A 30% reduction in switchgrass rhizome reserves did not decrease biomass yield

Autor: Mauricio Tejera‐Nieves, Berkley J. Walker
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: GCB Bioenergy, Vol 15, Iss 11, Pp 1329-1338 (2023)
Druh dokumentu: article
ISSN: 1757-1707
1757-1693
DOI: 10.1111/gcbb.13094
Popis: Abstract A long‐standing question in perennial grass breeding and physiology is whether yield improvement strategies could compromise winter survival. Since perennial grasses rely on stored carbohydrates 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 comprehend the dependence of regrowth on storage reserves. We experimentally depleted switchgrass (Panicum virgatum L.) rhizome reserves by storing rhizomes for 2 weeks at 5°C (control treatment) and 25°C (reserve‐depleted treatment). During the storage period rhizome respiration was 5.3× higher at 25°C (0.010 μmol CO2 g−1 min−1 at 5°C vs. 0.054 μmol CO2 g−1 min−1 at 25°C; p
Databáze: Directory of Open Access Journals
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