Genotypic variation in the response of soybean to elevated CO₂.

ABSTRACT: The impact of elevated CO₂ (eCO₂) on soybean productivity is essential to the global food supply because it is the world's leading source of vegetable proteins. This study aimed to understand the yield responses and nutritional impact under free-air CO₂ enrichment (FACE) conditions of soybean genotypes. Here we report that grain yield increased by 46.9% and no reduction in harvest index was observed among soybean genotypes. Elevated CO₂ improved the photosynthetic carbon assimilation rate, leaf area, plant height, and aboveground biomass at vegetative and pod filling stages. Besides the positive effects on yield parameters, eCO₂ differentially affected the overall grain quality. The levels of calcium (Ca), phosphorous (P), potassium (K

SUBMITTER: Soares JC 

PROVIDER: S-EPMC10168044 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature