Optimizing Planting Density to Improve Source-Sink Relationship and Yield of Hybrid Wheat Under Late-Sowing Conditions.

ABSTRACT: Increasing planting density is an effective measure to mitigate the negative impacts of late-sowing on yield formation in winter wheat. However, the physiological mechanisms underlying source-sink coordination and high-yield performance through density regulation in hybrid wheat with high yield potential remain unclear. A two-year field experiment was conducted using the hybrid variety Jingmai 17 and conventional variety Jimai 22 as experimental materials, with three planting densities: 150 plants·m^-2 (M1), 300 plants·m^-2 (M2), and 450 plants·m^-2 (M3). The effects of planting density on the source-sink relationship and yield were systematically investigated. The results showed that both Jingmai 17 (2.4-9.7%) and Jimai 22 (1.4-10.6%) exhibited the most signi

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC12844727 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature