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Open research questions in Genetics and Plant Breeding

90 gap statements mined from Genetics and Plant Breeding papers in our 4.5M-paper local library, which holds 656 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • Wheat productivity in Ethiopia remains low, highlighting the need for genetic improvement programs. There is a lack of information on genetic variability, heritability, and correlation analysis in bread wheat genotypes in Ethiopia.

    Genetic variability, heritability and correlation analysis in bread wheat (Triticum aestivum L.) genotypes in North Western Ethiopia · 2026 · DOI

  • There is a need to understand genetic variation in Deenanath grass for crop improvement efforts. The study aims to address this gap by assessing genetic variation using morphological traits and molecular markers.

    Assessment of genetic variation in Deenanath grass (Pennisetum pedicellatum L.) based on morphological trait and molecular markers · 2026 · DOI

  • Alfalfa breeding is time-consuming due to its perennial structure, inbreeding depression, and long selection cycle. There is a need to balance yield and quality parameters in breeding programs.

    Integrating morphological and molecular characterization to reveal genetic diversity and breeding potential in Turkish local alfalfa (Medicago sativa L.) populations · 2026 · DOI

  • Limited understanding of the effectiveness of combining interspecific hybridization and doubled haploid technology for improving rapeseed oil yield and quality.

    PHENOTYPIC, CYTOGENETIC AND MOLECULAR ANALYSIS OF INTERSPECIFIC RAPESEED HYBRIDS · 2026 · DOI

  • Future research should focus on validating the findings of this study under different environmental conditions. The development of new barley varieties with improved yield and drought tolerance is a key area for future research.

    Multi-trait evaluation of barley genotypes under semi-arid conditions using genotype × trait biplot analysis · 2026 · DOI

  • Inconsistent fruit yields, genotype × environment interactions, and the need to identify excellent general combining ability for fruit yield per plant.

    Assessment of parental combining ability, hybrid performance over environment and SSR oriented parental genetic diversity in brinjal (Solanum melongena L.) · 2026 · DOI

  • The study identifies the need to evaluate fruit yield performance in brinjal, with particular emphasis on the contribution of heterosis and genotype × environment interactions.

    Assessment of parental combining ability, hybrid performance over environment and SSR oriented parental genetic diversity in brinjal (Solanum melongena L.) · 2026 · DOI

  • The need for new wheat varieties with improved yield and disease resistance for the El Bajío region. The lack of varieties that can thrive in the region's conditions, including water scarcity and high production costs.

    Fragata F2025: nueva variedad de trigo harinero para El Bajío, Guanajuato · 2026 · DOI

  • There is a need to assess genetic variability and trait associations in indeterminate tomato genotypes. There is a need to identify superior genotypes for improved productivity in tomato cultivation.

    Genetic Variability, Trait Association, and Multi-Trait Selection of New Indeterminate Tomato Genotypes Under Protected Cultivation · 2026 · DOI

  • Khuzestan province lacks improved maize cultivars adapted to its extreme heat and drought. There is a need to identify traits influencing grain yield and improve local maize lines.

    General Combining Ability and Genetic Parameters for Grain Yield and Yield Components in Promising Lines of Maize · 2026 · DOI

  • Further studies are needed to explore the genetic diversity of other maize races. Additional research is needed to confirm the relationships between ISSR markers and phenotypical traits. Future studies can use the results of this study to develop breeding programs for Cabanita maize.

    Integrating genome size variation, ISSR-derived genetic structure, and phenotypical traits from the Southern Peruvian Andean maize (Zea mays L.) race Cabanita · 2026 · DOI

  • The genetic diversity within a single maize race has not been explored yet. There is a lack of information about the relationship between ISSR markers and phenotypical traits in Cabanita maize.

    Integrating genome size variation, ISSR-derived genetic structure, and phenotypical traits from the Southern Peruvian Andean maize (Zea mays L.) race Cabanita · 2026 · DOI

  • Further studies can investigate the genetic variability of durum wheat varieties in other regions of Ethiopia. Research can focus on developing crop improvement programs using the study's findings.

    Genetic Variability and Trait Heritability among Ethiopian Commercial Durum Wheat (Triticum turgidum ssp. durum L.) Varieties in Major Wheat-Producing Areas of Southern Ethiopia · 2026 · DOI

  • The lack of information on genetic variability and trait heritability among Ethiopian commercial durum wheat varieties. The need to assess the genetic variability of durum wheat varieties in major wheat-producing areas of Southern Ethiopia.

    Genetic Variability and Trait Heritability among Ethiopian Commercial Durum Wheat (Triticum turgidum ssp. durum L.) Varieties in Major Wheat-Producing Areas of Southern Ethiopia · 2026 · DOI

  • Sweet corn breeding programs are constrained by the attack of plant pest organisms. There is a need to identify sweet corn hybrids with high productivity and resistance to plant diseases.

    Leaf and Dwarf Disease Incidence and Severity in Sweet Corn Hybrids, Along with Their Implications for Ear Yield · 2026 · DOI

  • Further studies can investigate the mechanisms of resistance to leaf diseases in sweet corn hybrids. Future research can explore the use of molecular markers to identify resistant sweet corn hybrids.

    Leaf and Dwarf Disease Incidence and Severity in Sweet Corn Hybrids, Along with Their Implications for Ear Yield · 2026 · DOI

  • The gap is in the accurate assessment of morphobiological traits for breeding purposes.

    Evaluation of productivity components and their interrelationships in early-maturing inbred maize families · 2026 · DOI

  • Future research can focus on the development of new tamarind varieties with desirable traits. Future research can investigate the genetic basis of trait correlations and genetic diversity in tamarind.

    Genetic diversity analysis of tamarind (Tamarindus indica L.) based on morpho-biochemical traits for identification of superior genotypes · 2026 · DOI

  • The study aims to address this gap by assessing trait correlations and genetic diversity.

    Genetic diversity analysis of tamarind (Tamarindus indica L.) based on morpho-biochemical traits for identification of superior genotypes · 2026 · DOI

  • The study is based on a simulated seed orchard. The sample size is limited to 10 half-sib progenies. The study only considers the genetic variation within the simulated seed orchard.

    Juglans regia L., phenotypic selection and assessment of genetic variation within a simulated seed orchard · 2026 · DOI

  • The study suggests conducting more detailed studies using other molecular marker techniques.

    Evaluation of Diversity of Maize Germplasm of the Republic of Azerbaijan in Terms of Some Yield Parameters · 2026 · DOI

  • 0% of the total variation in the combined ANOVA and that the GEI was found to be significant indicates that selection cannot be limited to average yield (Table 3).

    Yield and Stability in Confectionery Sunflower Genotypes: AMMI–GGE and WAASBY Approach · 2026 · DOI

  • Although SSR-based diversity and population structure analyses are well-established approaches, the integration of genome-wide diversity assessment, residual heterozygosity evaluation, parental-line discrimination, hybrid purity marker development, and breeding-oriented subset optimization within a single elite breeding population has rarely been reported in popcorn germplasm.

    Genetic Diversity, Population Structure and Parental Panel Optimization in Elite Popcorn (Zea mays L.) Inbred Lines Revealed by SSR Markers · 2026 · DOI

  • The study identifies a gap in the understanding of the genetic polymorphism of economically valuable traits in maize germplasm. The study aims to fill this gap by evaluating the diversity of maize germplasm in Azerbaijan.

    Evaluation of Diversity of Maize Germplasm of the Republic of Azerbaijan in Terms of Some Yield Parameters · 2026 · DOI

  • Further evaluation of the hybrids in different environments and breeding programs. Investigation of the molecular mechanisms underlying heterosis and genomic stability.

    PHENOTYPIC, CYTOGENETIC AND MOLECULAR ANALYSIS OF INTERSPECIFIC RAPESEED HYBRIDS · 2026 · DOI

Most-cited papers in Genetics and Plant Breeding

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Open questions raised by papers listed on this page include: (1) There is a lack of information on genetic variability, heritability, and correlation analysis in bread wheat genotypes in Ethiopia (“Genetic variability, heritability and correlation analysis in bread wheat…”, 2026); (2) There is a need to understand genetic variation in Deenanath grass for crop improvement efforts (“Assessment of genetic variation in Deenanath grass (Pennisetum pedicellatum L.)…”, 2026); (3) There is a need to balance yield and quality parameters in breeding programs (“Integrating morphological and molecular characterization to reveal genetic…”, 2026); (4) The lack of varieties that can thrive in the region's conditions, including water scarcity and high production costs (“Fragata F2025: nueva variedad de trigo harinero para El Bajío, Guanajuato”, 2026); (5) There is a need to assess genetic variability and trait associations in indeterminate tomato genotypes (“Genetic Variability, Trait Association, and Multi-Trait Selection of New…”, 2026). 90 gap statements have been mined from Genetics and Plant Breeding papers in our 4.5M-paper local library, which holds 656 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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