Lateral root elongation enhances nitrogen-use efficiency in maize genotypes at the seedling stage.

ABSTRACT:

Background

Maize plants show great variation in root morphological response to nitrogen (N) deficit, and such alterations often determine N-use efficiency (NUE) plants. This study assessed genotypic variation in root morphology and NUE in selected 20 maize genotypes with contrasting root system size grown in a semi-hydroponic phenotyping system for 38 days under control (4 mmol L^-1 NO₃ ^- ) and low N (LN) (40 μmol L^-1 ) for 38 days after transplanting.

Results

Maize genotypes exhibited different responses to LN stress in each of the 28 measured shoot and root traits. The 20 genotypes were assigned into one of the three groups: N-efficient (eight genotypes), medium (four genotypes), and N-inefficient (eight genotypes), based on shoot

SUBMITTER: Wang H 

PROVIDER: S-EPMC9545651 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature