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Horticulturae
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Advanced Studies in Cultivation and Breeding of Apple
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Advanced Studies in Cultivation and Breeding of Apple

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

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 4709

Special Issue Editors

Prof. Dr. Yuanyuan Li

E-Mail Website
Guest Editor
College of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
Interests: fruit quality; regulation; anthocyanin; cuticle formation
Dr. Han Jiang

E-Mail Website
Guest Editor
College of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
Interests: fruit quality; sugar metabolism; signaling

Special Issue Information

Dear Colleagues,

Apple is one of the most commonly planted fruit species in the world and is consumed in many forms. Growers of this long-lived perennial must produce fruit of high yield and adequate quality while also combatting abiotic and biotic stress. These characters are very important for the development of the apple industry. The goal of many apple cultivation and breeding programs is to combine high yield and fruit quality with disease resistance.

The purpose of this Special Issue “Advanced Studies in Cultivation and Breeding of Apple” is to present innovative articles on the cultivation and breeding of apples from international researchers.

Prof. Dr. Yuanyuan Li
Dr. Han Jiang
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.

Published Papers (2 papers)

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Research

12 pages, 2716 KiB  
Article
Artificial Neural Network Based Apple Yield Prediction Using Morphological Characters
by Bharti, Pankaj Das, Rahul Banerjee, Tauqueer Ahmad, Sarita Devi and Geeta Verma
Horticulturae 2023, 9(4), 436; https://doi.org/10.3390/horticulturae9040436 - 28 Mar 2023
Cited by 1 | Viewed by 2606
Abstract
The yield of the crop is a complex function of a number of dependent traits, which makes yield prediction a statistically difficult task. A number of work on yield prediction using morphological characters already exists in the literature. Most of the work used [...] Read more.
The yield of the crop is a complex function of a number of dependent traits, which makes yield prediction a statistically difficult task. A number of work on yield prediction using morphological characters already exists in the literature. Most of the work used statistical techniques such as linear regression and crop yield models, which assume a linear relationship between yield and the morphological traits; in actual practice, such a linear relationship is seldom achieved. With the advancement in the field of machine learning techniques, these methods can provide a viable alternative for dealing with nonlinear relationships for yield prediction. Globally, apples are the most consumed fruit. In this paper, attempts have been made to predict the yield of the apple crop using morphological traits. PCA was used for selection of the significant variables. These variables were later used as input variables in the ANN model with different hidden layers for predicting crop yield. The predictive performance of the model was evaluated using standard statistical tests. Sensitivity analysis was performed to find out the individual effects of each character on the apple yield. The study contributes to a better understanding of the complex relationships between crop yield and morphological traits. Full article
(This article belongs to the Special Issue Advanced Studies in Cultivation and Breeding of Apple)
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14 pages, 1326 KiB  
Article
Effects of Dwarfing Interstock Length on the Growth and Fruit of Apple Tree
by Shasha Zhou, Zhen Shen, Baoying Yin, Bowen Liang, Zhongyong Li, Xueying Zhang and Jizhong Xu
Horticulturae 2023, 9(1), 40; https://doi.org/10.3390/horticulturae9010040 - 31 Dec 2022
Cited by 2 | Viewed by 1676
Abstract
There is no report on the effect of the length of Jizhen 2 interstock on the growth and fruit quality of Tianhong 2 apple trees, which are usually grown in Baoding, Hebei Province, China. We surveyed the tree size, branch types, fruit set, [...] Read more.
There is no report on the effect of the length of Jizhen 2 interstock on the growth and fruit quality of Tianhong 2 apple trees, which are usually grown in Baoding, Hebei Province, China. We surveyed the tree size, branch types, fruit set, fruit quality and root parameters of 3–5-year-old ‘Tianhong 2/Jizhen 2/Malus × robusta Rehder’ apple trees, to study the effects of dwarfing interstock length on the growth of the tree’s aboveground parts and roots, as well as fruit yield and quality. The tree height and the stem girths of the interstock and scion decreased as interstock length increased, and the dwarfing degree of the apple trees gradually increased. Trees with an interstock length of 30 cm had the fewest long branches, the most short branches, and the greatest proportion of short branches. An interstock length of 30 cm provided the highest fruit-set rate, the highest yield per tree and per unit cross-sectional area, the highest single fruit weight, the highest soluble: acid ratio, the highest color brightness (L*), and better red skin coloration (higher a*) of the fruit skin. The root length density, root surface area density, and root volume density exhibited two growth peaks in a year, during the slow growth period when spring and autumn shoots are stopped. Root length density, root surface area density, and root volume density decreased with interstock length. Root death peaked during the growth peak period of the autumn shoots, and root length density of dead roots and root turnover frequencyincreased with the interstock length. A 30 cm length was the most suitable for the Tianhong 2 apple trees when the Jizhen 2 was used as the interstock. Full article
(This article belongs to the Special Issue Advanced Studies in Cultivation and Breeding of Apple)
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