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Genetic Structure of Maize Resistance to Stress
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Genetic Structure of Maize Resistance to Stress

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Crop Physiology and Crop Production".

Deadline for manuscript submissions: closed (10 July 2023) | Viewed by 4229

Special Issue Editors

Dr. Rohit Kumar

E-Mail Website
Guest Editor
Clemson University | CU Department of Genetics and Biochemistry College of Science, Clemson, Clemson, SC 29634, USA
Interests: plant genetics; molecular biology and bioinformatics
Prof. Dr. Piotr Szulc

E-Mail Website
Guest Editor
Department of Agronomy, Poznań University of Life Sciences, Dojazd 11, 60-632 Poznan, Poland
Interests: maize; fertilization; tillage; soil protection; eutrophication; silage; green forage; technological quality of the yield
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The global environmental perturbations and increasing population pose a huge challenge for the sustainable supply of healthy and nutritious food. Developing cereals with superior traits which can be sustained under drought, water lodging, high salinity, and pathogen infestations and have a high yield is an important requisite to meet this challenge. In the current scenario, the rising temperature makes it critical to have a continuous water supply and harbors a serious risk with drought-like conditions, which ultimately hampers yield and production. To cope with this global challenge, we have chosen Maize (Zea mays) as a focus crop for this Special Issue due to its worldwide presence. Throughout their life cycle, drought stress affects maize plants at multiple time points, including seed germination, seedling growth, overall growth of plants, pollen and silk development, pollination, kernel development, and ultimately during senescence. Different maize genotypes have varying abilities to withstand drought stress up to certain limits. In that context, various studies in maize and other cereals have expanded our knowledge of abiotic stress tolerance; however, key molecular and physiological mechanisms underlying drought stress tolerance are less understood.

As the topic editors of “Genetic Structure of Maize Resistance to Stresses”, we are inviting research and review papers from researchers working with major cereal crops who can help to enhance our understanding of plant adaptation under drought stress and support climate-resilient crops. This Special Issue is mainly focused on maize and other cereal crops such as sorghum and wheat. Submissions are welcome on the broader aspects of drought stress and tolerance, including physiological, biochemical, metabolic, proteomic, and transcriptomic approaches to evaluate and address drought stress tolerance in cereals. Authors are encouraged to contact the editor with a 200-word summary if they have any questions regarding the suitability of their submission.

Dr. Rohit Kumar
Prof. Dr. Piotr Szulc
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. Plants is an international peer-reviewed open access semimonthly 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 2700 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

  • drought stress
  • cereals
  • maize
  • stress tolerance
  • physiological
  • biochemical
  • metabolic approaches

Published Papers (2 papers)

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Research

15 pages, 3635 KiB  
Article
Evaluation of Inbred Maize (Zea mays L.) for Tolerance to Low Phosphorus at the Seedling Stage
by Md. Shalim Uddin, Farzana Akter, Md. Golam Azam, Shamim Ara Bagum, Neelima Hossain, Masum Billah, Priya Lal Biswas, Abu Sayeed Md. Hasibuzzaman, Abul Bashar Mohammad Khaldun, Amnah Mohammed Alsuhaibani, Ahmed Gaber and Akbar Hossain
Plants 2023, 12(13), 2520; https://doi.org/10.3390/plants12132520 - 30 Jun 2023
Cited by 1 | Viewed by 1522
Abstract
In underdeveloped nations where low-input agriculture is practiced, low phosphorus (LP) in the soil reduces the production of maize. In the present study, a total of 550 inbred maize lines were assessed for seedling traits under LP (2.5 × 10−6 mol L [...] Read more.
In underdeveloped nations where low-input agriculture is practiced, low phosphorus (LP) in the soil reduces the production of maize. In the present study, a total of 550 inbred maize lines were assessed for seedling traits under LP (2.5 × 10−6 mol L−1 of KH2PO4) and NP (2.5 × 10−4 mol L−1 of KH2PO4) hydroponic conditions. The purpose of this study was to quantify the amount of variation present in the measured traits, estimate the genetic involvement of these characteristics, examine the phenotypic correlation coefficients between traits, and to integrate this information to prepare a multi-trait selection index for LP tolerance in maize. A great deal of variability in the maize genotype panel was confirmed by descriptive statistics and analysis of variance (ANOVA). Estimated broad-sense heritability (h2) ranged from 0.7 to 0.91, indicating intermediate to high heritability values for the measured traits. A substantial connection between MSL and other root traits suggested that the direct selection of MSL (maximum shoot length) could be beneficial for the enhancement of other traits. The principal component analysis (PCA) of the first two main component axes explained approximately 81.27% of the variation between lines for the eight maize seedling variables. TDM (total dry matter), SDW (shoot dry weight), RDW (root dry weight), SFW (shoot fresh weight), RFW (root fresh weight), MRL (maximum root length), and MSL measurements accounted for the majority of the first principal component (59.35%). The multi-trait indices were calculated based on PCA using all the measured traits, and 30 genotypes were selected. These selected lines might be considered as the potential source for the improvement of LP tolerance in maize. Full article
(This article belongs to the Special Issue Genetic Structure of Maize Resistance to Stress)
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14 pages, 1668 KiB  
Article
Response of Maize Varieties (Zea mays L.) to the Application of Classic and Stabilized Nitrogen Fertilizers—Nitrogen as a Predictor of Generative Yield
by Piotr Szulc, Daniel Krauklis, Katarzyna Ambroży-Deręgowska, Barbara Wróbel, Gniewko Niedbała, Mohsen Niazian and Marek Selwet
Plants 2023, 12(3), 600; https://doi.org/10.3390/plants12030600 - 29 Jan 2023
Cited by 6 | Viewed by 2233
Abstract
The study presents the results of a 3-year field trial aimed at assessing the yield and efficiency indicators of nitrogen application in the cultivation of three maize cultivars differing in agronomic and genetic profile. The advantages of the UltraGrain stabilo formulation (NBPT and [...] Read more.
The study presents the results of a 3-year field trial aimed at assessing the yield and efficiency indicators of nitrogen application in the cultivation of three maize cultivars differing in agronomic and genetic profile. The advantages of the UltraGrain stabilo formulation (NBPT and NPPT) over ammonium nitrate and urea are apparent if a maize cultivar capable of efficient nutrient uptake in the pre-flowering period and effective utilization during the grain filling stage is selected. Therefore, the rational fertilization of maize with urea-based nitrogen fertilizer with a urease inhibitor requires the simultaneous selection of cultivars that are physiologically profiled for efficient nitrogen utilization from this form of fertilizer (“stay-green” cultivar). The interaction of a selective cultivar with a high genetically targeted potential for nitrogen uptake from soil, combined with a targeted selection of nitrogen fertilizer, is important not only in terms of production, but also environmental and economic purposes. Full article
(This article belongs to the Special Issue Genetic Structure of Maize Resistance to Stress)
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