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Horticulturae
Special Issues
Citrus Plant Growth and Fruit Quality
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Citrus Plant Growth and Fruit Quality

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

Deadline for manuscript submissions: 31 December 2024 | Viewed by 4278

Special Issue Editors

Prof. Dr. Kwan Jeong Song

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Guest Editor
Faculty of Bioscience and Industry, Jeju National University, Jeju 63243, Republic of Korea
Interests: molecular breeding and physiology in citrus, kiwifruits, and tea plant
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Ji-Hong Liu

E-Mail Website
Guest Editor
Institute of Citrus Science, Huazhong Agricultural University, Wuhan 430070, China
Interests: stress physiology; molecular biology in citrus

Special Issue Information

Dear Colleagues,

Citrus plants take a very important position in the horticulture industry. There have been several changes in their cultivars and cultural techniques over the years. Moreover, the situation of the recent global warming and climate change is getting much worse, and the plant growth and fruit quality are exhibiting different responses to their cultural environment.

The purpose of this Special Issue titled “Citrus Plant Growth and Fruit Quality” is to explore new expertise and technology for the production of high-quality fruits with the efficient management of tree growth to cope with climate change. In this Special Issue, innovative articles on the management of plant growth and fruit quality including tree form and vigor, fruit sets, fruit growth and development, bioactive compounds, the interaction of source and sink activity, and abiotic stress are welcome.

Prof. Dr. Kwan Jeong Song
Prof. Dr. Ji-Hong Liu
Guest Editors

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

  • tree vigor
  • flowering
  • fruit sets
  • fruit maturation and ripening
  • abiotic stress

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (2 papers)

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Research

17 pages, 2598 KiB  
Article
A Study on Sugar Content Improvement and Distribution Flow Response through Citrus Sugar Content Prediction Based on the PyCaret Library
by Yongjun Kim, Yung-Cheol Byun and Sang-Joon Lee
Horticulturae 2024, 10(6), 630; https://doi.org/10.3390/horticulturae10060630 - 12 Jun 2024
Viewed by 821
Abstract
Despite the increasing attention on smart farms as a solution to rural issues such as aging agricultural populations, a shortage of young farmers, decreased production area, and reduced investment leading to stagnant income, exports, and growth rates, many farms still rely on traditional [...] Read more.
Despite the increasing attention on smart farms as a solution to rural issues such as aging agricultural populations, a shortage of young farmers, decreased production area, and reduced investment leading to stagnant income, exports, and growth rates, many farms still rely on traditional methods like cultivating tangerines in open fields. Despite this, increasing farm income requires producing high-quality tangerines and selling them at premium prices, with fruit sweetness being a crucial factor. Therefore, there is a need to examine the close correlation between tangerine quality and sweetness. In this paper, we use deep learning with the PyCaret library to predict and analyze tangerine sweetness using data from seven regions in Jeju and 13 comprehensive factors influencing sweetness, including terrain, temperature, humidity, precipitation, sunlight, wind speed, acidity, sugar-acid ratio, and others. Although applying all 13 factors could achieve over 90% accuracy, our study, limited to seven factors, still achieves a respectable 82.4% prediction accuracy, demonstrating the significant impact of weather data on sweetness. Moreover, these optimistic predictions enable the estimation of tangerine quality and price formation in the market for the coming year, allowing tangerine farmers and related agencies to respond to market conditions proactively. Furthermore, by applying these data to smart farms to control factors influencing tangerine sweetness, it is anticipated that high-quality tangerine production and increased farm income can be achieved. Full article
(This article belongs to the Special Issue Citrus Plant Growth and Fruit Quality)
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16 pages, 5943 KiB  
Article
Mycorrhizal Symbiosis Enhances P Uptake and Indole-3-Acetic Acid Accumulation to Improve Root Morphology in Different Citrus Genotypes
by Chun-Yan Liu, Xiao-Niu Guo, Feng-Jun Dai and Qiang-Sheng Wu
Horticulturae 2024, 10(4), 339; https://doi.org/10.3390/horticulturae10040339 - 29 Mar 2024
Cited by 1 | Viewed by 3120
Abstract
Arbuscular mycorrhizal fungi (AMF) are known to enhance plant growth via stimulation of root system development. However, the extent of their effects and underlying mechanisms across different citrus genotypes remain to be fully elucidated. This study investigates the impact of Funneliformis mosseae ( [...] Read more.
Arbuscular mycorrhizal fungi (AMF) are known to enhance plant growth via stimulation of root system development. However, the extent of their effects and underlying mechanisms across different citrus genotypes remain to be fully elucidated. This study investigates the impact of Funneliformis mosseae (F. mosseae) inoculation on plant growth performance, root morphology, phosphorus (P), and indole-3-acetic acid (IAA) concentrations, as well as the expression of related synthesis and transporter genes in three citrus genotypes: red tangerine (Citrus tangerine ex. Tanaka), kumquat (Fortunella margarita L. Swingle), and fragrant citrus (Citrus junos Sieb. ex. Tanaka). Following 12 weeks of inoculation, significant improvements were observed in plant height, shoot and root biomass, total root length, average root diameter, second-order lateral root development, root hair density, and root hair length across all genotypes. Additionally, F. mosseae inoculation significantly increased root P and IAA concentrations in the three citrus genotypes. Notably, phosphatase activity was enhanced in F. margarita but reduced in C. tangerine and C. junos following inoculation. Gene expression analysis revealed a universal upregulation of the P transporter gene PT5, whereas expressions of the auxin synthesis gene YUC2, transporter gene LAX2, and phosphatase gene PAP1 were commonly downregulated. Specific to genotypes, expressions of YUC5, LAX5, PIN2, PIN3, PIN6, and expansin genes EXPA2 and EXPA4 were significantly upregulated in C. tangerine but downregulated in F. margarita and C. junos. Principal component analysis and correlation assessments highlighted a strong positive association between P concentration, P and auxin synthesis, and transporter gene expressions with most root morphology traits, except for root average diameter. Conversely, IAA content and phosphatase activities were negatively correlated with these root traits. These findings suggest that F. mosseae colonization notably enhances plant growth and root system architecture in citrus genotypes via modifications in P transport and IAA accumulation, indicating a complex interplay between mycorrhizal symbiosis and host plant physiology. Full article
(This article belongs to the Special Issue Citrus Plant Growth and Fruit Quality)
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