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The present studywas carried out during 2011-2013 under open-field cultivation conditions to find out the effect of black plastic, agro-textile and sawdust mulch types on yield and quality of organically grown strawberries (Fragaria x ananassa Duch.) cv. 'Monterey', 'Albion', 'Aromas', 'Camarosa' and 'Sweet Charlie'. The yield per plant, fruit weight and diameter, firmness, total soluble solids, titratable acidity, pH and fruit skin color were measured. At the end of the study, it was determined that the plant yield and fruit quality were affectedby the genotypes and mulch types . The highest values were obtained from the 'Monterey' in terms of yield per plant (696.90 g / plant), fruit weight (18.40 g / fruit) and fruit diameter (37.05 mm). Among different types of mulches, textile mulch was found to be superior in terms of yield per plant (486.11 g / plant) and fruit diameter (31.92 mm). The effect of genotype and mulch type on the average values of acidity, pH and fruit firmness were statistically significant. While the fruit skin color L, chroma and hue values were found significantly different for the genotypes, it was determined that the difference of mulch type significantly affected only the hue angle. [ABSTRACT FROM AUTHOR]

Abstract: Turkey has a rich walnut germplasm that has arisen from populations of naturally grown seedlings over many years. Despite this enormous genetic potential, only a few studies on molecular characterization studies have been carried out so far. In this study, the genetic relationships among 59 walnut genotypes and cultivars of international and Turkish interest were analyzed by 25 RAPD primers, 25 ISSR primers, and 16 SSR primer pairs. Among the molecular assays tested, SSR provided a very high polymorphism rate of 99.1%, while ISSR and RAPD results showed similar to each other but lower polymorphism (71.1% and 69.1%, respectively). The dendrogram constructed divided the genotypes into three main groups: ‘Group A’ included mainly genotypes originating from the Kahramanmaras and Yalova provinces, while ‘Group B’ contained genotypes originating from the Kırsehir, Tokat and Corum provinces of Turkey. ‘Group C’ contained only cultivars originating from the USA and France. According to the clustering in the dendrogram genotypes grouped largely in accordance with their geographical origin, although certain exceptions were present. The pairs of ‘Akca-2’ with ‘Karabodur’ and ‘Yalova-1’ with ‘Yalova-3’ were the most closely related walnut genotypes in this study. In conclusion, our study indicated that molecular markers are useful tools for use in to determining genetic relationships among walnut genotypes. The results will provide valuable information to walnut cultivar breeding programs for use in parental selection. [Copyright &y& Elsevier]