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A novel QTL associated with dwarf bunt resistance in Idaho 444 winter wheat

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ABSTRACT

A novel qtl, q.db.ui-7ds, and the pcr-based markers identified in the current study will accelerate variety development for resistance to dwarf and common bunt of wheat."/> MedlinePlus

Distribution and correlation of dwarf bunt incidence (%) in the Rio Blanco x IDO444 population among individual environments and the best linear unbiased predictors (BLUP) over the four environments. The diagonal contains histograms of dwarf bunt incidence in each environment, scatterplots with a Lowess smoothing line between each environment in the lower diagonal, and the Spearman’s rank correlation coefficient in the upper diagonal with significance test (triple asterisk indicates significance p < 0.001)
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Fig1: Distribution and correlation of dwarf bunt incidence (%) in the Rio Blanco x IDO444 population among individual environments and the best linear unbiased predictors (BLUP) over the four environments. The diagonal contains histograms of dwarf bunt incidence in each environment, scatterplots with a Lowess smoothing line between each environment in the lower diagonal, and the Spearman’s rank correlation coefficient in the upper diagonal with significance test (triple asterisk indicates significance p < 0.001)

Mentions: Parental lines and RILs had significant genetic variation for HPR reaction to the dwarf bunt inoculation. The resistant parent, IDO444, and the susceptible parent, Rio Blanco, always demonstrated low and high disease incidence, respectively (Table 1). The distribution of bunt incidence in RILs (Fig. 1) was negatively skewed in all environments except USU04. The genetic repeatability as estimated by broad sense heritability of dwarf bunt incidence was high (88–98 %) in all field trials (Table 1). Although environment variance was significant (p = 0.01), it was much smaller than genotypic variance (p < 2e-16) (Table 2). Correlation coefficients were high (0.78 to 0.96) between the four trials (Fig. 1). The genetic repeatability as estimated by broad sense heritability across the four environments was high (0.93, Table 1). Therefore, BLUP of bunt incidence were estimated from the four trials and were utilized in HPR QTL detection along with the mean bunt incidence of RILs in each trial.Table 1


A novel QTL associated with dwarf bunt resistance in Idaho 444 winter wheat
Distribution and correlation of dwarf bunt incidence (%) in the Rio Blanco x IDO444 population among individual environments and the best linear unbiased predictors (BLUP) over the four environments. The diagonal contains histograms of dwarf bunt incidence in each environment, scatterplots with a Lowess smoothing line between each environment in the lower diagonal, and the Spearman’s rank correlation coefficient in the upper diagonal with significance test (triple asterisk indicates significance p < 0.001)
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5121181&req=5

Fig1: Distribution and correlation of dwarf bunt incidence (%) in the Rio Blanco x IDO444 population among individual environments and the best linear unbiased predictors (BLUP) over the four environments. The diagonal contains histograms of dwarf bunt incidence in each environment, scatterplots with a Lowess smoothing line between each environment in the lower diagonal, and the Spearman’s rank correlation coefficient in the upper diagonal with significance test (triple asterisk indicates significance p < 0.001)
Mentions: Parental lines and RILs had significant genetic variation for HPR reaction to the dwarf bunt inoculation. The resistant parent, IDO444, and the susceptible parent, Rio Blanco, always demonstrated low and high disease incidence, respectively (Table 1). The distribution of bunt incidence in RILs (Fig. 1) was negatively skewed in all environments except USU04. The genetic repeatability as estimated by broad sense heritability of dwarf bunt incidence was high (88–98 %) in all field trials (Table 1). Although environment variance was significant (p = 0.01), it was much smaller than genotypic variance (p < 2e-16) (Table 2). Correlation coefficients were high (0.78 to 0.96) between the four trials (Fig. 1). The genetic repeatability as estimated by broad sense heritability across the four environments was high (0.93, Table 1). Therefore, BLUP of bunt incidence were estimated from the four trials and were utilized in HPR QTL detection along with the mean bunt incidence of RILs in each trial.Table 1

View Article: PubMed Central - PubMed

ABSTRACT

A novel qtl, q.db.ui-7ds, and the pcr-based markers identified in the current study will accelerate variety development for resistance to dwarf and common bunt of wheat."/> MedlinePlus