Medicago Phosphorus Deficiency Phenotypes and Root Architecture for 200 Accessions

200 genetically diverse Medicago sativa accessions were phenotyped for biomass and phosphorus efficiency under high and low phosphorus conditions in a greenhouse. A subset of 20 accessions underwent detailed root system architecture analysis using a rhizotron system, revealing a 38% increase in phosphorus use efficiency under low P. The dataset, authored by Nagarjun Devabhakthini and last updated in April 2026, supports genome-wide association studies that identified candidate genes for stress response.

Use Cases

• Identify genetic markers for phosphorus use efficiency based on genome-wide association study results.
• Model root system architecture plasticity and soil exploration strategies under nutrient stress.
• Screen alfalfa accessions for stable biomass production under low phosphorus conditions for breeding programs.
• Study the relationship between shoot phosphorus content, root-to-shoot ratio, and overall plant fitness.

Strengths

• Phenotypic data for 200 accessions provides a broad genetic basis for analysis.
• Detailed root architecture metrics for a 20-accession subset from a controlled rhizotron system.
• Includes specific quantitative results, such as a 23% decrease in root dry matter under low phosphorus.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The primary data file is a 3.0 MB PDF, which may require extraction to a structured format for analysis.

Provenance

Source

figshare

Collection Method

Greenhouse experiment and rhizotron analysis of Medicago sativa accessions under controlled phosphorus conditions.

Freshness

Last updated 2026-04-23 05:35:06; freshness should be verified.