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Improvement on The Ellis and Roberts Viability Model Full text
2016
Guoyan Zhou | Feifei Zhang | Shaoyun Wu
With data sets of germination percent and storage time of seed lot of wheat and sorghum stored at three different storage temperature(t, °C) with three different water content (m, %) of seeds, together with data set of buckwheat and lettuce reported in literatures, the possibility that seed survival curve were transformed into line by survival proportion and the relationship that logarithm of average viability period (logp50) and standard deviation of seed death distribution in time (δ)with t, m and interaction between t and m were analysed. Result indicated that survival proportion transformed seed survival curve to line were much easier than the probability adopted by Ellis and Roberts, and the most important factor affecting logp50 and δ of seed lot was interaction between t and m. Thus, Ellis and Roberts viability model were suggested to be improved as Ki=Vi-p/10K-CWT (t×m) to predict longevity of seed lot with initial germination percent unknown, a new model of Gi/G0=A-P/10K-CWT(t×m) was constructed to predict longevity of seed lot with initial germination percent already known.
Show more [+] Less [-]Ultrasonic Carcass Assessment of Dorper and Dorper x Merino Lambs Using MLD and Body Measurements Full text
2016
Onur Yılmaz | Sezen Ocak | Sinan Ogun
Ultrasonic measurements of Musculus longissmus dorsi thoracis et lumborum (MLD) were taken of Dorper (n=99) and Dorper x Merino (n=65) lambs at 156 days of age and comparisons made to various body dimensions to ascertain whether sex, genotype, birth type and live weight had any effect on these parameters. Lambs were weaned two months after birth and placed ad libitum on basic dry land pasture during the draught spring and summer months of 2014 in the arid southeastern region of Turkey. Least square means of backfat thickness, skin+backfat thickness, muscle depth, body length, chest girth and live weight, at the mean age of 156 days, were 0.17 cm, 0.32 cm, 1.75 cm, 63.30 cm, 72.37 cm and 25.16 kg, respectively. Genotype was a statistically significant factor in terms of back fat thickness (BFT), skin and backfat thickness (S+BFT), muscle depth (MD), body length (BL) and live weight (LW). The study showed that Dorper and Dorper x Merino genotypes into Turkey show a clear advantage over the native breeds in terms of meat production and quality not to mention the high potential for lean carcass production. Ultrasonic measurements of Longissimus thoracis et lumborum (MLD) will provide an important contribution to selection index in breeding programs for Dorper and Dorper crossbred genotypes. However estimation of genetic parameters are required in containing a pedigree database in order to establish an effective selection index.
Show more [+] Less [-]Factors Affecting Dairy Farmers’ Application of Agricultural Innovations: A Case Study from Muğla Province Full text
2016
Tayfun Çukur
The main objective of this study is to determine the factors affecting the application of innovations for dairy farmers in the Milas district, Muğla province, Turkey. Data from 71 dairy farmers and the Multinominal logit model are used for this study. The dependent variable of the model is divided into three categories; “I don’t apply any agricultural innovations”, “I apply agricultural innovations only after other farmers apply and express their positive opinion” and “I apply agricultural innovations”. In conclusion of the analysis, the comparisons are done with the farmers who “do not apply any agricultural innovations,” and the farmers who “apply agricultural innovations only after other farmers apply and express their positive opinion”; it is determined that a one unit increase in educational level raised the likelihood of applying innovations after receiving positive opinion. When the farmers that “apply agricultural innovation”, and that “apply agricultural innovations only after other farmers apply and express their positive opinion” are compared, it is found that a one unit increase in the number of milking animals had increased the likelihood of applying the innovations.
Show more [+] Less [-]Sustainability Organic Agriculture and Livestock Production with Respect to European Union in Eastern Anatolia and East Black Sea Regions Full text
2016
Vecihi Aksakal | Sümer Haşimoğlu | Bahri Bayram | Yaşar Erdoğan | Hilal Ürüşan Altun | Mahir Murat Cengiz
The majority of farm households in Turkey and especially the Eastern Anatolia are still based on low-input semi subsistence agriculture and livestock production. Despite a slow decline in recent years, agriculture and livestock production remains a major employer in Turkey and it is a significant contributor to the country’s gross domestic product, GDP. Whist Turkey is one of the EU candidate countries, is self sufficient in food production and Turkish agriculture is poorly structured inefficient, with farming in the Eastern Anatolia being mainly subsistence farming. Yet, these traditional rural structures combined with poor access to low level of education and low level of off-farm unemployment problem makes the situation more complicated and unsustainable. The best way to promote sustainability, better and higher production of Eastern Anatolian and rural Turkey is to invest in the local people, villages through improved, continuing and effective agricultural and livestock programs in particular. Investment in human capital especially in the rural areas leads to more employment opportunities through entrepreneurship and innovation in organic agriculture and livestock production. A holistic approach to developing and improving supply chains could unlock the potential for sophisticated, state-of-the-art organic agriculture and livestock producers and businesses in the region to become EU and global players. Eastern Anatolian livestock producers and the farmers have the ambitions to take part in future progress because the region is naturally organic not by design but default. It is for sure that present potential of the region has not been fully determined and utilized. EU has greatly benefited from previous enlargements economically, politically and socially. When European Union (EU) and Turkish Government relations considered and accession of Turkey to EU would be the logical consequence of the previous accessions. The screening on chapter 11 (Agriculture and rural development) is one of the important criteria and Turkey is working on to meet these benchmarks.
Show more [+] Less [-]A New Pest in Tomato Production: Lasioptera sp (Diptera:Cecidomyiidae) Full text
2016
Nurdan Topakcı | Utku Yükselbaba
Tomato is one of the most important vegetable crop which is widely grown in the world. Economic yield loses due to several insect species has been reported on tomato production. In recent years, a new pest Lasioptera sp, which causes significant damage in tomato production area has emerged. The pest has first been reported in tomato production areas of Mersin district in 2012 after it has been reported in Greece. This pest belongs to the family Cecidomyiidae and is causing damage in the stems and on the fruits of tomato. The larva feeds inside of the stem, so this makes management of the pest difficult. There are no adequate studies on integrated pest management on this pest. This report clearly showed that detailed studies on the biology and management of this pest in the tomato production should be done.
Show more [+] Less [-]Elemental Composition of Soils Mixed with the Grape Molasses Full text
2016
Aslı Kurnaz | Şeref Turhan | Muazzez Gezelge | Aybaba Hançerlioğulları | Mehmet Atıf Çetiner
Molasses, which is a traditional food substance obtained by boiling the fruit with local procedures and is abundantly eaten by Turkish people, are commonly produced from grapes. Zile, which is county of Tokat city placed in Central Black Sea region, is famous with molasses in Turkey. A special soil called as molasses soil containing CaO is added into to molasses in order to resolve acidification during production process. The purpose of this study is to determine the element concentration levels in grabe molasses soil samples collected from Zile by using energy dispersive X-ray fluorescence spectrometry (EDXRF). For this purpose, thirty-eight elements and eleven oxides were detected in molasses soil samples. The average concentrations of six major oxides (MgO, Al2O3, SiO2, K2O, CaO and Fe2O3) were found as 1.58%, 7.96%, 17.01%, 1.01%, 30.52% and 8.72%, respectively. Also, the average concentrations of three minor (Na2O, P2O5 ,TiO2) and two trace (SO3, MnO) oxides were found as 0.96%, 0.12%, 0.95% and 0.04%, 0.1%, respectively.
