Unraveling the genetic architecture for carbon and nitrogen related traits and leaf hydraulic conductance in soybean using genome-wide association analyses.

ABSTRACT:

Background

Drought stress is a major limiting factor of soybean [Glycine max (L.) Merr.] production around the world. Soybean plants can ameliorate this stress with improved water-saving, sustained N₂ fixation during water deficits, and/or limited leaf hydraulic conductance. In this study, carbon isotope composition (δ¹³C), which can relate to variation in water-saving capability, was measured. Additionally, nitrogen isotope composition (δ¹⁵N) and nitrogen concentration that relate to nitrogen fixation were evaluated. Decrease in transpiration rate (DTR) of de-rooted soybean shoots in a silver nitrate (AgNO₃) solution compared to deionized water under high vapor pressure deficit (VPD) conditions was used as a surrogate measurement for lim

SUBMITTER: Steketee CJ 

PROVIDER: S-EPMC6836393 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature