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Keles G.,Bahri Dagdas International Agricultural Research Institute | Demirci U.,Bahri Dagdas International Agricultural Research Institute
Animal Feed Science and Technology | Year: 2011

The experiment was conducted to investigate the effects of two homofermentative lactic acid bacteria (LAB) (two strains of Lactobacillus plantarum and multi-strain of homofermentative LAB+enzyme mixture) and a heterofermentative LAB (two strains of Lactobacillus buchneri) on conservation characteristics of baled triticale-Hungarian vetch silage and lamb performance. Triticale-Hungarian vetch mixture was mowed at milk stage of maturity of triticale. The herbage was wilted to 473g/kg dry matter (DM), treated with LAB additives at 1.0×106cfu/g and baled. Bales were wrapped with six layers of plastic white stretch-film and stored outdoor for 3 months. The control and inoculated silages were preserved well at pH values of between 4.5 and 4.6 with low concentration of butyric acid, moderately low concentration of ammonia-N and low count of yeast and mould. The homofermentative LAB either used alone or in combination with enzyme mixture had little effect on preservation characteristics of baled silages. However, L. buchneri had a more profound effect on the final fermentation products of baled silage and improved the standard of preservation with the apparently difficult-to-preserve herbage used in this experiment. Inoculation with L. buchneri resulted in silage with higher (P<0.05) concentration of acetic and propionic acid and lower (P<0.05) concentration of lactic acid and water soluble carbohydrates (WSC). Aerobic stability was the longest (P<0.05) in silage treated with L. buchneri, but it was the shortest (P<0.05) in silages treated with L. plantarum. Lambs fed with the silages treated with L. buchneri had higher (P<0.01) silage and total intake. There was no (P>0.05) treatment effect on any variables measured on rumen fluid. It can be concluded that L. buchneri can offer to make bale conditions more inhibitory to activities of undesirable microorganism and may positively affect the feeding value of silages. © 2010 Elsevier B.V.


Kaya Y.,Bahri Dagdas International Agricultural Research Institute | Sahin M.,Bahri Dagdas International Agricultural Research Institute
Genetika | Year: 2015

According to literature, a detailed paper has not been published yet on using non-parametric stability statistics for evaluating genotypic stability in protein content (PC) of wheat. Thus, this study aimed to investigate the stability for PC of wheat using sixteen non-parametric stability measures (YSD-PC standard deviation, RM-Rank mean, RSD-Rank's standard deviation, RS-Rank Sum stability statistic, PA-Percentage of adaptability, R1 and R2-Range indexes, TOP-Ranking, Si (1), Si (2), Slin (3), Si (6), NPi (1), NPi (2) NPlin (3)and NPi (4) rank statistics, together with Y-PC mean). The study included 13 wheat genotypes, consisting of 5 registered cultivars and 8 breeding lines, selected from National Wheat Breeding Program of Turkey. The genotypes were grown in ten rain-fed environments, representative of major rain-fed wheat-growing areas of Turkey, during 2011-2013 cropping seasons. The ANOVA showed that the effects due to environments (E), genotypes (G) and GE interaction (GEI) were significant (P < 0.01). Spearman's rank correlation and principal component analyses (PCA) also revealed that two types of associations were found between the stability parameters: The first type included Si (1), Si (2), Si (3), Si (6), NPi (1), NPi (2) NPi (3), NPi (4), RSD and YSD parameters which were related to static stability, whereas the second type consisted of the Y, RM, TOP, PA, RS, R1 and R2 parameters which are related to dynamic concept of stability. Among the 8 breeding lines, G7 and G8 were the best genotypes in terms of both high PC and stability. In conclusion it could be suggested that dynamic non-parametric stability statistics should be used for selecting genotypes with high PC and stable when tested across a wide range of environments.


Kaya Y.,Bahri Dagdas International Agricultural Research Institute | Sahin M.,Bahri Dagdas International Agricultural Research Institute
Food Science and Technology | Year: 2015

Literature has unveiled that a paper has not been published yet on using non-parametric stability statistics (NPSSs) for evaluating genotypic stability in dough properties of wheat. Accordingly, the effects of genotype (G), environment (E) and GE interaction (GEI) on alveograph parameters, i.e. dough baking strength (W) and its tenacity (P)/extensibility (L), of 18 wheat (T. aestivum L.) genotypes were studied under irrigated field conditions in an 8-year trial (2006-2014) in central Turkey. Furthermore, genotypic stability for W and P/L was determined using 8 NPSSs viz. RM-Rank mean, RSD-Rank’s standard deviation, RS‑Rank Sum, TOP-Ranking, Si (1), Si (2), Si (3) and Si (6) rank statistics. The ANOVA revealed that W and P/L were primarily controlled by E, although G and GEI also had significant effects. Among the 8 NPSSs, only RM, RS and TOP statistics were suitable for detecting the genotypes with high stable and bread making quality (e.g. G1 and G17). In conclusion, using RM, RS and TOP statistics is advisable to select for dough quality in wheat under multi-environment trials (METs). © 2015, Sociedade Brasileira de Ciencia e Tecnologia de Alimentos, SBCTA. All rights reserved.


Akcura M.,Bingöl University | Partigoc F.,Bahri Dagdas International Agricultural Research Institute | Kaya Y.,Bahri Dagdas International Agricultural Research Institute
Journal of Animal and Plant Sciences | Year: 2011

The objective of this study was to evaluate the ability of several selection indices to identify drought tolerant/resistant genotypes under different conditions of Konya. Thirty six bread wheat genotypes (twenty four pure lines from Turkish bread wheat landraces and twelve modern bread wheat cultivars) were evaluated under both moisture stress (rainfed) and non stress (irrigated) conditions using a "randomized complete block design" with three replications. Nine drought tolerance indices including yield stability index (YSI), yield index (YI), superiority index (P i), stress tolerance index (STI), geometric mean productivity (GMP), stress susceptibility index (SSI), mean productivity (MP), stress tolerance (TOL), harmonic mean (HM) and linear regression coefficient (bi) were calculated. The indices were adjusted based on grain yield under drought condition (Ys) and normal conditions (Yp). SSI is suggested as useful indicator for wheat breeding where the stress is severe while MP, GMP, TOL HM and STI are suggested if the stress is less severe. Biplot analysis was used to explain relationship between grain yield and drought indices. Karahan-99, Bayraktar-2000, Gerek- 79, PL-7, Sönmez-2000, Ki{dotless}raç-66 and PL-5 were the superior genotypes for both rainfed and irrigated conditions with high PC1 and low PC2. PL-25, PL-13 and PL-23 with high PC2 were more suitable for rainfed than irrigated conditions.


Yucer A.A.,General Directorate of Agricultural Research and Policies | Kan M.,Bahri Dagdas International Agricultural Research Institute | Demirtas M.,General Directorate of Agricultural Research and Policies | Kalanlar S.,MFAL
Land Use Policy | Year: 2016

Turkey faces a problem that is encountered in emerging economies across the world. The small size of parcels and their scattered nature that are the product of existing inheritance systems are incompatible with the new technologies available. The resulting higher production, transport and marketing costs in Turkey mean that it is not competitive with its trading partners. The Turkish government has proposed a series of changes in how inheritance rights are to be managed in a program of land consolidation and reorganization. Such changes would have a major impact on the rural economy and could elicit strong cultural and political reactions.This study analyses the views of agricultural stakeholders to these proposed legal changes to prevent further fragmentation of agricultural land. The research was designed to predict impact rather than create policy. The interviewed stakeholders were separated into two groups; Those "in favor of the solution" and those "opposed to the solution" by a two-step cluster analysis, taking into account the social and economic characteristics of the stakeholders as well as the region where the study was conducted. It was determined that their economic concerns are the primary obstacle to creating effective policy. Education, social security, living place, tradition, and experience in the implementation of the policy were identified as other influential factors. © 2016 Elsevier Ltd.


Demir M.K.,University of Konya | Demir B.,Bahri Dagdas International Agricultural Research Institute
Quality Assurance and Safety of Crops and Foods | Year: 2016

Couscous is a traditional cereal product that is generally produced by coating wheat bulgur with the wheat flour and water or milk in Turkey. In this study, different ratios of legume flours (soy bean flour, SBF; chickpea flour, CF; common bean flour, CBF; lentil flour, LF and lupine flour, LUF), buckwheat flour (BWF), and wheat germ were used in the production of couscous in order to improve the nutritional status. Some selected properties of couscous, such as, colour (L*, a* and b*) weight increase (WI) and volume increase, cooking loss (CL), moisture, ash, crude protein, phytic acid contents, minerals and sensory properties were determined. The addition of BWF and different legumes flours (SBF, CF, CBF, LF and LUF) resulted in higher redness (a*) and yellowness (b*), along with lower brightness (L*) values. Generally, the WI and CL of couscous samples increased significantly (P<0.05) with BWF and legume flour. Also the ash, crude protein, phytic acid, Ca, Mg, K, P, Fe and Zn contents of the couscous increased by BWF and legume flour addition. According to the sensory analysis results, legume flour significantly affected taste-odour, appearance, firmness, stickiness and overall acceptability of couscous (P<0.05). The couscous containing LUF and CF samples had the highest scores for overall acceptability. As a result, BWF and different legume flour can be used in couscous formulation for nutritional enrichment with minimum adverse effect on colour and technologic properties. © 2015 Wageningen Academic Publishers.


