Identification of quantitative trait loci for related traits of stalk lodging resistance using genome-wide association studies in maize (Zea mays L.)

• DOI: 10.1186/s12863-022-01091-5
• Publication Date: 2022-11-01T10:02:43Z
• Authors: Lifen Wu; Yunxiao Zheng; Fuchao Jiao; Ming Wang; Jing Zhang; Zhongqin Zhang; Yaqun Huang; Xiaoyan Jia; Liying Zhu; Yongfeng Zhao; Jinjie Guo; Jingtang Chen
• Keywords: Stalk; Association mapping; Inbred strain; Trait

Abstract Background Stalk lodging is one of the main factors affecting maize ( Zea mays L.) yield and limiting mechanized harvesting. Developing varieties with high stalk resistance requires exploring genetic basis resistance-associated agronomic traits. strength an important indicator to evaluate can be evaluated by measuring rind penetrometer (RPR) buckling (SBS). Along morphological traits for third internodes length (TIL), fourth internode (FIL), diameter (TID), (FID) are associated resistance. Results In this study, a natural population containing 248 diverse inbred lines genotyped 83,057 single nucleotide polymorphism (SNP) markers was used genome-wide association study (GWAS) six resistance-related The heritability all ranged from 0.59 0.72 in mapping panel. A total 85 significant SNPs were identified panel using best linear unbiased prediction (BLUP) values Additionally, five candidate genes traits, which either directly or indirectly cell wall components. Conclusions These findings contribute our understanding provide valuable theoretical guidance breeding future.