Advancing rice breeding for drought tolerance: a comprehensive study of traditional and mutant lines through agronomic performance and drought tolerance indices.

ABSTRACT:

Background

Drought stress is a critical challenge to rice production, necessitating the development of drought-tolerant genotypes. This study aimed to evaluate the drought tolerance of rice genotypes, including traditional parental lines (Hashemi, Khazar, Fajr, and Tarom Mahalli) and their corresponding mutant lines, under normal and drought stress conditions.

Methods

Agronomic traits such as plant height, spike number, spike length, seed fertility, and yield were analyzed under both conditions. The performance of these genotypes was further assessed using drought tolerance indices. Statistical methods including cluster analysis and principal component analysis (PCA) were applied to identify the most resilient genotypes.

Results

Mutant lines demonstrated superior drou

SUBMITTER: Hallajian MT 

PROVIDER: S-EPMC11572063 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature