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Articles by Zeki Mut
Total Records ( 4 ) for Zeki Mut
  Mehmet Serhat Odabas and Zeki Mut
  The aim of this study was to investigate the possibility to predict by mathematical models seed germination percentage and days to germination on the basis of temperature. Seed from legumes and cereals were used: faba bean (Vicia faba L.), bean (Phaseolus vulgaris L.), pea (Pisum sativum L.), cowpea (Vigna sinensis L.) and some cereals; bread wheat (Triticum aestivum L.), durum wheat (Triticum durum L.), Barleys (Hordeum vulgare conv. distichon and Hordeum vulgare conv. hexastichon), oat (Avena sativa L.), Triticale (Triticale withmack), Rice (Oryza sativa L.), rye (Secale cereale L.), pop corn (Zea mays everta Sturt.), maize (Zea mays indentata Sturt.) and Johnson grass (Sorghum halepense L.) was investigated by mathematical models based on temperature. For this reason a model D = a-(bxT)+(cxT2) produced earlier for predicting the time to emergence in relation to temperature for some vegetable crops was utilized. The final structure of the model did not change for predicting the days to germination of the tried grain legumes while it changed to GP = a+(bxT)-(cxT2) for predicting Germination Percentage (GP) of the crops tried. It was found that the new mathematical models obtained after adapting the present data to the above mentioned model could be applied in terms of the studied parameters. In addition, optimum temperature for seed germination was calculated by using the coefficients T0 = [-b/(2xc)] obtained from the regression models of the days to germination.
  Zeki Mut , Ismail Sezer and Ali Gulumser
  The study was carried out to determine the effects of nitrogen level (0, 60 120, 180 kg ha- 1), sowing rate (200, 350, 500, 650 seed m- 2) on grain yield, yield components and some quality traits of two triticale cultivars under rainfed conditions in Samsun, Turkey, in the 2001-02 and 2002-03. Increasing nitrogen applications increased grain yield, plant height, number of ear m- 2, number of kernel ear- 1, thousand-grain weight, test weight and grain protein content. Plots treated with 500 number seed m- 2 recorded maximum grain yield. This study indicated that sowing rate should be 500 number seed per square meter and nitrogen dose should be between 120 and 180 kg ha- 1 to obtain high grain yield from triticale in Samsun located in the middle Blacksea region and similar ecological conditions.
  Nevzat Aydin , Zeki Mut , Hanife Mut and Ilknur Ayan
  The objective of this study was to investigate the effects of sowing on hay yield and quality of oat genotypes. Sixteen oat genotypes were grown over the consecutive four growing seasons in Samsun, North of Turkey. Hay yield and quality were significantly different between genotypes and sowing dates. Hay yield, Crude Protein (CP), Acid Detergent Fibre (ADF), Neutral Detergent Fibre (NDF), Total Digestible Nutrients (TDN), Relative Feed Value (RFV), Ca, K, P and Mg contents of hay were determined. Hay yield of the oat genotypes in the autumn sowing was higher than in the spring sowing while hay quality (CP, ADF, NDF, TDN, RFV and some elements) in the autumn sowing was lower than in the spring sowing. The hay yield of late-maturing and tall genotypes like Yesilkoy-330, Yesilkoy-1779, Faikbey and Seydisehir (12.1, 12.2, 12.4 and 12.9 t ha-1, respectively) were higher compared with the other genotypes in sowed in autumn. But quality of these genotypes in autumn sowing was lower than the other genotypes. In spring sowing, genotypes Samsun and Kupa had the highest hay yield and fairly high quality. Ca, K and P contents of hay were adequate for ruminants in both sowing dates but Mg content was not adequate. This study showed that sowing date had great effect on hay yield and quality potential of oat genotypes.
  Zeki MUT , Nevzat AYDIN , Hasan Orhan BAYRAMOGLU and Hasan OZCAN
  The objectives of this study were to compare nonparametric stability measures, and to identify promising high-yield and stable bread wheat (Triticum aestivum L.) genotypes in 7 environments during 2003-2005 in the central Black Sea region of Turkey. The bread wheat genotypes (20 advanced lines and 5 cultivars) were grown in a randomized complete block design with 4 replications in 7 different environments. Three nonparametric statistical tests of significance for genotype × environment (GE) interaction and 10 nonparametric measures of stability were used to identify stable genotypes in 7 environments. Combined ANOVA and nonparametric tests (Kubinger, Hildebrand, and De Kroon/Van der Laan) of genotype × environment interaction indicated the presence of significant crossover and non-crossover interactions, as well as significant differences between genotypes. In this study high TOP values (proportion of environments in which a genotype ranked in the top third) and low rank-sum values (sum of ranks of mean yield and Shukla’s stability variance) were associated with high mean yield. Nonetheless, results of the other nonparametric tests were negatively correlated with mean yield. In the simultaneous selection for high yield and stability, only the rank-sum and TOP methods were useful in terms of the principal component analysis (PCA) results, and correlation analysis of nonparametric stability statistics and yield. According to these stability parameters (TOP and rank-sum) G7 (VONA//KS75210/TAM101), G9 (JUP/4/CLLF/3/II14.53/ODIN//CI13431/WA 00477), G20 (Sakin), and G21 (VORONA/KAUZ//1D13.1/MLT) were the most stable genotypes for grain yield. The results also revealed that based on nonparametric test results stability could be classified into 3 groups, according to agronomic and biological concepts of stability.
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