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ARS Home » Southeast Area » Florence, South Carolina » Coastal Plain Soil, Water and Plant Conservation Research » Research » Publications at this Location » Publication #393195
Research Project: Effective Cotton Genetics and Management Practices for Improved Cotton Quality and Production

Location: Coastal Plain Soil, Water and Plant Conservation Research

Title: Data from: Breeding heat tolerant orchardgrass germplasm for summer persistence in high temperature stress environments of the southeastern United States

Author
item Billman, Eric
item MORRISON, JESSE - Mississippi State University
item BALDWIN, BRIAN - Mississippi State University

Submitted to: Dryad Digital Repository
Publication Type: Database / Dataset
Publication Acceptance Date: 4/23/2022
Publication Date: 4/25/2022
Citation: Billman, E.D., Morrison, J.I., Baldwin, B.S. 2022. Data from: Breeding heat tolerant orchardgrass germplasm for summer persistence in high temperature stress environments of the southeastern United States. Dryad Digital Repository. https://doi.org/10.5061/dryad.8w9ghx3ps.
DOI: https://doi.org/10.5061/dryad.8w9ghx3ps

Interpretive Summary: DATASET ONLY.

Technical Abstract: This is digital research data corresponding to a published manuscript, Breeding heat tolerant orchardgrass germplasm for summer persistence in high temperature stress environments of the southeastern United States, in Crop Science, Volume 61, p. 1915 - 1925. Orchardgrass (Dactylis glomerata L.) could serve as a cool-season perennial in southeastern production systems, but often does not behave as a true perennial under high temperature stress conditions of the region. This work sought to develop heat-tolerant orchardgrass germplasm through recurrent phenotypic selection (RPS) that would both reduce secondary seed dormancy caused by high soil temperatures and improve stand persistence over summer months. Selection was conducted in a growth chamber 40/30 °C (12/12 h, light/darkness), with germinated seedlings subjected to an additional 2–3 weeks of 40/30 °C conditions. The base germplasm (Cycle 0) and selected individuals (Cycles 1–3) were transplanted into the field, then harvested for seed. Forty-degree germination tests compared mean cumulative germination, velocity of germination within 8 days (VOG8), and realized heritability. Stand persistencewas assessed 1 year after transplanting.