Impacts of elevated CO₂ and partial defoliation on mineral element composition in rice.

ABSTRACT:

Introduction

This study explores how elevated CO₂ concentration may alter the source-sink dynamics in rice by providing additional carbon for photosynthesis, thereby affecting nutrient absorption and distribution.

Methods

A free-air CO₂ enrichment experiment was conducted on a japonica cultivar Wuyunjing 27 in 2017 and 2018 growing seasons. The plants were exposed to ambient and elevated CO₂ level (increased by 200 μmol·mol-1) and two source-sink manipulation treatments (control with no leaf cutting and cutting off the top three leaves at heading).

Results

The elevated CO₂ significantly increased the above-ground biomass and the straw non-structural carbohydrate concentration by an average of 19.3% and 12.5%, respectively. S

SUBMITTER: Gao B 

PROVIDER: S-EPMC11608955 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature