Genetic analysis of agronomic traits in elite sugarcane (Saccharum spp.) germplasm.

PloS One
Fenggang ZanXiping Yang

Abstract

Sugarcane (Saccharum spp.) is an important economic crop, supplying up to 80% of the table sugar and ~60% of bio-ethanol worldwide. Due to population growth and dwindling fossil-fuel reserves, the demand for sugar and bio-ethanol requires significant improvement in sugarcane production. Breeding sugarcane cultivars with high-performance agronomic traits is undoubtedly the most efficient way to achieve this goal. Therefore, evaluating agronomic traits and dissecting underlying loci are critically important for this aim steps in providing genetic resources and molecular markers for selection. In this study, we assembled a diversity panel of 236 elite sugarcane germplasms originally collected from 12 countries. We evaluated 28 agronomic traits in the diversity panel with three replicates. The diversity panel was genotyped using amplified fragment length polymorphism markers, and a total of 1,359 markers were generated. Through the genome-wide association study, we identified three markers significantly associated with three traits evaluated at a stringent threshold (P < 0.05 after Bonferroni correction). The genotypes of the three associated markers grouped respective trait values into two distinct groups, supporting the reliabili...Continue Reading

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Citations

Jul 16, 2021·PloS One·João de Andrade Dutra FilhoMaria Lindomárcia Leonardo da Costa

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Methods Mentioned

BETA
dissecting
genotyping
electrophoresis
PCR

Software Mentioned

Molecular Evolutionary Genetics Analysis
R
adegenet
DAPC
Hmisc
agricolae
MEGA

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