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    Effects of different harvesting times on protein content and mineral nutrient values of some lentil (Lens culinaris) cultivars seeds
    (Taylor & Francis Inc, 2020) Turk, Zubeyir
    The objectives of this study were to investigate the effects of different harvesting times (early, on-time and late harvest) and lentil varieties (DR13127, Sakar, Kafkas, Bukun, Firat-87, Cagil) on protein content (PC) and mineral nutritional values of some lentil cultivars seeds and determine the correlations between PC and mineral concentrations, and between minerals concentrations themselves. The results of the study indicated that while the late harvesting increased the potassium (K) and calcium (Ca) concentrations of lentil seed, magnesium (Mg), sodium (Na), and nickel (Ni) concentrations were higher in early harvesting than other two harvesting times. There was significant difference among genotypes for the Ca, Mg, zinc (Zn), Na, copper (Cu), manganese (Mn), and Ni concentrations in seed. It was found that the varieties had no statistically significant effect on PC, K, iron (Fe) and selenium (Se) content of the seeds. It was found that the varieties had statistically significant effects at the level of p <= 0.01 on Ca, Mn, and Ni content of the seeds, at the level of p <= 0.05 on Mg and Na content of the seeds, and at the level of p <= 0.1 on Zn and Cu content of the seeds. Also, the significant correlations between mineral concentrations and PC and mineral concentrations were found in this study. Consequently, it can be said that the harvesting time and variety is critical for some mineral nutrient values of lentil seed. Information obtained from this study will be useful for lentil producers, breeders, processors and marketers.
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    Öğe
    Effects of land rolling on soil properties and plant growth in chickpea production
    (Elsevier, 2019) Gursoy, Songul; Turk, Zubeyir
    Land rolling after planting is a common practice in legume production systems in order to smooth the soil surface and improve plant growth by increasing root-soil contact. However, excessive soil compaction due to land rolling can increase soil strength and hamper root growth. The aim of this study was to evaluate the potential effects of land rolling on some soil properties and plant growth parameters in chickpea production. For this purpose, the different ground pressures of land roller (0, 20, 25, 30, 35, 40 kPa) were tested at different times (pre-emergence and post-emergence) under field conditions. To examine the effects of the rolling times and the ground pressures of the land roller on soil properties and plant growth, moisture content, temperature, penetration resistance as soil properties and root dry weight, shoot dry weight, shoot-root ratio, nodule number and grain yield as plant growth parameters were measured. Results showed that the use of the land roller significantly influenced the soil properties (moisture content, temperature, and penetration resistance), plant growth parameters (root dry weight, shoot dry weight, shoot-root ratio, nodule number) and grain yield. The highest grain yield values at 20, 25 and 30 kPa ground pressure levels indicate that some compaction is needed to be able to increase crop yield and prevent the loss of soil moisture.
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    Öğe
    The Practice of AMMI and GGE Biplot Analysis of Lentil Genotypes Assessment in Multi-Environment Trials
    (Crop Science Soc Phillippines, 2017) Turk, Zubeyir; Kendal, Enver
    Red Lentil (Lens culinaris Medik.) as a rich source of the breeding program is the most important crop in Turkey. The stability and adaptability of lentil genotypes are very significant for the program decisions to release new varieties. Genotype x Environment Interaction (GEI) and AMMI (Additive main effects and multiplicative interaction) was used to make an estimation of the grain yield and to understand the GxE interaction patterns by examining the differential ranking of variety yields in multi-environment trials. Therefore, 6 lentil genotypes were used in the study. The experiments were laid out in randomized complete block design with 4 replications in 8 environments. The superiority of the genotypes was determined by the first two principal components (IPC1 and IPC2) and to create a two-dimensional GGE biplot. The sum of squares of the first two components were accounted by 58.07% and 19.80% for genotype x trait (GT), 44.89% and 24.14% for genotype x environment (GE), 59.86%, and 24.37% for environment x trait (ET), respectively. The GGE biplot indicated that two mega-environments occurred among environments. On the other hand, 4 groups occurred among the traits based on the genotypes and environments. The results showed that G1 has general adaptability for all environments, while G2 and G3 showed specific adaptation to E3, E6, and E7. According to the biplot techniques, G3 came forward with the majority traits, while G2 came forward with only high yielding ones. The results of the GGE biplot indicated that G3 is suitable to be recommended for release, G5 has desirable origins for yield stability, and E7 is valuable to the environment for its quality and can be used in the lentil breeding program. The study revealed that a GGE biplot graphically displays interrelationships between the test environments as well as in between genotypes and traits by visual comparisons.