580 Pflanzen (Botanik)
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For several decades, improved flavour has not been a main focus in tomato breeding because it is difficult and expensive to evaluate. Sensory panels are designed to assess flavour, but they are not able to evaluate large sample numbers typical for early breeding generations. Selection in the first segregating generation could enhance breeding for flavour by preventing the loss of favourable alleles. The efficiency of early selection is unknown due to the polygenetic inheritance of flavour. To address these issues, F2 plants from 32 crosses and their parents (910 individuals) were evaluated for aroma, sweetness and sourness with the Breeders' Sensory Test (small team and large number of small samples from individuals), as well as for physicochemical traits (total soluble solids, titratable acidity and dry matter), and volatile compounds in low‐input organic and hydroponic cultivation. Corresponding physicochemical and sensory traits were significantly correlated. For most of the studied traits, it was possible to select between single plants in the F2 generation. Thus, the Breeders' Sensory Test can be used as a new tool in breeding for flavour.
HighlightsLaser energy, type of marking on the product and product color affected the Data Matrix detectionHigh laser marking energy resulted in ablation, browning and carbonizationWorking direction of the laser beam affected the print growth of the Data MatrixProposed algorithm successfully decoded the barcodes on Golden Delicious applesAbstract. Product marking in horticulture aims at providing robust and permanent means of marking products and preventing theft, tampering and cheating by customers. Direct part marking has sought to provide solutions to these problems. However, unlike in industry where it has been successful, in horticulture there are still a lot of challenges that prevent successful marking and reading of directly marked barcodes on horticultural products. The laser energy, barcode size, product color and days of storage are important factors that affect the marking, quality and readability of directly marked Data Matrix (DM) on apples. Therefore, the objective of this study was to solve the aforementioned problems with these factors by using Synrad 48-5 CO2 laser (10,600 nm), to mark some apples using low energy levels. Laser energy, the skin of the product and the inertia of the laser beam affected the printing of the DM on the apples. Incomplete marking of the DM at some of the energies used resulted in the DM not being decoded. Generally, there was successful decoding on Golden Delicious compared to Kanzi and Red Jonaprince for 10 days of storage. On the average, the smaller barcode size produced a better detection of the code than the bigger size. The better detection on Golden Delicious can be attributed to the better contrast between the DM and its color. As the days of storage increased, detection decreased for Kanzi and Red Jonaprince. There is a future prospect for directly reading marked apples in real production systems. Keywords: Apple, Apple skin, Barcode size, Data matrix, Laser, Product marking.
Dachbegrünungen - insektenfreundlich gestaltet - können einen Beitrag zum Natur- und Klimaschutz leisten. Sie erfahren, welche heimischen Wildpflanzen sich für extensive Dachbegrünungen eignen und welchen Nutzen diese für blütenbesuchende Insekten und andere Tiere haben. Zudem erhalten Sie Informationen, welche Anforderungen hinsichtlich der Statik und des Gründachaufbaus beachtet werden müssen und wie sich mithilfe von Strukturelementen der "Lebensraum Gründach" auch auf Bestandsgebäuden aufwerten lässt. Die Informationen basieren auf den Ergebnissen des Projekt DaLLî der Hochschule Osnabrück.