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  • Küçük Resim
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    Changes in sugar contents of fig fruit (Ficus carica l. Cv. Bursa Siyahı) during development
    (2007) Ersoy, Nilda; Gözlekçi, Şadiye; Kaynak, Lami
    Bu çalısma Akdeniz Üniversitesi Ziraat Fakültesi, Bahçe Bitkileri Bölümünde yapılmıs olup, örnekler 10 yaslı incir (Ficus carica L. cv. Bursa Siyahı) ağaçlarından alınmıştır. Çalışmanın amacı, farklı gelişme dönemlerinde hasat edilen incir meyvelerinin şeker içeriklerinin Yüksek Performanslı Sıvı Kromatografisi (HPLC) teknigi ile belirlemektir. Farklı meyve gelisme dönemleri boyunca meyvelerdeki majör ve minor sekerlerdeki degisimler saptanmıstır. Tüm gelisme dönemlerinde fruktoz ve galaktoz miktarları baskın bulunurken, sırasıyla glukoz ve sakkaroz bunları izlemistir. Sakkarozun aktivitesi ilk ve üçüncü büyüme dönemlerinde ikinci döneme kıyasla daha etkin bulunmuştur. Şekerlerden riboz, ksiloz, arabinoz, maltoz ve laktoz ise eser miktarlarda tespit edilmişlerdir.
  • Küçük Resim Yok
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    Levels of Internal Indole-3-acetic Acid and Abscisic Acid in Different Physiological Growth Periods in The Leaves of Loquat (Eriobotrya japonica Lindl.) Fruit
    (ASIAN JOURNAL OF CHEMISTRY, 2009) Ersoy, Nilda; Kaynak, Lami
    The loquat fruit variety, which blooms in fall and bears flowers and fruit in winter, differs from other varieties in terms of periods of physiological growth. Plants produce the nutrients they need with their leaves. Hence, it is important to determine the levels of internal growth regulating substances found in leaves of the loquat fruit in different growth periods. The present study aims to determine internal indole-3-acetic acid (IAA) and abscisic acid (ABA) levels by taking samples from the leaves of the Gold Nugget and Akko XIII loquat fruit varieties in different physiological growth periods. According to the results, the total-IAA level increased two-fold in the first year in May, when fruit begin to ripen, in comparison to August, when morphological differentiation occur, an one-fold in the second year. The total-IAA level in the Akko XIII loquat fruit variety increased one-fold in May in comparison to August in the first year and 4-fold in the second year. The total-ABA level in the Gold Nugget loquat fruit variety decreased three-fold in May in comparison to August in the first year and four and a half-fold in the second year. On the other hand, the total-ABA level in the Ako XIII loquat fruit variety decreased nearly three-fold in May, when fruit begin to ripen, in comparison to August, when morphological differentiation occurred and 3-fold in the second year.
  • Küçük Resim Yok
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    Levels of some endogenous plant hormones during the flowering period in loquat (Eriobotrya japonica Lindl.)
    (ASIAN JOURNAL OF CHEMISTRY, 2008) Ersoy, Nilda; Kaynak, Lami; Kankaya, Abdullah
    Changes in the amount of endogenous phytohormones were determined in loquat flowers. Samples were chosen among flowers in the beginning bloom stage, full bloom stage and the end of the flowering period. Among these samples, amounts of free-, bound-and total-forms of some endogenous plant hormones (indole-3-acetic acid, gibberellic acid, abscisic acid, zeatin) were separated from plant extract and quantified by high performance liquid chromatography using a reversedphase C-18 column. According to the results, indole-3-acetic acid level did not change during the flowering period in Gold Nugget cultivar, but it was observed to be high in Akko XIII cultivar in the initiation of flowering period. Level of gibberellic acid in the flowers decreased from initiation of flowering period till the end of it. During flowering period abscisic acid level dramatically increased and reached its maximum, which indicates that abscisic acid might play an active role in flowering process. Zeatin was observed in high levels in both the initiation and the end of flowering period. Its level, however, was determined to be minimum at the full bloom stage.
  • Küçük Resim Yok
    Öğe
    Some endogenous hormones in loquat
    (ASIAN JOURNAL OF CHEMISTRY, 2008) Ersoy, Nilda; Kaynak, Lami; Kankaya, Abdullah
    This work was carried out grown in an orchard of Citrus and Greenhouse Research Institute in Antalya. Fruit samples were taken from loquat trees (Eriobotrya japonica Lindl. cvs Gold Nugget and Akko XIII) on small, medium-size and ripe-fruit stages. Changes in the amounts of endogenous gibberellic acid (GA(3)), indole-3-acetic acid (IAA), abscisic acid (ABA) and zeatin (Z) during these growth periods of the loquat. IAA, GA(3) ABA and Z were separated from plant extract and quantified by high performance liquid chromatography (HPLC) using a reversed-phase C-18 column. Analysis of hormones was performed on a separate basis for seed and pericarp and levels of these hormones were found. According to the results, total-IAA was found high level in fruit flesh and seed samples in the small and mature loquat fruits. GA(3) was low level in mature fruit but it was high in the seed samples in the same period. ABA level was found maximum in the small fruit in the both of the fruit flesh and seeds. Level of zeatin was found maximum in the small fruit's flesh and seeds.