Photosynthesis and rhizome carbohydrate concentrations of switchgrass grown from reserve-depleted rhizomes

Dataset · Thu Sep 07 04:00:00 EDT 2023

DOI:https://doi.org/10.5061/dryad.4b8gthtj1· OSTI ID:3003532

Tejera-Nieves, Mauricio D. ^[1]; Walker, Berkley J. ^[2]

---

1. Jan IngenHousz Institute
2. GLBRC - Michigan State University

A long-standing question in perennial grass breeding and physiology is whether yield improvement strategies could compromise winter survival. Perennial grasses rely on the pool of carbohydrates accumulated in storage organs from the previous growing season for winter maintenance and spring regrowth. Yield improvement strategies could reduce winter survival if they increase biomass and grain yields at the expense of carbon allocation to storage. Therefore, it is crucial to better understand the dependence of regrowth on storage reserves. We experimentally depleted switchgrass (Panicum virgatum L.) rhizome reserves by storing rhizomes for two weeks at 5 °C (control treatment) and 25 °C (reserve-depleted treatment).

• Research Organization: Great Lakes Bioenergy Research Center (GLBRC), Madison, WI (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Biological and Environmental Research (BER)
• DOE Contract Number: SC0018409
• OSTI ID: 3003532
• Country of Publication: United States
• Language: English

Related Subjects

bioenergy
carbon starvation
long-term persistence
perenniality
rhizome respiration
sinklimitation
source-sink plasticity
starch
winter survival