The impact of awn length on seed yield and drought resistance in Elymus sibiricus L. and the molecular mechanism underlying awn length regulation.

ABSTRACT:

Background

Elymus sibiricus L. is a native grass species vital for ecological restoration and livestock production on China's Qinghai-Tibet Plateau, valued for its high yield, superior quality, and strong adaptability. Its awns, a significant morphological structure of the seed, significantly influence seed yield and stress resistance. This study utilized 14 E. sibiricus accessions with distinct awn lengths to investigate the influence of awn length on seed yield and drought resistance. Additionally, it aims to elucidate the molecular mechanisms underlying awn length regulation in E. sibiricus.

Results

Analysis of five agronomic traits related to seed yield revealed a significant positive correlation between awn length and thousand-grain weight. Principal component analysis

SUBMITTER: Song D 

PROVIDER: S-EPMC12831276 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature