Tests of taxonomic andbiogeographic predictivity      Shelley Jansky, USDA      Reinhard Simon, CIP      David Spooner, USDA
Background“[Prediction] means that one can describe atrait as characteristic of all members of ataxon before it has been v...
Germplasm~40 species (~150 accessions)14 of Hawkes’ 19 series4 plastid-based clades + 1 outgroup1, 2, 4, EBN2x, 4x, 6x
Tests of predictivityWhite mold– Sclerotinia sclerotiorum– Foliar fungusEarly blight– Alternaria solani– Foliar fungusColo...
Resistance to White Mold                                           S. commersonii (Commersoniana, 4, 1, 2x)               ...
Resistance to Early Blight                                                    S. neorossii (Tuberosa, 4, ?, 2x)           ...
Resistant to Early BlightSusceptible to Early Blight
Resistance to Colorado Potato Beetle                                               S. pinnatisectum (Pinnatisecta, 1, 1, 2...
Resistance to Soft Rot                                               S. paucijugum (Conicibaccata, 3, 2, 4x)              ...
Resistance to Potato Virus Y(Phytopath 2011 101:1074)
Accessions evaluated for       Accessions with resistanceresistance to potato virus Y   to potato virus Y
WM   EB   CPB   SR   PVYS. bukasovii (2x, 2)                                     X          X    XS. bulbocastanum (2x,1) ...
WM   EB   CPB   SR   PVYS. bukasovii (2x, 2)                                     X          X    XS. bulbocastanum (2x,1) ...
ConclusionsSignificant differences among accessionsand genotypes within a speciesSignificant differences among species,ser...
Shelley Jansky's and Reinhard Simon's talk on taxonomic and biogeographic predictivity in the framework of the expert cons...
Upcoming SlideShare
Loading in …5
×

Shelley Jansky's and Reinhard Simon's talk on taxonomic and biogeographic predictivity in the framework of the expert consultation on the use of crop wild relatives for pre-breeding in potato

488 views

Published on

The expert consultation on the use of crop wild relatives for pre-breeding in potato was a workshop organized by the Global Crop Diversity Trust in collaboration with CIP and took place from the 22nd – 24th of February 2012.

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
488
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • Inductive = Making a generalization from specific cases
  • Shelley Jansky's and Reinhard Simon's talk on taxonomic and biogeographic predictivity in the framework of the expert consultation on the use of crop wild relatives for pre-breeding in potato

