Estimation of Genetic Variance Components for Corn Ear Rot in RIL Populations Derived from Three Biparental Crosses

IF 1 4区 生物学 Q3 BIOLOGY Brazilian Archives of Biology and Technology Pub Date : 2023-09-04 DOI:10.1590/1678-4324-2023220838
Yanel Emilce Belich, G. Pratta
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引用次数: 0

Abstract

: Classical Quantitative Genetics offers statistical approaches to estimate variance components of important agronomical traits, such as diseases resistance, through different experimental designs. However, the use of RIL in these approaches is limited. As Recombinant Inbred Lines are considered important for developing special breeding projects, we propose a new methodological approach to simultaneously estimate broad and narrow sense heritabilities. This proposed model was applied to calculate heritabilities for resistance to corn ear rots caused by Fusarium verticillioides in three independent RIL populations analyzed by nested ANOVA. Fusarium Incidence (%) and Fusarium Severity heritabilities were significant. The proposed approach proved to be useful for estimating broad and narrow sense heritabilities in the same environment and with these genotypes which is advantageous for corn breeders.
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三个双亲本杂交组合RIL群体玉米穗腐病遗传变异成分的估计
经典数量遗传学通过不同的实验设计,为估计重要农艺性状(如抗病性)的变异成分提供了统计方法。然而,在这些方法中使用RIL是有限的。由于重组自交系在特殊育种项目中具有重要意义,我们提出了一种同时估计广义遗传力和狭义遗传力的新方法。应用该模型计算了3个独立RIL群体对玉米穗腐病抗性的遗传力,并进行了巢式方差分析。赤霉病发病率(%)和严重程度遗传率显著。结果表明,该方法可用于估算同一环境下不同基因型玉米的广义和狭义遗传力,有利于玉米育种。
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来源期刊
CiteScore
1.80
自引率
0.00%
发文量
116
审稿时长
3 months
期刊介绍: Information not localized
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