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Replication Data for: Phenotypic Stability and Correlation for Late Blight Resistance in Advanced Potato Clones Under Field and Controlled Conditions

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Title Replication Data for: Phenotypic Stability and Correlation for Late Blight Resistance in Advanced Potato Clones Under Field and Controlled Conditions
 
Identifier https://doi.org/10.21223/JPWA9G
 
Creator Gastelo, Manuel
Perez, Willmer
Quispe, Katherine
Pozo, Victor
 
Publisher International Potato Center
 
Description Late blight (LB) is the main potato disease worldwide and one of the most important
ways to control it is the use of resistant varieties. Twenty-two potato clones belong to
the B3 breeding population developed by the International Potato Center (CIP) with
high resistance to the disease and two susceptible controls were inoculated with four
Peruvian complex isolates (POX67, PPA61, PLL69, and PPI112) of Phytophthora
infestans, with complex virulence on potato. Whole plant inoculation assays were
carried out under greenhouse and humid chamber conditions in Lima, Peru, and data
obtained were correlated with data from field assays carried out in Oxapampa (Pasco),
a CIP breeding site in the Peruvian rain forest. High significant correlations (α = 0.01)
were found in the resistance to LB shown by potato clones, the values of the
correlations under greenhouse conditions between the isolates POX67, PPA61, and
PLL69 with the resistance in the field were r = 0.93, 0.92 and 0.80, respectively and
under humid chamber conditions were r = 0.94, 0.93 and 0.94, respectively. Moderate
correlations were found between PPI112 insulation with resistance in the field, in
greenhouse (r = 0.69) and in humid chamber conditions (r = 0.77). The twenty-four
clones tested in this study showed phenotypic stability for LB resistance according to
non-parametric analysis.
 
Subject Agricultural Sciences
Potatoes
Breeding
Pathology
Yiled
AUDPC ranking
Non-parametric Stability
Greenhouse
Humid Chamber
 
Language English
 
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International Potato Center
CGIAR Research Program on Roots, Tubers and Bananas (RTB)