Show more [+] Less [-]A Current Approach in Animal Breeding: CRISPR/Cas9 Genome Modification System Full text
2016
Fatih Bilgi | Zeynep Demirtaş | Levent Mercan
Genome modifications include potential about providing significant advantages on increasing yield performance and developing resistance to diseases. Gene editing methods that provides silencing or expressing of a gene which is an individual already has, have important potential for improving genetic structure without environmental effects. In recent times, new gene editing systems were developed. These are ZFNs (Zinc Finger Nucleases), TALENs (Transcription Activator-like Effector Nucleases) and CRISPR/Cas nuclease systems. CRISPR/Cas system is a microbial immune system that uses RNA guided nucleases for destroying genetic materials and its potential usage like a simple and efficient gene editing mechanism in animals is being evaluated recently. In this review, we summarized CRISPR/Cas9 system and its usability in animal breeding
Show more [+] Less [-]Prevalence of Staphylococcus aureus Isolated From Various Foods of Animal Origin in Kırşehir, Turkey and Their Enterotoxigenicity Full text
2016
M. Dilek Avşaroğlu
The aim of this study was to detect Staphylococcus aureus contamination to different types of animal origin foods collected in the Kırşehir province of Turkey and to examine their enterotoxin production ability. Out of 120 food samples 38 suspected colonies were obtained and 23 of them were identified as S. aureus by biochemical and molecular analyses. Other species detected were S. chromogenes, S. cohnii ssp. cohnii, S. hominis, S. lentus, S. warneri, and S. xylosus. The isolates were also analysed with regard to carry mecA gene. None of them was found to have mecA gene indicating susceptibility to methicillin. To determine the enterotoxigenic ability of the isolates phenotypically, reversed-passive-latex-agglutination test against SEA-SED was used. Six out of 23 S. aureus isolates were determined to produce SEA, SEC and SED. Three of them had only one enterotoxin production, whereas others had SEA and SED production together. The results of phenotypic analyses were confirmed by PCR based examination. None of the coagulase-negative staphylococci were found to be enterotoxigenic by both phenotypical and PCR-based analyses. In conclusion, enterotoxigenic S. aureus is a risk in foods of animal origin in Kırşehir and its counties.
Show more [+] Less [-]Year-to-year Variations in Antioxidant Components of High-Lycopene Tomato (Solanum lycopersicum L.) Breeding Lines Full text
2016
Riadh Ilahy | Mohammed Wasim Siddiqui | Gabriella Piro | Marcello Salvatore Lenucci | Chafik Hdider
A two-year field study (2013−2014) was performed to evaluate phytochemical content and antioxidant activity of two high-lycopene tomato breeding lines (HLT-F71 and HLT-F72) grown under open field conditions as compared to the traditional cultivar (cv) Rio Grande. Two open-field trials were conducted in 2013 and 2014. Three tomato cvs were used: two high-lycopene tomato advanced breeding lines (HLT-F71 and ‘HLT-F72’) (F7 generation), and the open-pollinated cv Rio Grande commonly grown in Tunisia. Regardless the growing years and cvs, lycopene content ranged from 98.8 to 280.0 mg/kg fw, total phenolics from 176.1 to 831.8 mg GAE/kg fw flavonoids from 169.7 to 552.1 mg RE/kg fw and total vitamin C from 183.4 to 370.0 mg/kg fw. Significant year-to-year variability was only detected in total phenolics and flavonoid content. No significant year-to-year variability in antioxidant activity was detected in high-lycopene lines. Disregarding the cv, tomato berries harvested on July 2014 had 143% - 224% higher total phenolics and 8% to 47% higher flavonoid contents compared to tomato berries harvested on July 2013. However, disregarding the cv, tomato berries harvested on July 2013 had 6% -17% higher lycopene and 8% -21% higher LAA compared to berries harvested on 2014. During the second growing year, the higher temperature, particularly prior to harvest, determined a decrease in lycopene content and a significant increase in total phenolics regardless the cv. Although the huge variability in total phenolics and the decrease in lycopene content during the second harvest, the antioxidant activity was not affected by year-to-year variability. This reveals consistent functional quality of these cvs and minimal genotype*environmental conditions interaction.
Show more [+] Less [-]Genetic Variation for Biofortifying The Maize Grain Full text
2016
Gönül Cömertpay | Faheem Shehzad Baloch | Halil Erdem
The maize germplasm variation is valuable for breeders to develop elite hybrids with increased mineral contents in the maize grain to eliminate mineral malnutrition, which is referred as HIDEN HUNGER. Therefore, we aimed to determine mineral element diversity of maize landraces collected from different geographical regions of Turkey. There was huge diversity for all mineral traits and other quality traits. Turkish maize landraces showed high variation for Zn (17-41.34 mg kg-1), Fe (13.52-29.63 mg kg-1), Cu (0.77-3.34 mg kg-1), Mn (5.68-14.78 mg kg-1), Protein (6.6-11.6%), starch content (73.3-80.0%), oil content (3.15-4.7%) and thousand grain weight (177.0-374.9g). There were significant positive and negative associations among mineral elements and quality traits. The principal component analysis differentiated some maize landraces from the rest, and these diverse landraces could be used in the maize breeding program with biofortification purpose.
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