The phrase "primary root" refers to the main or first root that develops from a plant embryo. It is responsible for anchoring the plant in the soil and absorbing water and nutrients. Full definition
If we fail to see this, we miss what he took to be the fundamental, primitive, and primary root cause of the difficulties. (religion-online.org)
The confocal microscopy of Setaria grass roots (top and bottom insets) show mutant strains of Azospirillum brasilense and Herbaspirillum serpedicae with heavy colonization around branch roots and the elongation of primary roots. (sciencedaily.com)
Bean plants that suppress secondary root growth in favor of boosting primary root growth forage greater soil volume to acquire phosphorus, according to Penn... (scienceandtechnologyresearchnews.com)