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Horticulturae
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Related Studies on Horticultural Tree Leaves
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Related Studies on Horticultural Tree Leaves

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Fruit Production Systems".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 6869

Special Issue Editor

Dr. Tetsuya Matsukawa

E-Mail Website
Guest Editor
Faculty of Biology-Oriented Science and Technology, Kindai University, 930 Nishimitani, Kinokawa, Wakayama 649-6493, Japan
Interests: antimicrobial phytochemicals; insecticidal phytochemicals; metabolomics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Horticultural tree crops consist of a wide range of plant family including citrus, grape, peach, mango, persimmon etc. The fruits are one of the most important sources of nutrition such as sugars, vitamins and organic acids, and thus, they are commercially important agricultural crops all over the world. Due to the importance, many researches concerning the tree crops have focused on their fruit, and now, many of the fruit crops have been suggested to contain functional and pharmacological compounds as well as nutritional compounds. Despite well-studied fruits of horticultural tree plants, reports focusing biology and physiology of leaves are limited.

It is known that plant leaves play important roles not only as photosynthetic tissues but also as defense barriers against herbivores or pathogens and as sensors of environmental changes, and thus, leaves have developed numbers of functional metabolites to protect against biotic and abiotic stresses. Plant leaves, therefore, one of the most important tissues for understanding the physiology and biology. Moreover, the functional metabolites in leaves usually show pharmacological activities. Knowledge about leaves of them such as responses to herbivores or pathogen and utilization of pruned leaves is therefore necessary to develop the sustainable agriculture. However, as described above, knowledge about horticultural tree leaves is quite limited and is not organized. Therefore, comprehensive information about physiological, biochemical, proteomic and molecular biological data for various plant species could greatly help us to understand the roles and availabilities of leaves of horticultural tree crops. Research articles, reviews, short notes, and opinion articles focused on citrus leaves are welcome for our current Special Issue on “Related Studies on Horticultural Tree Leaves”.


Dr. Tetsuya Matsukawa


Guest Editor

 

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Horticulturae is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Horticultural tree crops
  • antimicrobial
  • anti-herbivore
  • pharmacological activity
  • gene expression
  • proteomics
  • metabolomics

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Published Papers (2 papers)

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Research

19 pages, 1363 KiB  
Article
Combined Sulfur and Nitrogen Foliar Application Increases Extra Virgin Olive Oil Quantity without Affecting Its Nutritional Quality
by Šime Marcelić, Nikolina Vidović, Igor Pasković, Marina Lukić, Maja Jukić Špika, Igor Palčić, Igor Lukić, Marko Petek, Marija Pecina, Mirjana Herak Ćustić, Dean Ban, Kristina Grozić, Marija Polić Pasković, Marin Cukrov, Paula Pongrac and Smiljana Goreta Ban
Horticulturae 2022, 8(3), 203; https://doi.org/10.3390/horticulturae8030203 - 25 Feb 2022
Cited by 4 | Viewed by 3531
Abstract
This study investigates the effect of combined sulfur (S) and nitrogen (N) foliar fertilization on leaf S and N concentration, as well as on the growth of olive fruit and on the quantity and quality of olive oil, obtained from two olive cultivars [...] Read more.
This study investigates the effect of combined sulfur (S) and nitrogen (N) foliar fertilization on leaf S and N concentration, as well as on the growth of olive fruit and on the quantity and quality of olive oil, obtained from two olive cultivars ‘Istarska bjelica’ and ‘Leccino’ in two consecutive years. S and N are some of the most important nutrients, and both play a crucial role in plant oil production. The here-reported fertilization program significantly increased S concentration in leaves without affecting N concentration, which led to an increase in fruit yield and improvement of all fruit morphological parameters. The best oil yield per tree was obtained under the treatment with the highest S/N dose. Oil quality was not affected by S and N supply, and this allowed us to classify all our oil samples as extra virgin (EVOO). Regarding the content of total phenols (TPC) and composition of fatty acid methyl esters (FAME), they remained unaltered under the applied treatments. All investigated fruit morphological parameters, as well as fruit and oil yield, were highly cultivar-dependent. ‘Istarska bjelica’ was characterized as a cultivar with higher fruit mass and pulp percentage, while its stone parameters were lower than those of ‘Leccino’. Consequently, the extraction oil yield obtained from ‘Istarska bjelica’ fruits was much higher. Moreover, environmental conditions had a great impact on fruit and oil quantity. The here-obtained results led us to the conclusion that supply of S and N can enhance oil production without affecting its nutritional quality, a finding that could generate large long-term effects on economic growth in the olive oil sector. Full article
(This article belongs to the Special Issue Related Studies on Horticultural Tree Leaves)
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Graphical abstract

9 pages, 611 KiB  
Article
Techniques for Reducing the Abundance of Spring–Summer Flush Shoots in Southern Spanish Orange Orchards
by Francisco J. Arenas-Arenas, Juan M. Arjona-López, Estefanía Romero-Rodríguez, Rocío Calero-Velázquez and Aurea Hervalejo
Horticulturae 2021, 7(12), 550; https://doi.org/10.3390/horticulturae7120550 - 3 Dec 2021
Cited by 3 | Viewed by 2646
Abstract
The Mediterranean Basin is the second highest citrus growing region in the world behind China. Citrus trees are known to produce several flush shoots per year, particularly during the spring–summer season. Farmers endeavor to reduce the growth of summer shoots by means of [...] Read more.
The Mediterranean Basin is the second highest citrus growing region in the world behind China. Citrus trees are known to produce several flush shoots per year, particularly during the spring–summer season. Farmers endeavor to reduce the growth of summer shoots by means of hand pruning, especially those located at the top of the tree, as most of these shoots become vigorous, nutrient consuming, non-productive, and attractive to several pests. Furthermore, hand pruning substantially increases the costs of citrus orchards production. This research was therefore intended to study new different treatments to control spring–summer flush shoots and thus reduce growers’ investments in citrus production. Six different treatments were applied in two experimental and high density orange orchards over two consecutive years: (1) control; (2) topping (mechanical pruning); (3) dichlorprop-p; (4) triclopyr; (5) topping + dichlorprop-p; and (6) topping + triclopyr. The treatment of dichlorprop-p alone reduced the number of summer young shoots in both years. Moreover, these applications did not negatively affect yield or fruit quality. These mechanical methodologies help citrus growers manage the density of flush shoots and reduce hand labor costs in citrus orchards. Full article
(This article belongs to the Special Issue Related Studies on Horticultural Tree Leaves)
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