    1. 1. Tests of taxonomic andbiogeographic predictivity Shelley Jansky, USDA Reinhard Simon, CIP David Spooner, USDA
    2. 2. Background“[Prediction] means that one can describe atrait as characteristic of all members of ataxon before it has been verified for all.”(Warburton, 1967)“A primary function of classification is toconstruct classes about which we can makeinductive generalizations.” (Gilmour, 1951)“One of the greatest assets of a soundclassification is its predictive value.” (Mayr, 1969)
    3. 3. Germplasm~40 species (~150 accessions)14 of Hawkes’ 19 series4 plastid-based clades + 1 outgroup1, 2, 4, EBN2x, 4x, 6x
    4. 4. Tests of predictivityWhite mold– Sclerotinia sclerotiorum– Foliar fungusEarly blight– Alternaria solani– Foliar fungusColorado potato beetle– Leptinotarsa decemlineata– Defoliating insectSoft rot– Pectobacterium carotovorum– BacteriumPotato virus Y
    5. 5. Resistance to White Mold S. commersonii (Commersoniana, 4, 1, 2x) S. palustre (outgroup, O, 1, 2x) S. schenckii (Demissa, 4, 4, 6x)Species (series, clade, EBN, ploidy) S. violaceimarmoratum (Conicibaccata, 4, 2, 2x) S. etuberosum (outgroup, O, 1, 2x) S. sparsipilum (Tuberosa, 4, 2, 2x) S. pinnatisectum (Pinnatisecta, 1, 1, 2x) S. chacoense (Yungasensa, 4, 2, 2x) S. tarijense (Yungasensa, 4, 2, 2x) S. bulbocastanum (Bulbocastana, 2, 1, 2x) S. acaule (Acaulia, 4, 2, 4x) S. chomatophilum (Conicibaccata, 3, 2, 2x) S. raphanifolium (Megistacroloba, 4, 2, 2x) S. jamesii (Pinnatisecta, 1, 1, 2x) S. demissum (Demissa, 4, 1, 2x) 0 500 1000 1500 2000 2500 3000 3500 4000 (Crop Sci 2006 46:2561) Mean Rank Score
    6. 6. Resistance to Early Blight S. neorossii (Tuberosa, 4, ?, 2x) S. commersonii (Commersoniana, 4, 1, 2x)Species (series, clade, EBN, ploidy) S. tarijense (Yungasensa, 4, 2, 2x) S. raphanifolium (Megistacroloba, 4, 2, 2x) S. bulbocastanum (Bulbocastana, 2, 1, 2x) S. andreanum (Tuberosa, 3, 2, 2x) S. sparsipilum (Tuberosa, 4, 2, 2x) S. megistacrolobum (Megistacroloba, 4, 2, 2x) S. acaule (Acaulia, 4, 2, 4x) S. demissum (Demissa, 4, 1, 2x) S. brevicaule (Tuberosa, 4, 2, 2x) S. microdontum (Tuberosa, 4, 2, 2x) S. paucijugum (Conicibaccata, 3, 2, 4x) S. albicans (Acaulia, 4, 4, 6x) S. bukasovii (Tuberosa, 4, 2, 2x) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 (Phytopath 2008 98:680) Early Blight Score
    7. 7. Resistant to Early BlightSusceptible to Early Blight
    8. 8. Resistance to Colorado Potato Beetle S. pinnatisectum (Pinnatisecta, 1, 1, 2x) S. immite (Tuberosa, 3, 1, 2x) S. polyadenium (Polyadenia, 1, 1, 2x)Species (series, clade, EBN, ploidy) S. albornozii (Piurana, 3, 2, 2x) S. chacoense (Yungasensa, 4, 2, 2x) S. neorossii (Tuberosa, 4, ?, 2x) S. jamesii (Pinnatisecta, 1, 1, 2x) S. tarijense (Yungasensa, 4, 2, 2x) S. commersonii (Commersoniana, 4, 1, 2x) S. chomatophilum (Conicibaccata, 3, 2, 2x) S. stenophyllidium (Pinnatisecta, 1, 1, 2x) S. demissum (Demissa, 4, 1, 2x) S. palustre (outgroup, O, 1, 2x) S. violaceimarmoratum (Conicibaccata, 4, 2, 2x) S. lesteri (Polyadenia, 1, 1, 2x) 0 100 200 300 400 500 600 700 800 900 (J Econ Entomol 2009 102:422) AUDPC
    9. 9. Resistance to Soft Rot S. paucijugum (Conicibaccata, 3, 2, 4x) S. brevicaule (Tuberosa, 4, 2, 2x) S. commersonii (Commersoniana, 4, 1, 2x)Species (series, clade, EBN, ploidy) S. violaceimarmoratum (Conicibaccata, 4, 2, 2x) S. verrucosum (Tuberosa, 4, 2, 2x) S. bukasovii (Tuberosa, 4, 2, 2x) S. microdontum (Tuberosa, 4, 2, 2x) S. colombianum (Conicibaccata, 4, 2, 4x) S. sparsipilum (Tuberosa, 4, 2, 2x) S. boliviense (Megistacroloba, 4, 2, 2x) S. megistacrolobum (Megistacroloba, 4, 2, 2x) S. chacoense (Yungasensa, 4, 2, 2x) S. chomatophilum (Conicibaccata, 3, 2, 2x) S. cardiophyllum (Pinnatisecta, 2, 1, 2x) S. albicans (Acaulia, 4, 4, 6x) 0 5 10 15 20 25 30 35 40 45 50 (Phytopathol 2010 101:205) Mean Rank Score
    10. 10. Resistance to Potato Virus Y(Phytopath 2011 101:1074)
    11. 11. Accessions evaluated for Accessions with resistanceresistance to potato virus Y to potato virus Y
    12. 12. WM EB CPB SR PVYS. bukasovii (2x, 2) X X XS. bulbocastanum (2x,1) X X X XS. chacoense (2x, 2) X X X XS. chomatophilum (2x, 2) X X XS. commersonii (2x, 1) X X X XS. demissum (2x, 1) X X XS. jamesii (2x, 1) X X XS. microdontum (2x, 2) X X XS. pinnatisectum (2x, 1) X X XS. sparsipilum (2x, 2) X X XS. tarijense (2x, 2) X X XS. violaceimarmoratum (2x, 2) X X X
    13. 13. WM EB CPB SR PVYS. bukasovii (2x, 2) X X XS. bulbocastanum (2x,1) X X X XS. chacoense (2x, 2) X X X XS. chomatophilum (2x, 2) X X XS. commersonii (2x, 1) X X X XS. demissum (2x, 1) X X XS. jamesii (2x, 1) X X XS. microdontum (2x, 2) X X XS. pinnatisectum (2x, 1) X X XS. sparsipilum (2x, 2) X X XS. tarijense (2x, 2) X X XS. violaceimarmoratum (2x, 2) X X X
    14. 14. ConclusionsSignificant differences among accessionsand genotypes within a speciesSignificant differences among species,series, clades, EBN, and ploidy levelsNo taxonomic grouping criterion identifiedthe most resistant speciesSome biogeographic parameterssometimes predicted the distribution ofresistance traits

    ×