Unveiling novel QTLs for nitrogen use efficiency in temperate Japonica rice.

ABSTRACT:

Background

Nitrogen (N) is essential for rice growth and has driven yield increases since the 1950s. However, excessive use of mineral N fertilizers has led to considerable environmental and economic concerns. Enhancing nitrogen use efficiency (NUE) is essential for reducing these impacts and ensuring global food security. Decades of breeding under high N application have reduced the fertilizer responsiveness of modern temperate japonica rice varieties, further contributing to NUE inefficiencies. This study aimed to uncover the genetic components underlaying NUE in temperate-adapted japonica rice varieties.

Results

A genome-wide association study (GWAS) with PCA and kinship matrix was conducted on a panel of 153 temperate japonica rice accessions using 97,244 single-nucleoti

SUBMITTER: Marti-Jerez K 

PROVIDER: S-EPMC12573877 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature