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Soybean genetics and cultivation
Research Guide
What is Soybean genetics and cultivation?
Soybean genetics and cultivation is the study of genetic diversity, genome sequencing, QTL mapping, domestication, agronomic traits, seed composition, photoperiod sensitivity, and drought tolerance in Glycine max to improve its production.
This field encompasses 82,429 published works on soybean genetics and cultivation. Research covers genetic markers, developmental stages, and environmental variability in soybeans. Key topics include genome sequencing and QTL mapping for trait improvement.
Topic Hierarchy
Research Sub-Topics
Soybean QTL Mapping
This sub-topic covers quantitative trait loci (QTL) identification and mapping for agronomic traits like yield, maturity, and disease resistance in soybean. Researchers study genetic markers, linkage mapping, and GWAS to pinpoint QTLs influencing key phenotypes.
Soybean Genetic Diversity
This sub-topic examines genetic variation across soybean germplasm using markers like SSRs, SNPs, and whole-genome sequencing. Researchers analyze population structure, domestication bottlenecks, and wild relatives for broadening the genetic base.
Soybean Genome Sequencing
This sub-topic focuses on whole-genome assembly, resequencing of cultivars, and pan-genome construction for Glycine max. Researchers investigate polyploidy, gene duplication, and structural variants from palaeopolyploid origins.
Soybean Photoperiod Sensitivity
This sub-topic explores maturity loci (E1-E9), flowering time regulation, and photoperiod responses in soybean adaptation. Researchers clone genes and dissect signaling pathways for latitude-specific cultivar development.
Soybean Drought Tolerance
This sub-topic investigates physiological, genetic, and molecular mechanisms of drought stress response in soybean. Researchers identify tolerance QTLs, root architecture traits, and transcription factors for resilient varieties.
Why It Matters
Soybean genetics and cultivation enable breeding for enhanced agronomic traits and stress tolerance, supporting global food security. "Genome sequence of the palaeopolyploid soybean" by Schmutz et al. (2010) provided the first complete soybean genome, facilitating marker-assisted selection for yield and composition traits cited 4469 times. Fehr and Caviness (1977) standardized developmental stages in "Stages of soybean development," aiding precise cultivation management across environments. Johnson et al. (1955) quantified genetic and environmental variability in "Estimates of Genetic and Environmental Variability in Soybeans," with 2445 citations, informing breeding strategies for stable performance.
Reading Guide
Where to Start
"Stage of Development Descriptions for Soybeans, Glycine Max (L.) Merrill" by Fehr et al. (1971) first, as it provides foundational, environment-independent descriptions of soybean growth stages essential for understanding cultivation basics before genetics.
Key Papers Explained
"Genome sequence of the palaeopolyploid soybean" by Schmutz et al. (2010) established the reference genome (4469 citations), enabling marker comparisons in Powell et al. (1996) "The comparison of RFLP, RAPD, AFLP and SSR (microsatellite) markers for germplasm analysis" (2615 citations). Fehr and Caviness (1977) "Stages of soybean development" (2499 citations) links to Johnson et al. (1955) "Estimates of Genetic and Environmental Variability in Soybeans" (2445 citations) by quantifying trait variation across stages. Doebley et al. (2006) "The Molecular Genetics of Crop Domestication" (1966 citations) contextualizes soybean-specific domestication atop these.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Current work builds on Schmutz et al. (2010) genome for fine-mapping maturity loci and photoperiod sensitivity. No recent preprints available, so frontiers emphasize QTL validation from genetic diversity studies. News coverage absent, directing focus to agronomic trait integration from top-cited foundational papers.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Genome sequence of the palaeopolyploid soybean | 2010 | Nature | 4.5K | ✓ |
| 2 | Stage of Development Descriptions for Soybeans, <i>Glycine Max... | 1971 | Crop Science | 2.9K | ✕ |
| 3 | The comparison of RFLP, RAPD, AFLP and SSR (microsatellite) ma... | 1996 | Molecular Breeding | 2.6K | ✕ |
| 4 | Stages of soybean development | 1977 | Iowa State University ... | 2.5K | ✓ |
| 5 | Estimates of Genetic and Environmental Variability in Soybeans... | 1955 | Agronomy Journal | 2.4K | ✕ |
| 6 | CRYSTALLINE SOYBEAN TRYPSIN INHIBITOR | 1947 | The Journal of General... | 2.4K | ✓ |
| 7 | Journal of the science of food and agriculture | 1962 | Journal of the Science... | 2.4K | ✕ |
| 8 | The Acetylene-Ethylene Assay for N<sub>2</sub> Fixation: Labor... | 1968 | PLANT PHYSIOLOGY | 2.2K | ✓ |
| 9 | The Molecular Genetics of Crop Domestication | 2006 | Cell | 2.0K | ✓ |
| 10 | A classification system for seed dormancy | 2004 | Seed Science Research | 1.9K | ✓ |
Frequently Asked Questions
What is the first genome sequence of soybean?
"Genome sequence of the palaeopolyploid soybean" by Schmutz et al. (2010) delivered the initial high-quality assembly of the soybean genome. This palaeopolyploid sequence covers Glycine max's 1.1 Gb genome with 46,430 gene models. It supports QTL mapping for agronomic traits and domestication studies.
How are soybean developmental stages described?
Fehr et al. (1971) defined stages in "Stage of Development Descriptions for Soybeans, Glycine Max (L.) Merrill," applicable to all genotypes and environments. These separate vegetative (V) and reproductive (R) stages for single plants or communities. Fehr and Caviness (1977) expanded this in "Stages of soybean development" to guide cultivation timing.
What genetic markers are used in soybean germplasm analysis?
Powell et al. (1996) compared RFLP, RAPD, AFLP, and SSR markers in "The comparison of RFLP, RAPD, AFLP and SSR (microsatellite) markers for germplasm analysis," finding SSRs most effective for genetic diversity. These tools assess soybean genetic variation for breeding. The study, with 2615 citations, underpins modern QTL mapping.
How is genetic variability estimated in soybeans?
Johnson et al. (1955) estimated heritability and variability in "Estimates of Genetic and Environmental Variability in Soybeans" across traits like yield. Genetic variance exceeded environmental for most traits, guiding selection. This foundational work has 2445 citations.
What role does soybean play in crop domestication genetics?
Doebley et al. (2006) reviewed molecular changes in "The Molecular Genetics of Crop Domestication," including soybean traits like seed non-dormancy. Key loci control shattering and flowering. This applies to soybean improvement with 1966 citations.
What is known about soybean seed dormancy?
Baskin and Baskin (2004) proposed a classification in "A classification system for seed dormancy," categorizing physiological, physical, and combinational types. Soybean exhibits physiological dormancy relevant to cultivation. The system standardizes research with 1935 citations.
Open Research Questions
- ? How do palaeopolyploidy events in soybean influence QTL mapping for drought tolerance?
- ? What genetic mechanisms control photoperiod sensitivity and maturity loci in diverse soybean environments?
- ? How can genetic diversity from wild relatives enhance seed composition traits under agronomic stress?
- ? What are the precise interactions between domestication loci and environmental variability in soybean yield?
Recent Trends
The field holds steady at 82,429 works with no 5-year growth data reported.
No recent preprints or news in the last 12 months indicate stable research on established topics like QTL mapping and genome applications from Schmutz et al.
2010Citations remain high for classics, such as Fehr et al. at 2888.
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