Browsing by Author "Ozpay, Taylan"

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Changes of the Lipid Peroxidation and Chlorophyll Amount of Green Bean Genotypes Under Drought Stress
(Academic Journals, 2010) Yasar, Fikret; Uzal, Ozlem; Ozpay, Taylan
One of the environmental stresses, and maybe one of these important drought stresses, cause deterioration of oxidative on the plant cell. Beans is one of the vegetables influenced by high level of drought. Drought stress deterioration effects on beans and its aim determines these effects either as been different or not caused by drought stress dependent on 10 item beans (Phaseolus vulgaris L.) variety. To get the hydroponic condition ready in time within 15 days, plant with 10% ratio of polyethyleen glycol (PEG 6000) were used to create drought effects. Bean leaves were harvested 6 days later after PEG implementation and were measured. The amount of lipid peroxidation production and malondyhalheit were directed towards determining the oxidative deterioration and in addition the chlorophyll amount. As a result of drought implementation, Samsun 96 (S96) and Sirik Barbunya (SB) beans genotypes have the most decreased chlorophyll amount than Gevas Sirik 57(GS57) and Oturak Barbunya (OB) genotypes. At the same time, S96 and SB genotypes have the most increased malondyhalheit (MDA) content than GS57 and OB. Also, of the total ten item of beans variety, Gevas Sirik 57 and Oturak Barbunya were least affected by drought stress, while S96 and SB genotypes showed more sensitivity to drought stress.
Variations in Response To Salt Stress Among Field Pea Genotypes (Pisum Sativum Sp.arvense L.)
(Medwell online, 2008) Yildirim, Buenyamin; Yasar, Fikret; Ozpay, Taylan; Turkozu, Didem; Terziodlu, Omer; Tamkoc, Ahmet
This Study examined the responses to salt stress in 11 pea genotypes and two pea cultivars. Pea genotypes were selected from among wild pea and white flowered pea cross-breed varieties from different regions in Anatolia. In general, root fresh weight (fw) shoot fw, leaf fw, leaf number and chlorophyll contents were found to decrease with increases in salinity, whereas root and leaf MDA ratios increased with increases in salinity. Genotypes 1 (10431), 9 (101917) and 10 (1103220) were found to be the most salt-tolerant. Genotypes 6 (110121) and 7 (B-6) were found to be the most sensitive.