Whole plant chamber to examine sensitivity of cereal gas exchange to changes in evaporative demand.

ABSTRACT:

Background

Improving plant water use efficiency (WUE) is a major target for improving crop yield resilience to adverse climate change. Identifying genetic variation in WUE usually relies on instantaneous measurements of photosynthesis (An) and transpiration (Tr), or integrative measurements of carbon isotope discrimination, at the leaf level. However, leaf gas exchange measurements alone do not adequately represent whole plant responses, especially if evaporative demand around the plant changes.

Results

Here we describe a whole plant gas exchange system that can rapidly alter evaporative demand when measuring An, Tr and intrinsic WUE (iWUE) and identify genetic variation in this response. An was not limited by VPD under steady-state conditions but some wheat cultivars restri

SUBMITTER: Jauregui I 

PROVIDER: S-EPMC6211548 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature