Ahmed, Mahasin

Kanski, Larissa

Naumann, Marcel

Pawelzik, Elke

English

JKI Open Journal Systems (Julius Kühn-Institut)

11th Young Scientists Meeting 2018, Braunschweig, Germany, November 14-16 Kanski et al. Evaluation of two tomato crosses and their parents with a sensory panel and analytical measurements  Larissa Kanski1, Mahasin Ahmed2, Marcel Naumann1 and Elke Pawelzik1 1 University of Goettingen, Division Quality of Plant Products, Goettingen 2 University of Khartoum, Faculty of Agriculture, Department of Agricultural Engineering, Khartoum E-mail of corresponding author: lkanski@uni-goettingen.deTomato is the most popular vegetable in Germany and it is one of the most con-sumed horticultural crops in the world. Tomatoes have high nutritional value as they are rich in vitamins and antioxi-dants. At the same time, consumers are not satisfied with the taste of fresh toma-toes and complain about their poor fla-vor. Conventional breeding programs have mainly focused on yield, firmness, and long shelf-life, which may have caused a decrease in flavor acceptance. In recent decades, consumer preferences have changed towards sustainable prod-ucts with an increased focus on the sen-sorial quality of the products. The flavor of the tomato is a complex interaction of taste and aroma. Volatile aroma com-pounds define the typical flavor of the to-mato. Major contributors to the taste of tomatoes include sugars and acids. The amounts of sugars and acids not only in-fluence the taste but also the overall fla-vor of tomatoes and are, therefore, im-portant parameters for consumer ac-ceptance. The concentrations of sugar and acid and their ratio in the fruit are de-termined by the cultivar and environ-mental conditions. Within the PETRAq+n project (participatory development of quality tomatoes for sustainable regional production), the goal is to create a scien-tific basis to breed tomato cultivars with improved quality and optimal adaption for sustainable regional and urban pro-duction in Lower Saxony. During the sum-mer of 2018, two tomato crossbred off-spring in the F4-generation and their par-ents were cultivated in an organic low-in-put production system. The evaluated crosses were combinations of parental cultivars with high yield and good quality parameters, which showed positive re-sults in breeding sensory evaluation and analytical measurements in the first ex-perimental year in 2017. A trained sen-sory panel evaluated important fruit quality attributes such as color, sweet-ness, sourness, skin strength, and fruit juiciness. The sensory results were com-pared with results of the physio-chemical analysis of total soluble solids (TSS), ti-tratable acidity (TA), texture, and color measurements. The present study com-pares the quality traits of the crosses and their parents with a trained sensory panel and shows whether the results of analytical measurements reflect the re-sults of the human senses and whether the crosses show improved quality attrib-utes compared to their parents.68 Berichte aus dem Julius Kühn-Institut 200

Evaluation of two tomato crosses and their parents with a sensory panel and analytical measurements

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Evaluation of two tomato crosses and their parents with a sensory panel and analytical measurements

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