Journal of Applied Botany and Food Quality <p>This journal is published in collaboration with the German Society for Quality Research on Plant Foods and the Section Applied Botany of the German Botanical Society. It focuses on applied research in plant physiology and plant ecology, plant biotechnology, plant breeding and cultivation, phytomedicine, plant nutrition, plant stress and resistance, plant microbiology, plant analysis (including -omics techniques), and plant food chemistry.</p> en-US Journal of Applied Botany and Food Quality 1613-9216 <p>From Volume 92 (2019) on, the content of the journal is licensed under the&nbsp;<a href="">Creative Commons Attribution 4.0 License</a>. Any user is free to share and adapt (remix, transform, build upon) the content as long as the original publication is attributed (authors, title, year, journal, issue, pages) and any changes are labelled.</p> <p>The copyright of the published work remains with the authors. If you want to use published content beyond what the CC-BY license permits, please contact the corresponding author, whose contact information can be found on the last page of the respective article. In case you want to reproduce content from older issues (before CC BY applied), please contact the&nbsp;corresponding author to ask for permission.</p> Growth, development and quality of Passiflora tripartita var. mollissima fruits under two environmental tropical conditions <p>The curuba (<em>Passiflora tripartita</em> var. <em>mollissima</em>) is an important Andean fruit in bioprospecting industries because of its pleasant taste and aroma, antioxidant potential and sedative action. The objective of this study was to evaluate the development of curuba plants and the physicochemical characteristics of fruits under two environmental tropical altitudinal conditions. Crops were established in a low zone (2,006 m.a.s.l.) and a high zone (2,498 m.a.s.l.) in the municipality of Pasca (Cundinamarca, Colombia). Phenological monitoring was carried out in the principal growth stages. The weight, length, diameter, color, firmness, pH, total soluble solids, total titratable acidity and organic acid content were measured in the fruits. Climatic parameters were monitored during the crop cycle, and base temperatures and thermal times were estimated. The temperature and photosynthetically active radiation (PAR) were the climatic factors that had the greatest effect on plant development. The base temperatures of growth of the primary branches, floral buds and fruits were 4.3°C, 3.1°C and 0.01°C, respectively. In the lower zone, the plants accumulated more growing degree days than in the upper zone. The fruits in the upper zone presented a higher weight, total titratable acidity and ascorbic acid content. The plants presented a marked response to the differential agroecological conditions of the two sites.</p> Gerhard Fischer Mildred Mayorga Luz Marina Melgarejo Alfonso Parra-Coronado Copyright (c) 2020 The Author(s) 2020-04-03 2020-04-03 93 66 75 10.5073/JABFQ.2020.093.009 Propagation potential for the conservation of Brackenridgea zanguebarica Oliv., a critically endangered plant species endemic to Vhembe District in Limpopo Province (South Africa) <p><em>Brackenridgea zanguebarica</em> Oliv. is an important multipurpose tree valued for its medicinal uses in Vhembe District. The unsustainable harvesting coupled with poor seed germination in the wild is threatening its regeneration; which poses a challenge in efforts to its conservation. This study was conducted to identify suitable methods for propagating <em>B. zanguebarica</em> species using seeds and stem cuttings. Seeds propagation was carried out to evaluate the effect of various pre-treatments. Vegetative propagation was tested to assess if <em>B. zanguebarica</em> could be successfully propagated via stem cuttings with appropriate treatments. The results showed that <em>B. zanguebarica</em> seeds did not germinate at all under any of the conditions tested. Stem cuttings presented a possibility of propagating this species despite the poor results obtained, where 51% of cuttings across all treatment produced buds and 17% only developed leaves without any root development. The growth media had insignificant (P &gt; 0.05) effect on some vegetative growth parameters, while growth hormones showed significant (P &lt; 0.05) effect in all the vegetative growth parameters of stem cuttings where IAA performed better than IBA and NNA. However, their interaction were significant (P &lt; 0.05) on all the growth parameters of Brackenridgea zanguebarica stem cuttings except on the percentage of cuttings that produced buds (P = 0.107). The findings showed that <em>B. zanguebarica</em> is difficult to propagate sexually and asexually, hence, further studies are needed to identify suitable methods for both seed and vegetative propagation of this plant.</p> Makuete Andre Patrick Tiawoun Milingoni Peter Tshisikhawe Eastonce Tendayi Gwata Copyright (c) 2020 The Author(s) 2020-03-30 2020-03-30 93 59 65 10.5073/JABFQ.2020.093.008 Effect of moisture-proof corrugated boxes on water loss from cabbage during storage <p>Reducing water loss from cabbages during storage is essential to extend the shelf life of this widely consumed horticultural crop. In this study, we evaluated the effect of moisture-proof corrugated boxes (MPBs) on water loss from cabbages during storage. We first evaluated the water vapour barrier property of MPB material and found it to be superior to that of conventional corrugated box (CCB) material. Cabbages were then stored in MPBs and CCBs for 9 days, during which their water loss was measured. Cabbages stored in MPBs showed significantly less water loss than those in CCBs. Moreover, storage in the MPBs did not negatively affect the fundamental qualities of the cabbages, such as the green colouration, the soluble solid content, and the ascorbic acid content. The use of MPBs was demonstrated to be an effective and viable way to reduce water loss from cabbages during storage.</p> Daniel Z. K. Wambrauw Yuko Sato Naoki Sugino Saki Matsumoto Ling Li Hiroaki Kitazawa Copyright (c) 2020 The Author(s) 2020-03-04 2020-03-04 93 54 58 10.5073/JABFQ.2020.093.007 Effects of soil warming and altered precipitation patterns on photosynthesis, biomass production and yield of barley <p>Crop productivity and plant physiology are affected by rising temperatures and altered precipitation patterns due to climate change. We studied the impacts of an increase in soil temperature of 2.5 °C, a decrease in summer precipitation amount of 25%, a reduction in summer precipitation frequency of 50%, and their interactions on photosynthesis, biomass production, and yield of spring barley (<em>Hordeum vulgare</em> L. cv. RGT Planet) in a temperate agricultural ecosystem near Stuttgart (Germany). Leaf gas exchange of barley appeared to be affected mainly by drought in the form of reduced precipitation frequency or by a combination of changes in soil temperature and precipitation patterns. In contrast, biomass production and yield parameters were more affected under soil warming alone. In addition, biomass of roots increased under soil warming at stem elongation. Stable grain yield was observed under reduced precipitation amount and also under increased evaporation through soil warming. These findings provide additional evidence that barley is relatively drought tolerant, which should be taken into consideration in the context of appropriate crop selection under climate change.</p> Ireen Drebenstedt Iris Schmid Christian Poll Sven Marhan Robert Kahle Ellen Kandeler Petra Högy Copyright (c) 2020 The Author(s) 2020-03-04 2020-03-04 93 44 53 10.5073/JABFQ.2020.093.006 Effect of potassium fertilization on the contents of antioxidants in three cocktail tomato cultivars <p>Tomatoes are an important source of health beneficial phytochemicals, which act as antioxidants such as ascorbic acid, phenolic compounds, carotenoids, and tocopherols. The content of antioxidants is influenced, among others, by abiotic stress factors, like the nutritional status. Potassium (K) is a macronutrient, which is essential for several physiological functions in plants, for example, translocation of assimilates, activation of enzymes, maintenance of turgescence, and stomata regulation. The aim of this study was to investigate the effect of increasing K fertilization on the concentration of antioxidants in cocktail tomatoes. Therefore, three tomato cultivars (Primavera, Resi, and Yellow Submarine), grown in an outdoor pot experiment, were fertilized with increasing K doses for two consecutive years. It was confirmed that antioxidants in tomato fruit can be affected by the K regime, but was also shown that other factors may reduce or even inverse those effects when cultivation takes place in an uncontrolled outdoor environment. Most consistent K fertilization effects were found for naringenin, <em>p</em>-coumaric acid and caffeic acid. However, enrichment of tomatoes with antioxidants by K fertilization is cultivar dependent and, therefore, general statements should be avoided.</p> Frederike Else Helene Sonntag Diana Bunzel Sabine Kulling Ina Porath Franziska Pach Elke Pawelzik Inga Smit Marcel Naumann Copyright (c) 2020 The Author(s) 2020-03-04 2020-03-04 93 34 43 10.5073/JABFQ.2020.093.005