1,721,038 research outputs found
In vitro ovule and ovarium culture in watermelon
No full text10th EUCARPIA Meeting on Genetics and Breeding of Cucurbitaceae -- OCT 15-18, 2012 -- Antalya, TURKEYWOS: 000345687100130Unfertilizated ovaries of Halep karasi watermelon genotype were picked on the day of anthesis, one day before anthesis and one day after anthesis. Ovaries were sliced for ovary culture and ovules were extracted from ovaries for ovule culture in sterile conditions. Ovary explants and ovules were cultured on two different (MS and CBM) mediums supplemented with 1 mg/l TDZ (thidiazuron), 1 mg/l SPM (spermin) and 1 mg/l TDZ + 1 mg/l SPM. Ovary explants and ovules were incubated at 25-26 degrees C, having 3000-4000 lux light density, possessing 16/8 h light/dark photoperiod for 8 weeks. After plant regeneration from ovules and ovaries they were transferred to growth regulator free MS and CBM medium. In ovule culture, the highest plant regeneration rate was 2.5% and obtained from MS + 1 mg/l TDZ and CBM + 1 mg/l SPM medium in ovary explants harvested one day after anthesis. The ovary harvest stage was one day after anthesis. The highest plant regeneration percentage in ovary explants was 10% and achieved from MS + 1 mg/l TDZ medium in one day after anthesis period. Totally four plants were obtained from ovary culture. Each plant was coded and cut for propogation. After each line reached 10 plants they were acclimatized and transferred to greenhouse. The pollen formation proved that in vitro regenerated watermelon plants from ovaries were diploid.European Assoc Res Plant Breeding, Cukurova Univ, Minis Food, Agr & Livestock, Turkish Sci & Technol Council, Antalya Tarim, Manier Seed, Yuksel Seed, Syngenta, AG Seed, Fito Seed, Multi Seed, Nunhems, Rijk Zwaan, Bati Akdeniz Agr Res Inst, Alata Hort Res Sta
Citrulline can be used as a biochemical marker in watermelon screening studies for tolerance to drought and salinity
No full text10th EUCARPIA Meeting on Genetics and Breeding of Cucurbitaceae -- OCT 15-18, 2012 -- Antalya, TURKEYWOS: 000345687100049Salinity and drought are two of the most important environmental factors that cause reduction in plant growth, development and productivity worldwide. In the present study, we have investigated the effect of citrulline on drought and salt tolerance in watermelon genotypes. Seeds were germinated in plastic pots containing vermiculite. Plants with three true leaves were subjected to drought and salt stress. Stress responses of the watermelon genotypes were evaluated in early plant development stages. Genotypes were classified according to their citrulline level. Watermelon genotypes with tolerance to salt, KAR-152, KAR-278, KAR-306 and KAR-338, were induced to accumulate citrulline. On the other hand, genotypes with drought tolerance KAR-98, KAR-234, KAR-278, KAR-300, KAR-306 and KAR-374 accumulated higher levels of citrulline than sensitive genotypes. The result of the study, evaluating citrulline as a biochemical marker for salt and drought tolerance of watermelon genotypes is discussed.European Assoc Res Plant Breeding, Cukurova Univ, Minis Food, Agr & Livestock, Turkish Sci & Technol Council, Antalya Tarim, Manier Seed, Yuksel Seed, Syngenta, AG Seed, Fito Seed, Multi Seed, Nunhems, Rijk Zwaan, Bati Akdeniz Agr Res Inst, Alata Hort Res StatUNDP [MDG- F 1680]; Cukurova UniversityCukurova University [ZF2009KAP7, ZF2010KAP1, ZF2011KAP3]The authors want to thank to the UNDP ( United Nation Development Programme) for supporting our work with " MDG- F 1680 UN joint programme on enhancing the capacity of Turkey to adapt to climate change". Many thanks also Cukurova University for the financial supports of ZF2009KAP7, ZF2010KAP1 and ZF2011KAP3 projects. Also many thanks to K.Suyum, G. Aydoner, M. Akyol, Y. Akhoundnejad and A. Bol for helping to grow plants in the greenhouse
Determining the agronomic characteristics of Turkish watermelon genotypes for developing breeding lines
