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Agronomy
Special Issues
Crop Tolerance under Biotic and Abiotic Stresses—Volume II
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Crop Tolerance under Biotic and Abiotic Stresses—Volume II

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Crop Breeding and Genetics".

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 4344

Special Issue Editor

Dr. Krisztina Bela

E-Mail Website
Guest Editor
Department of Plant Biology, University of Szeged, Szeged, Hungary
Interests: plants; glutathione peroxidase; reactive oxygen species
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Crops are subject to various environmental influences during their growth. How can we breed better crops?

For this Special Issue, we welcome papers related to the following topics:

  • Crop gene;
  • Crop tolerance;
  • Abiotic stresses;
  • Biotic stresses;
  • Heat stress;
  • Water stress;
  • Salt stress;
  • Light stress.

Dr. Krisztina Bela
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. Agronomy 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 2600 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
  • temperature stress
  • salinity stress
  • climate resilient crops
  • stress tolerance
  • stress responses
  • crop physiology
  • crop quality

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Published Papers (3 papers)

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Research

8 pages, 1189 KiB  
Communication
Reaction of Tomato Lineages and Hybrids to Xanthomonas euvesicatoria pv. perforans
by Ana Carolina Pires Jacinto, Ana Luisa Alves Ribeiro, Gabriel Mascarenhas Maciel and Nilvanira Donizete Tebaldi
Agronomy 2024, 14(6), 1211; https://doi.org/10.3390/agronomy14061211 - 4 Jun 2024
Viewed by 537
Abstract
The use of resistant varieties is an important strategy for managing tomato bacterial spot. The objective of this study was to evaluate the reaction of tomato genotypes to Xanthomonas euvesicatoria pv. perforans. The experiment was conducted in a randomized block design with [...] Read more.
The use of resistant varieties is an important strategy for managing tomato bacterial spot. The objective of this study was to evaluate the reaction of tomato genotypes to Xanthomonas euvesicatoria pv. perforans. The experiment was conducted in a randomized block design with 10 genotypes and four repetitions. The genotypes consisted of hybrids (UFU-1, UFU-2, UFU-3), wild resistant accession Solanum pennellii, commercial susceptible cultivar Santa Clara and homozygous lines (UFU-5, UFU-6, UFU-11, UFU-12, UFU-15). The UFU B8 isolate of X. euvesicatoria pv. perforans was used. The bacterial suspension was prepared and adjusted in a spectrophotometer OD550 = 0.5 (1 × 109 CFU mL−1). Inoculation occurred 10 days after transplantation. Disease severity was assessed at 3, 6, 9, 12 and 15 days after inoculation, and the area under the disease progress curve (AUDPC) was calculated. There was a significant difference between the genotypes regarding the severity of the disease at 3, 6 and 12 days after inoculation. Lineages 5, 6 and 12, the hybrid UFU-1 and the wild accession S. pennellii showed the lowest severity of the disease, being promising for promoting genetic improvement programs aimed at resistance to the bacteria. Full article
(This article belongs to the Special Issue Crop Tolerance under Biotic and Abiotic Stresses—Volume II)
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18 pages, 2696 KiB  
Article
Estimation of Genetic Parameters and Identification of Leaf Blast-Resistant Rice RILs Using Cluster Analysis and MGIDI
by Reza Jalalifar, Atefeh Sabouri, Sedigheh Mousanejad and Ahmad Reza Dadras
Agronomy 2023, 13(11), 2730; https://doi.org/10.3390/agronomy13112730 - 29 Oct 2023
Cited by 3 | Viewed by 1666
Abstract
Rice blast disease, caused by the fungus Magnaporthe oryzae, poses a significant threat to rice cultivation. One effective way to deal with this disease is to identify and introduce resistant varieties using different breeding methods. This study utilized a population of 153 [...] Read more.
Rice blast disease, caused by the fungus Magnaporthe oryzae, poses a significant threat to rice cultivation. One effective way to deal with this disease is to identify and introduce resistant varieties using different breeding methods. This study utilized a population of 153 recombinant inbred lines (RILs) derived from the crossing of the Shahpasand (SH) and IR28 varieties, characterized by susceptibility and resistance to leaf blast, respectively. In combination with 12 control varieties, these genotypes were subjected to an extensive evaluation of disease severity (5 stages), the area under the disease progress curve (AUDPC), type, and the infection rate in 2021 and 2022. Analysis of variance revealed significant genetic variation, highlighting the potential of the RIL population for identifying and selecting resistant lines. Employing cluster analysis and the multi-trait genotype-ideotype distance index (MGIDI), 17 lines were identified as the most resistant over a two-year evaluation period. The average AUDPC for these resistant lines was estimated at 2.435 ± 0.114, and lines 17 and 111 had the lowest AUDPC (1.526 and 1.630, respectively) and showed the least infection in two years. Conversely, lines 42 and 43 showed the highest AUDPC values (255.312 and 248.209) along with heightened sensitivity. The use of MGIDI yielded a substantial selection differential (SD) of −59.12% for traits related to leaf blast disease resistance, demonstrating the effectiveness of this method. Furthermore, new recombinant populations are expected to be developed in future plant breeding projects by crossing the most susceptible and resistant lines, which will be new sources of resistance to this disease. Full article
(This article belongs to the Special Issue Crop Tolerance under Biotic and Abiotic Stresses—Volume II)
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22 pages, 3026 KiB  
Article
Biochemical, Anatomical, Genetic, and Yield Assessment of Seven Rice Genotypes (Oryza sativa L.) Subjected to Drought Stress
by Mahmoud I. Abo-Youssef, Mohssen Elbagory, Abdelsalam B. Elsehely, Amgad A. El-Gammaal, Medhat E. El Denary, Mohamed S. Abd Elaty, Ibrahim A. Talha, Mohamed Hazman, Yasser Nehela, Alaa El-Dein Omara and Wael H. El-Kallawy
Agronomy 2023, 13(10), 2542; https://doi.org/10.3390/agronomy13102542 - 2 Oct 2023
Viewed by 1618
Abstract
Drought stress is one of the main environmental challenges that dramatically reduce global rice production within several agricultural ecosystems. Breeding drought-tolerant rice genotypes is an important sustainable strategy to overcome this constraint. In this work, drought tolerance levels were assessed according to biochemical, [...] Read more.
Drought stress is one of the main environmental challenges that dramatically reduce global rice production within several agricultural ecosystems. Breeding drought-tolerant rice genotypes is an important sustainable strategy to overcome this constraint. In this work, drought tolerance levels were assessed according to biochemical, anatomical, and molecular aspects, which led to selecting three promising crosses (Sakha 107 × Sakha super 300, Sakha 107 × M206, and Sakha 107 × Sakha 108) that were compared with their parents as controls. The antioxidant capabilities of the chosen potential crosses, such as the ascorbate peroxidase activity (APX), superoxide dismutase activity (SOD), catalase activity (CAT), and total phenolics, were significantly higher compared with their parents under drought stress. Moreover, the promising selected crosses could accumulate greater proline and chlorophyll contents. The potential superiority of the three selected rice crosses was anatomically represented throughout cross-sections of roots, stems, and leaves, which recorded higher values of cross-section diameter, epidermal thickness, cortex thickness, mesophyll thickness, and bundle sheath thickness as well as a broader range of xylem vessel diameters than their parents under a water deficit. The observed superiority of the antioxidant activities in the overall drought-tolerance mechanisms and anatomical characteristics reflected their protective role in the adaptation process under water stress. Molecular analyses using inter-simple sequence repeat (ISSR) markers suggested two promising crosses (Sakha 107 × Sakha super 300 and Sakha 107 × M206) to be the most suitable crosses for saving water. They had the highest similarity values and were grouped in a distinct cluster. The relative gene expression of OsACS2, OsCML31, OsCYP94C2a, and OsSRO1c was significantly elevated in the two selected drought-tolerant rice genotypes (Sakha 107 × Sakha super 300 and Sakha 107 × M206). Full article
(This article belongs to the Special Issue Crop Tolerance under Biotic and Abiotic Stresses—Volume II)
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