehir and Antalya provinces. The experiments were arranged according to a randomized complete-block design with three replications. The average seed yield varied between 201.0-407.1 kg ha -1 in 2013 and 458.9-790.3 kg ha -1 in 2014. In compared to locations; while yield components of black cumin populations significantly varied according to locations and years, seed yield in both years were higher in Isparta location on all populations due to higher rainfall than Eskisehir. In compared to populations; the highest seed yield was determined in Usak population and it was followed by Eskisehir population. But the essential oil wasn't detected in Usak population. The highest essential oil content was obtained from Tokat population in both locations and years, it was followed by Eskisehir population. The fixed oil ratios were higher in Tokat, Usak and Antalya populations in both locations and years.

Effect on Yield and some Quality Characteristics of Seed Harvest at Different Stages of Maturity in Nigella sativa L.

“…Sufficient moisture in the soil promotes the nutrition uptake of the plants, so rainfall in the first year increased the seed yield. Similar results that were obtained in other studies have also reported that seed yield and other plant caharecteristics varied depending on the climatic conditions of the year (Sadeghi 2009;Ghamarnia & Jalili, 2013;Kara et al 2015).…”

“…In comparison to previous studies, the essential oil content of the present results were lower than the values reported: 0.5% (Bourgou et al 2010), 0.5-1.6% (Ramadan 2007), 0.27-0.35% (Toncer & Kızıl, 2004, while showing parallels with the findings of Benkaci et al (2013) and Kara et al (2015). Kara et al (2015), Mohammadi et al (2016) and Mazaheri et al (2019) reported that fixed oil content varied between 26.0-32.5%, 31.6-40.0% and 34.0-39.0%, respectively. These differences might have been due to air temperature, precipitation, soil fertility, agronomic conditions and harvest stages (Telci 1995; Kulan et al 2012; Kara et al 2015)…”

“…In comparison to previous studies, rates of main essential oil components varied: 42.4% thymoquinone and 10.3% carvacrol (Mahmoudvand et al 2014), 67.7% thymoquinone, 8.4 % carvacrol, 4.8% junipene, 2.3% p-cymen and 1.9% 4-terpineol (Palabıyık & Aytaç, 2018). These differences might have been due to variety, various ecological conditions including air temperature, radiation, precipitation and soil fertility affecting the production of secondary metabolites of black cumin (Benkaci et al 2007;Mahmoudvand et al 2014;Kara et al 2015).…”

Effect of Different Row Spaces on Yield and Quality of Anise (Pimpinella anisum) under Eskisehir Ecological Conditions

“…As with other cultivated plants, the yield and quality of the product to be obtained in medicinal aromatic plants results from the interaction of the genetic makeup of the plant material with the ecological conditions of the region and agronomic applications [13,14,15,16,17,18]. For this reason, it is of great importance to determine the most appropriate agronomic applications by the researches that will be carried out in order to produce high yield and quality products in a region.…”

Agrotechnical investigation towards standardization of black cumin seed production (Nigella sativa L.)

“…Takođe, istraživanja tehnologije gajenja nisu vršena ni u Republici Srbiji, pa se raspolaže samo sa rezultatima istraživanja realizovanim u državama Bliskog istoka, Severne Afrike, Indije, Pakistana i saudijskog poluostrva. Razlike u produktivnosti i kvalitetu crnog kima, zavisno od agroekoloških uslova u radovima spominje više istraživača iz ovih oblasti [11,12,13,14]. Dokazano je da najbolji hemijski sastav i terapeutsko dejstvo ima seme i ulje, proizvedeno u aridnim i semiaridnim područjima [15,16,17,18].…”