No full text10th EUCARPIA Meeting on Genetics and Breeding of Cucurbitaceae -- OCT 15-18, 2012 -- Antalya, TURKEYWOS: 000345687100046Watermelon is an important vegetable in Turkey with approximately four million tonnes of annual production. Despite a wide range of morphological diversity in Turkish watermelons, mainly imported hybrid watermelon cultivars are used in production due to high yield and quality. The watermelon genebank in the Department of Horticulture in Cukurova University consists of 475 accessions collected from different regions of Turkey and provided from different genebanks of the world. These watermelon genetic resources were morphologically characterized, elite accessions that were chosen and self-pollinated for use in breeding studies. The aim of this study was to evaluate the horticultural characteristics of promising watermelon genotypes for two years. Length of main stem, diameter of main stem, number of branches per plant, number of nodes on main stem, yield, fruit weight, fruit length, fruit diameter, rind thickness and total soluble solids were measured in all genotypes. Data analysis indicated that the Turkish genotypes had high diversity for plant and fruit characteristics.European Assoc Res Plant Breeding, Cukurova Univ, Minis Food, Agr & Livestock, Turkish Sci & Technol Council, Antalya Tarim, Manier Seed, Yuksel Seed, Syngenta, AG Seed, Fito Seed, Multi Seed, Nunhems, Rijk Zwaan, Bati Akdeniz Agr Res Inst, Alata Hort Res StatCukurova University, Unit of Scientific Research Projects [ZF 2010BAP31]This research was supported by Cukurova University, Unit of Scientific Research Projects (Project no: ZF 2010BAP31
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Seed characteristics and seedfruit correlation of Turkish watermelon germplasm
No full textThis study was carried out at the Department of Horticulture, Faculty of Agriculture, University of Cukurova. Totally, 327 genotypes were used which mostly collected from different regions of Turkey since 1993. Seed weight, seed length and seed width of 15 seeds per genotype were measured. The seed weight, length, and width ranged from 20 to 211 mg, 5.03 to 16.63 mm and 3.39 to 9.53 mm, respectively, among genotypes. Nine genotypes were selected based on seed size (3 small, 3 medium, 3 big) in order to evaluate correlation between seed and fruit characteristics. Correlation analysis was performed between measured seed parameters and fruit weight, length and diameter in the nine genotypes. Measured seed parameters were negatively correlated with fruit weight, length and diameter while seed weight was positively correlated with seed lengt
Evaluation of genetic relationships on single, triple and double cross melon (Cucumis melo var. cantalupensis) hybrids by SSR markers
No full text10th EUCARPIA Meeting on Genetics and Breeding of Cucurbitaceae -- OCT 15-18, 2012 -- Antalya, TURKEYWOS: 000345687100081This study was conducted to determine the quantitative characteristics of 53 hybrid melon genotypes which were obtained by single, triple, double hybridization and to compare the genetic relationship between single, triple and double hybrids and their parental pure lines by SSR markers. In molecular studies, 55 Simple-sequence repeat (SSR) markers were screened and polymorphism among single, double and triple hybrids were compared. Eight of 55 SSR primers used for screening were found polymorphic. Similarity rate was found to be between 0.54-1.00 according to the results of SSR analysis.European Assoc Res Plant Breeding, Cukurova Univ, Minis Food, Agr & Livestock, Turkish Sci & Technol Council, Antalya Tarim, Manier Seed, Yuksel Seed, Syngenta, AG Seed, Fito Seed, Multi Seed, Nunhems, Rijk Zwaan, Bati Akdeniz Agr Res Inst, Alata Hort Res StatCukurova University Research Funds [ZF2007D20]The authors thank Cukurova University Research Funds for financial supports ( Project No: ZF2007D20) and Prof. Dr. Sedat Serce from Mustafa Kemal University of Turkey for his contribution to data analysis
Genetic transformation in melon
No full text10th EUCARPIA Meeting on Genetics and Breeding of Cucurbitaceae -- OCT 15-18, 2012 -- Antalya, TURKEYWOS: 000345687100079Melon is one of the species in Cucurbitaceae which has intense transformation researches for two decades. We review here the various approaches reported in the literature. A. tumefaciens was used mainly in melon transformation studies. Few studies were reported by using particule bombardment, A. rhizogenes and Zucchini yellow mosaic potyvirus-vector. In last years, new methods named ovary injection, pollen tube pathway and new genes called marker-free and vector-free genes were used in melon transformation studies.European Assoc Res Plant Breeding, Cukurova Univ, Minis Food, Agr & Livestock, Turkish Sci & Technol Council, Antalya Tarim, Manier Seed, Yuksel Seed, Syngenta, AG Seed, Fito Seed, Multi Seed, Nunhems, Rijk Zwaan, Bati Akdeniz Agr Res Inst, Alata Hort Res Sta
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