Author:
Wu Lifen,Zheng Yunxiao,Jiao Fuchao,Wang Ming,Zhang Jing,Zhang Zhongqin,Huang Yaqun,Jia Xiaoyan,Zhu Liying,Zhao Yongfeng,Guo Jinjie,Chen Jingtang
Abstract
Abstract
Background
Stalk lodging is one of the main factors affecting maize (Zea mays L.) yield and limiting mechanized harvesting. Developing maize varieties with high stalk lodging resistance requires exploring the genetic basis of lodging resistance-associated agronomic traits. Stalk strength is an important indicator to evaluate maize lodging and can be evaluated by measuring stalk rind penetrometer resistance (RPR) and stalk buckling strength (SBS). Along with morphological traits of the stalk for the third internodes length (TIL), fourth internode length (FIL), third internode diameter (TID), and the fourth internode diameter (FID) traits are associated with stalk lodging resistance.
Results
In this study, a natural population containing 248 diverse maize inbred lines genotyped with 83,057 single nucleotide polymorphism (SNP) markers was used for genome-wide association study (GWAS) for six stalk lodging resistance-related traits. The heritability of all traits ranged from 0.59 to 0.72 in the association mapping panel. A total of 85 significant SNPs were identified for the association mapping panel using best linear unbiased prediction (BLUP) values of all traits. Additionally, five candidate genes were associated with stalk strength traits, which were either directly or indirectly associated with cell wall components.
Conclusions
These findings contribute to our understanding of the genetic basis of maize stalk lodging and provide valuable theoretical guidance for lodging resistance in maize breeding in the future.
Funder
State Key Laboratory of North China Crop Improvement and Regulation
Science and Technology Innovation Team of Maize Modern Seed Industry in Hebei
Maize Industry Technology System Genetic and Breeding Positions in Shandong
Publisher
Springer Science and Business Media LLC
Subject
Health Informatics,Genetics
Reference54 articles.
1. Peiffer JA, Flint-García SA, De Leon N, Mcmullen MD, Kaeppler SM, Buckler ES. The genetic architecture of maize stalk strength. PLoS ONE. 2013;8(6): e67066.
2. Li W, Liu W, Liu L, You M, Liu G, Li B. QTL mapping for wheat flour color with additive, epistatic, and QTL × environmental interaction effects. Sci Agric Sin. 2011;10(5):651–60.
3. Flint-García SA, Mcmullen MD, Darrah LL. Genetic relationship of stalk strength and ear height in maize. Crop Sci. 2003;43:23–31.
4. Flint-García SA, Jampatong C, Darrah LL, McMullen MD. Quantitative trait locus analysis of stalk strength in four maize populations. Crop Sci. 2003;43:13–22.
5. Duvick DN, Cassman KG. Post–green revolution trends in yield potential of temperate maize in the north-central united states. Crop Sci. 1999;39(6):1622–30.
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