Influence of Root System Characteristics on Black Spruce Seedling Responses to Limiting Conditions.

ABSTRACT: Roots directly affect planted seedling adaptation to new growing conditions at reforestation sites. To test the influence of root characteristics on the short-term response of seedlings to limiting resources (water, nutrient, or oxygen), we conducted two experiments. We compared (1) the growth and physiology of three types of four-year-old black spruce (Picea mariana (Mill.) BSP) seedlings (Containerized, highly developed initial roots restricted to a plug; bareroot, less developed but unrestricted initial roots; deeply-planted containerized, restricted initial and adventitious roots) to different combinations of irrigation and fertilization. We also investigated (2) the cellular plasticity of adventitious and initial roots to three irrigation regimes including flooding. Bareroot seedlings

SUBMITTER: Pernot C 

PROVIDER: S-EPMC6473862 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature