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Diversity
Special Issues
Genetic Diversity and Plant Breeding
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Genetic Diversity and Plant Breeding

A special issue of Diversity (ISSN 1424-2818).

Deadline for manuscript submissions: 31 December 2024 | Viewed by 1733

Special Issue Editor

Dr. Qiuyue Chen

E-Mail Website
Guest Editor
Department of Plant and Agroecosystem Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA
Interests: crop genetics

Special Issue Information

Dear Colleagues,

Genetic diversity is the cornerstone of successful plant breeding programs, serving as the raw material for the development of new crop varieties with improved traits. By harnessing the rich reservoir of genetic resources available in plant populations, breeders can enhance traits such as yield, stress tolerance, nutritional quality, and adaptability to changing environmental conditions. The Special Issue “Genetic Diversity and Plant Breeding” aims to explore the crucial interplay between genetic diversity and the advancement of plant breeding strategies, with a particular focus on addressing different biotic and abiotic stresses.

This Special Issue aims to bring together insights from genetics, genomics, breeding, agronomy, and biotechnology to provide a comprehensive understanding of the role of genetic diversity in plant improvement. The contributions included within this Special Issue cover a wide range of topics, including the characterization and utilization of genetic resources, the development and application of molecular markers for trait mapping and marker-assisted selection, the utilization of genomic selection for predicting breeding values, and the application of genomic technologies like genome editing and transgenics in breeding programs. Additionally, the Special Issue will explore the role of genetic diversity in addressing various biotic and abiotic stresses, such as pest and disease resistance, drought tolerance, and heat tolerance.

This Special Issue will highlight the importance of preserving and utilizing genetic diversity in breeding programs to ensure the sustainability and resilience of agricultural systems in the face of climate change, population growth, and evolving pest and disease pressures. By addressing different biotic and abiotic stresses, the Special Issue aims to provide valuable insights and strategies for developing resilient crop varieties that can thrive in diverse and challenging environments.

Dr. Qiuyue Chen
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. Diversity 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 2100 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

  • genetic diversity
  • plant breeding
  • biotic and abiotic stresses

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Published Papers (1 paper)

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Research

20 pages, 5428 KiB  
Article
Multivariate Analysis Techniques and Tolerance Indices for Detecting Bread Wheat Genotypes of Drought Tolerance
by Ibrahim Al-Ashkar
Diversity 2024, 16(8), 489; https://doi.org/10.3390/d16080489 - 10 Aug 2024
Viewed by 1455
Abstract
Drought stress is one of the biggest hardships in wheat cultivation because of the strong negative relationship between water deficit and crop yields owing to a lower grain weight, a shorter grain-filling period, a slower grain-filling rate, and reduced grain quality. Genotype–environment interaction [...] Read more.
Drought stress is one of the biggest hardships in wheat cultivation because of the strong negative relationship between water deficit and crop yields owing to a lower grain weight, a shorter grain-filling period, a slower grain-filling rate, and reduced grain quality. Genotype–environment interaction (GEN:ENV) generates hardships in selecting wheat genotypes and ideotypes due to biased genetic estimates. Diverse strategies have been proposed to respond to the urgent need for concurrent improvements in yield performance and stability. This study’s purpose was to appraise genetic variation and GEN:ENV effects on yield and yield components to discover drought-stress-tolerant genotypes and ideotypes. This study evaluated 20 genotypes in three consecutive seasons under non-stressful and drought-stress conditions in a total of six ENVs. The broad-sense heritability ranged from 0.54 to 0.82 based on expected mean squares and ranged from 0.60 to 0.90 based on plot mean, but in the other three ways, it was usually greater than 0.90. The high values of (σgen:env2) revealed the effect that broad-sense heritability has on the expression of traits. G01, G03, G06, G07, G08, G10, G12, G13, G16, G17, and G18 were stable genotypes for grain yield (GY), according to additive main effects and a multiplicative interaction biplot for the six ENVs. Based on scores in the weighted average of absolute scores biplot (WAASB), G02, G04, G05, G08, G10, and G18 were selected as stable and high-performance for GY, and they were all selected as the best genotype groups using the WAASB-GY superiority index. From the results obtained from principal component analysis and hierarchical clustering and from the tolerance discrimination indices, G02, G04, G05, G18, and G19 are genotypes that produce a suitable yield under non-stressful and drought-stress conditions. In essence, combining approaches that take into consideration stability and high performance can contribute significantly to enhancing the reliability of recommendations for novel wheat genotypes. Full article
(This article belongs to the Special Issue Genetic Diversity and Plant Breeding)
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