Publication Date
1989
Description
Rhizomatous growth is desirable in pastures, yet many species used for grazing have exceedingly short rhizomes. In damaged pastures, vigorous rhizomes can provide for recovery of areas in which the stand has been lost. In breeding pasture grasses, selecting for high yields in a favorable environment may result in altered partitioning of carbohydrate between shoots and roots to favor above ground growth. In the Panicum genus, this can occur even in spaced plantings in which plants may exceed 2 m in height. The following experiment utilized a high rhizome (HR), an intermediate rhizome (IR), and a low rhizome (LR) accession of Panicum amarum L. to determinate if the observed relationship between increased rhizomatous growth and decreased above ground growth in the Panicum genus was associated with a change in net photosynthesis or increased export of photosynthate from individual grass leaves.
Citation
Fisher, D S.; Burns, J C.; Timothy, D H.; and Pond, K R., "Relationship of Leaf Export of Carbohydrate to Rhizomatous Growth in Panicum Amarum L." (2025). IGC Proceedings (1989-2023). 76.
https://uknowledge.uky.edu/igc/1989/session1/76
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Relationship of Leaf Export of Carbohydrate to Rhizomatous Growth in Panicum Amarum L.
Rhizomatous growth is desirable in pastures, yet many species used for grazing have exceedingly short rhizomes. In damaged pastures, vigorous rhizomes can provide for recovery of areas in which the stand has been lost. In breeding pasture grasses, selecting for high yields in a favorable environment may result in altered partitioning of carbohydrate between shoots and roots to favor above ground growth. In the Panicum genus, this can occur even in spaced plantings in which plants may exceed 2 m in height. The following experiment utilized a high rhizome (HR), an intermediate rhizome (IR), and a low rhizome (LR) accession of Panicum amarum L. to determinate if the observed relationship between increased rhizomatous growth and decreased above ground growth in the Panicum genus was associated with a change in net photosynthesis or increased export of photosynthate from individual grass leaves.