Kaya Y.,Bahri Dagdas International Agricultural Research Institute | Turkoz M.,Bahri Dagdas International Agricultural Research Institute
Turkish Journal of Field Crops | Year: 2016

If genotype (G) ranks change from one environment (E) to another, genotype by environment interactions (GEI) reflects the need for testing Gs in numerous Es in order to obtain reliable results. The aim of this study was to compare 16 non-parametric stability statistics (NPSSs) for GEI on grain yields of 15 durum wheat genotypes, consisting of 11 advanced lines selected from Turkish National Durum Wheat Breeding Program (TNDWBP) and four checks, tested in 12 rain-fed environments during the 2 cropping seasons (2009–2010 and 2010-2011) in Turkey. The combined ANOVA indicated that G, E and GEI effects were significant for grain yield. According to analyses of NPSSs, the highest in ranking (TOP), percentage of adaptability (PA), rank mean (RM) and yield-stability (YS) statistics were positively associated with grain yield and therefore characterized under the dynamic concept of stability. In addition, spearman rank correlation analysis revealed that only TOP, PA, RM and YS statistics would be useful for simultaneous selection for high grain yield and stability. Based on the 16 NPSSs used in this study, Dumlupinar cultivar (G15) was both the most stable and one of the highest yielding ones. On the other hand, G5 and G7 were the most stable ones among the advanced lines tested, but their yield performances were lower. As a result, this study showed that the crossing block of TNDWBP should be enriched by germplasm being capable of dynamic stability, wide adaptation and higher yielding. © 2016, Society of Field Crops Science. All rights reserved.


Kaya Y.,Bahri Dagdas International Agricultural Research Institute | Ayranci R.,Ahi Evran University
Genetika | Year: 2016

We evaluated a total of 411 genotypes, including 334 breeding lines with 77 checks from Barley (Hordeum vulgare L.) Breeding Program of Turkey (BBPT), based upon their grain yield (GY) and quality traits (namely protein content-PC, acid detergent fiber- ADF, thousand kernel weight-TKW, kernel size-KS and test weight-TW), during the 5 consecutive cropping seasons, from 2007-2008 to 2011-2012. Broad-sense heritability (H) values for quality traits were moderate (0.57-0.65), while it was low (0.43) for grain yield. Accordingly, grain physical features (namely TW, KS and TKW) were positively significantly correlated with GY, but negatively significantly correlated with PC. Results of our study showed that selection for GY and quality traits was less efficient than we expected, due to undesirable multi-variate correlations such as GY vs PC and low to moderate H values. Therefore, we tried to put suggestions forward to the BBPT, by following discussing about our ability to select for high GY and acceptable quality in barley.


Kaya Y.,Bahri Dagdas International Agricultural Research Institute | Taner S.,Aksaray University
Romanian Biotechnological Letters | Year: 2016

Biomass at early vegetative stage seems to be one of the promising characteristics useful for accelerating yield potential in wheat under the drought conditions. For this propose, landraces are considered as potential genetic resources for improving drought tolerance in wheat. A group of 90 drought tolerant wheat genotypes from Turkey, including 42 landraces, 30 registered cultivars and 18 breeding lines were tested in greenhouse under two moisture regimes, field capacity (FC) of 100 % (nonmoisture stress-NMS) and FC of 50 % (moisture stress-MS), respectively. Biomass was evaluated for genotypic responses to moisture regimes using seven drought tolerance indices (DTI): stress susceptibility index (SSI), mean biomass (MB), tolerance index (TOL), stress tolerance index (STI), geometric mean biomass (GMB), biomass index (BI) and biomass stability index (BSI). It was concluded that three DTIs, (MB, STI and GMP) could be used for selecting genotypes with high biomass and drought tolerant under the MS and NMS regimes, while one DTI (SSI) was suitable for detecting genotypes with high biomass under the MS regime. This study revealed that the majority of the landraces and registered cultivars, carrying landraces in their pedigrees, produced higher biomass than breeding lines under both moisture regimes. © 2016 University of Bucharest.


Kaya Y.,Bahri Dagdas International Agricultural Research Institute | Arisoy R.Z.,Bahri Dagdas International Agricultural Research Institute
Romanian Biotechnological Letters | Year: 2016

Salinity is one of the major constraints to wheat production particularly in rain-fed areas, especially Central Anatolian Plateau (CAP), of Turkey. However, salt tolerance levels in wheat (Triticum aestivum L.) cultivars currently growing in CAP have not been well documented yet. For this purpose, a total of 20 bread wheat cultivars, consisting of 10 rain-fed and 10 irrigated ones, were tested for vegetative stage tolerance to salinity at three different (0, 100 and 200 mM) NaCl concentrations in hydroponic culture. Significant differences (P<0.01) were identified between cultivars in terms of membrane stability (MS) and its injury (MI). Most of the salinity tolerant cultivars were from the rain-fed ones rather than the irrigated ones. Therefore, it may be concluded that there exists a close relationship between salinity and drought tolerances in wheat cultivars where are grown in co-existence of salinity and drought stresses. In addition, biplot method revealed that cultivars can be visually distinguished regarding genotypic responses to salinity.

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