Functional phenomics and genetics of the root economics space in winter wheat using high-throughput phenotyping of respiration and architecture.

ABSTRACT: The root economics space is a useful framework for plant ecology but is rarely considered for crop ecophysiology. In order to understand root trait integration in winter wheat, we combined functional phenomics with trait economic theory, utilizing genetic variation, high-throughput phenotyping, and multivariate analyses. We phenotyped a diversity panel of 276 genotypes for root respiration and architectural traits using a novel high-throughput method for CO₂ flux and the open-source software RhizoVision Explorer to analyze scanned images. We uncovered substantial variation in specific root respiration (SRR) and specific root length (SRL), which were primary indicators of root metabolic and structural costs. Multiple linear regression analysis indicated that lateral root tips had

SUBMITTER: Guo H 

PROVIDER: S-EPMC8518983 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature