scholarly journals Prediction based on estimated breeding values using genealogy for tuber yield and late blight resistance in auto-tetraploid potato (Solanum tuberosum L.)

Heliyon ◽  
2020 ◽  
Vol 6 (11) ◽  
pp. e05624
Author(s):  
Salej Sood ◽  
Vinay Bhardwaj ◽  
S.K. Kaushik ◽  
Sanjeev Sharma
Keyword(s):  
Solanum Tuberosum ◽  
Late Blight ◽  
Tuber Yield ◽  
Solanum Tuberosum L ◽  
Late Blight Resistance ◽  
Blight Resistance ◽  
Breeding Values ◽  
Tetraploid Potato ◽  
Estimated Breeding Values

scholarly journals Global multi-environment resistance QTL for foliar late blight resistance in tetraploid potato with tropical adaptation

2021 ◽  
Author(s):  
Hannele Lindqvist-Kreuze ◽  
Bert De Boeck ◽  
Paula Unger ◽  
Dorcus Gemenet ◽  
Xianping Li ◽  
...  
Keyword(s):  
Late Blight ◽  
Fixed Effects ◽  
Rapid Evolution ◽  
Late Blight Resistance ◽  
Selection Strategy ◽  
Blight Resistance ◽  
Field Exposure ◽  
Prediction Ability ◽  
Tetraploid Potato

Abstract The identification of environmentally-stable and globally-predictable resistance to potato late blight is challenged by the clonal and polyploid nature of the crop and the rapid evolution of the pathogen. A diversity panel of tetraploid potato germplasm bred for multiple resistance and quality traits was genotyped by genotyping by sequencing (GBS) and evaluated for late blight resistance in three countries where the International Potato Center (CIP) has established breeding work. Health-indexed, in vitro plants of 380 clones and varieties were distributed from CIP headquarters and tuber seed was produced centrally in Peru, China and Ethiopia. Phenotypes were recorded following field exposure to local isolates of Phytophthora infestans. QTL explaining resistance in four experiments conducted across the three countries were identified in chromosome IX, and environment-specific QTL were found in chromosomes III, V, and X. Different genetic models were evaluated for prediction ability to identify best performing germplasm in each and all environments. The best prediction ability (0.868) was identified with the genomic best linear unbiased predictors (GBLUPs) when using the diploid marker data and QTL-linked markers as fixed effects. Genotypes with high levels of resistance in all environments were identified from the B3, LBHT, and B3-LTVR populations. The results show that many of the advanced clones bred in Peru for high levels of late blight resistance maintain their resistance in Ethiopia and China, suggesting that the centralized selection strategy has been largely successful.

Resistance to Phytophthora infestans Clonal Lineage US-23 in Potato Cultivars and Its Relationship with Early Blight Resistance and Tuber Yield

Plant Disease ◽  
2021 ◽  
Author(s):  
Weiya Xue ◽  
Kathleen G. Haynes ◽  
Xinshun Qu
Keyword(s):  
Late Blight ◽  
Phytophthora Infestans ◽  
Early Blight ◽  
Tuber Yield ◽  
Late Blight Resistance ◽  
Field Trials ◽  
Potato Cultivars ◽  
Blight Resistance ◽  
Clonal Lineage ◽  
Progress Curve

Resistance to late blight, caused by Phytophthora infestans clonal lineage US-23, in 217 old and modern potato cultivars was evaluated in field trials in 2016 and 2017 in Pennsylvania. Significant differences in resistance were found among these cultivars (P < 0.0001). Significant interaction between cultivars and environments was found (P < 0.0001). The values of relative area under the disease progress curve ranged from 0 to 0.5841 in 2016 and from 0 to 0.5469 in 2017. Broad-sense heritability of late blight resistance was estimated to be 0.91 with a 95% confidence interval of 0.88 to 0.93. Cluster analysis classified the cultivars into 5 groups: resistant, moderately resistant, intermediate, moderately susceptible, and susceptible. Thirty cultivars showing resistance and 32 cultivars showing moderate resistance were identified. The 217 cultivars were also evaluated for foliar maturity, tuber yield and resistance to early blight, caused by Alternaria solani. A few cultivars with late blight resistance independent of late maturity were found. Late blight resistance and early blight resistance were positively correlated, and 17 cultivars possessed resistance to both diseases. Yield tradeoff associated with late blight resistance was not observed among the cultivars in the absence of disease pressure.

KASP markers validation for late blight, PCN and PVY resistance in a large germplasm collection of tetraploid potato (Solanum tuberosum L.)

2022 ◽  
Vol 295 ◽  
pp. 110859
Author(s):  
Salej Sood ◽  
Vinay Bhardwaj ◽  
Kumar N. Chourasia ◽  
Ratna Preeti Kaur ◽  
Vinod Kumar ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Late Blight ◽  
Solanum Tuberosum L ◽  
Germplasm Collection ◽  
Tetraploid Potato ◽  
Pvy Resistance ◽  
Kasp Markers

scholarly journals Tagging QTLs for late blight resistance and plant maturity from diploid wild relatives in a cultivated potato (Solanum tuberosum) background

2007 ◽  
Vol 115 (1) ◽  
pp. 101-112 ◽  
Author(s):  
J. Śliwka ◽  
H. Jakuczun ◽  
R. Lebecka ◽  
W. Marczewski ◽  
C. Gebhardt ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Late Blight ◽  
Late Blight Resistance ◽  
Wild Relatives ◽  
Blight Resistance ◽  
Cultivated Potato ◽  
Plant Maturity
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