Interactive effects of seedling number per hill and plant spacing on source-sink dynamics and yield formation in rice.

ABSTRACT: A high-quality rice population structure serves as the foundation for achieving high yields, with plant spacing and the number of seedlings per hill playing key roles in regulating this structural development. However, the combined effects of seedling number per hill and plant spacing on yield formation and resource allocation in rice (Oryza sativa L.) are not yet fully understood. This study aimed to assess the effects of coordinated changes in seedling number per hill and plant spacing on source-sink characteristics and yield in rice, while maintaining a constant seedling density. The study evaluated the response of four rice varieties to combined variations in seedling number per hill and plant spacing, all under a baseline seedling density of 60 × 10⁴ ha^-¹,

SUBMITTER: Wu X 

PROVIDER: S-EPMC12682863 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature