Maize grain yield enhancement in modern hybrids associated with greater stalk lodging resistance at a high planting density: a case study in northeast China.

ABSTRACT: Lodging resistance is a critical trait in modern maize breeding. This study aimed to examine maize stalk lodging and its related characteristics in response to increasing planting densities in modern hybrids. A two-year field trial was conducted from 2018 to 2019 with two widely grown commercial hybrids ('Xy335' and 'Fm985') and three planting density treatments of 4.5 × 10⁴ (low density, LD), 6.5 × 10⁴ (medium density, MD), and 8.5 × 10⁴ plants/ha (high density, HD). New hybrid Fm985 had a significantly higher grain yield and lower lodging rate at HD, while there was no significance at LD and MD. Compared to Fm985, old hybrid Xy335 had a significantly high plant height, ear and gravity height, and culm length (CL) across the three planting densities, while

SUBMITTER: Cui J 

PROVIDER: S-EPMC9420147 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature