Yazar "Kirici S." seçeneğine göre listele

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    Determination of the best herbage yield and hypericin content of St. John's Wort (Hypericum perforatum L.) under semi arid climatic conditions
    (2013) Kizil S.; Inan M.; Kirici S.
    St. John's Wort (Hypericum perforatum L.) has been used as a medicinal herb since ancient times, it contains several natural products with noteworthy biological activities. There is no clear information about harvesting time yield and yield components of St. John's Wort as the plants are collected from wild. Therefore, this research aimed to determine ontogenetic (pre-flowering, full flowering and post-flowering periods) and morphogenetic (bottom, middle and top parts) variations in herb yield and hypericin content of St. John's Wort under Diyarbakir ecological conditions during the 2004-05, 2005-06 and 2006-07 growing seasons. Fresh and dry herb yield, dry leaf yield and hypericin content were recorded. Ontogenetic x morphogenetic interaction resulted in statistically significant effects on yield characteristics and hypericin contents. The plant was not harvested during the seedling year; whereas fresh herb yields in second and third year ranged 2721 to 5607 kg ha-1 and 2196 to 3955 kg ha-1 respectively; while dry leaf yield in the second year varied ranged 323 to 1555 kg ha-1 and in the third year 161 to 928 kg ha-1, hypericin content in the second and third year varied between 0.022 to 0.093% and 0.018 to 0.065% depending on parts of the plant. Hypericin content varied according to different parts of the plant, and the maximum value of 0.093% was obtained from the top part of the plants at the full flowering period. The results showed that there is a relationship between dry leaf yield and hypericin content of the plant parts and development stages of the plant.
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    Öğe
    Effect of different row distances on some agronomical characteristics and essential oil composition of cumin (Cuminum cyminum L.)
    (2008) Kizil S.; Kirici S.; Sönmez Ö.
    The study reports determination of appropriate row distances and its effect on agronomical characteristics and essential oil composition of cumin. The results indicated that the highest yields in terms of seed and essential oil were obtained from 20 and 30 cm row distances. Essential oil content ranged between 2.42 and 3.20 %. p-mentha-1,4-dien-7-al content was determined with range of 16.46-27.73 %.
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    Öğe
    Some agronomic characteristics and essential oil composition of Hyssop (Hyssopus officinalis L.) under cultivation conditions
    (Wydawnictwo Akad Rolniczej W Lublinie, 2016) Kizil S.; Güler V.; Kirici S.; Turk M.
    Hyssop (Hyssopus officinalis L.) is an aromatic and medicinal perennial herb native to Southern Europe and temperate regions of Asia. The study aimed to determine the effect of different plant parts harvested at different flowering stages: pre-flowering, full-flowering and post-flowering, in some agronomical characteristics, essential oil yield and components of hyssop plant in semi-arid climatic conditions of South Eastern Anatolia, Diyarbakir, Turkey. The results showed that both flowering stages and plant parts had important effects on fresh, dry herbage, dry leaf yield of hyssop, as well as essential oil content. It was concluded that under semi-arid climatic conditions, hyssop plant could be grown successfully in conformity to the limits of ISO standards and harvest from top parts of the plants at full flowering stage could be preferred for maximum dry leaf yield and essential oil contents. © Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie, Lublin 2016.