Nilgün Yenice

Relationship between boron content and antioxidant compounds in Citrus leaves taken from fields with different water source

Boron contamination in the agricultural lands is an important problem for Western Turkey, which has rich boron deposits. This study was carried out in Nazilli regions upon orange (Citrus sinensis L. Osbeck) plants irrigated with relatively high boron laden channel waters (LCI) and with well waters (LWI) which contain lower amounts of boron. The leaves of the plants irrigated with channel water were found to contain twice the amount of boron compared with those irrigated with well waters. Boron content of leaves in both groups were approximately ten times the boron content in the soil on which they are grown. In the leaves of the plants irrigated with channel waters there were approximately 50% chlorophyll loss and higher chlorophyll a/b and caretonoid/chlorophyll ratios. In the excessive boron containing leaves was found higher soluble protein and carbohydrate contents, but lower determined free proline value. In plants that irrigated with high boron laden channel water significantly lower α-tocopherol content and two fold higher ascorbate concentration were determined. The lower activities of catalase and glutathione reductase enzymes and higher total superoxide dismutase activity were measured in high boron content leaves. The retardation of growth due to boron toxicity can be attributed to the chlorophyll loss and inhibition of the carbohydratemetabolism. Boron at toxic level may cause the cell membrane lipids to be damaged by the free radicals by decreasing the α-tocopherol levels. The increase in the ascorbate concentration may have a vital role in the protection of the inner cell structures against the boron toxicity.

Effect of irrigation on the oil content and fatty acid composition of some sunflower seeds

The effect of irrigation on the seed yield, oil yield, and oil composition of sunflower in populations of Ekiz1 and VNIIMK 8931, a mixture of N2, N3, and N4 lines, and a synthetic variety obtained from these lines has been studied. The major fatty acid was found to be oleic acid, in addition to linoleic, palmitic, and stearic acids. Irrigation increased seed yield, oil yield, and oil content of all samples. In two of them, the synthetic variety and VNIIMK 8931, the increase was found to be statistically significant. In addition, irrigation of the samples did not increase significantly the amount of oleic and linoleic acids. On the contrary, the amount of linoleic acid in the mixture of N2, N3, and N4 lines and oleic acid in VNIIMK 8931 decreased statistically significantly.

MÜZİK VE SINIF ÖĞRETMENİ ADAYLARININ MÜKEMMELİYETÇİLİK VE DUYGUSAL ZEKÂ DÜZEYLERİNİN İNCELENMESİ

Bu calisma, muzik ve sinif ogretmeni adaylarinin duygusal zekâlari ile mukemmeliyetcilik duzeylerini cesitli degiskenler acisindan irdelemek, duygusal zekâ ile mukemmeliyetcilik arasindaki korelasyonu belirlemek amaciyla gerceklestirilmistir. Arastirmanin orneklemini Adnan Menderes Universitesi Egitim Fakultesi muzik ogretmenligi ve sinif ogretmenligi anabilim dallarinda ogrenim gormekte olan 240 ogretmen adayi olusturmustur. Arastirmada veri toplama araci olarak Frost, Marten, Lahart ve Rosenblate (1990) tarafindan gelistirilen Ozbay ve Misirli Tasdemir (2003) tarafindan Turkce’ye uyarlanan Cok Boyutlu Mukemmeliyetcilik Olcegi ile Petrides ve Furnham tarafindan gelistirilen Deniz, Ozer ve Isik tarafindan (2013) Turkce’ye uyarlanan Duygusal Zekâ Ozelligi Olcegi Kisa Formu (DZOO-KF) kullanilmistir. Verilerin analizinde t-testi, tek yonlu varyans analizi ve korelasyon analizlerinden yararlanilmistir. Arastirma bulgularina gore; ogretmen adaylarinin mukemmeliyetcilik toplam puanlarinin cinsiyete ve siniflara gore; duygusal zekâ puanlarinin ise siniflara, akademik basari algilarina ve meslek secme nedenlerine gore anlamli farkliliklar gosterdigi ortaya konulmustur. Ayrica mukemmeliyetcilik duzeyinin akademik basari ortalamasi ile pozitif yonde, duygusal zeka ile negatif yonde bir iliskinin oldugu sonucuna ulasilmistir. Anahtar Kelimeler: Muzik ve Sinif Ogretmeni Adaylari, Mukemmeliyetcilik, Duygusal Zekâ