Variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms.

ABSTRACT: Several breeding initiatives have sought to improve flag leaf performance as its health and physiology are closely correlated to rice yield. Previous studies have described natural variation of photosynthesis for flag leaves; however, none has examined their performance under the non-steady-state conditions that prevail in crop fields. Photosynthetic induction is the transient response of photosynthesis to a change from low to high light. Rice flag leaf photosynthesis was measured in both steady- and non-steady-state conditions to characterize natural variation. Between the lowest and highest performing accession, there was a 152% difference for average CO2 assimilation during induction (Ā300), a 77% difference for average intrinsic water use efficiency during induction (iWUEavg), and a 18

SUBMITTER: Acevedo-Siaca LG 

PROVIDER: S-EPMC7904153 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature