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The Importance of the Bolivian Wild Potato Species in Breeding for Globodera pallida Resistance
Author(s) -
Jackson M. T.,
Hawkes J. G.,
MaleKayiwa Beatrice S,
Wanyera N. W. M.
Publication year - 1988
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1988.tb00298.x
Subject(s) - globodera pallida , biology , solanum tuberosum , subspecies , potato cyst nematode , solanaceae , nematode , ploidy , globodera rostochiensis , botany , industrial crop , resistance (ecology) , pest analysis , interspecific hybridization , solanum , hybrid , horticulture , agronomy , zoology , ecology , genetics , gene
Screening for resistance to the potato cyst nematode, Globodera pallida , in potatoes from. Bolivia, was carried out in 1983 and 1984, using a mixture of four nematode populations representing pathotypes Pa 1 , Pa 2 and Pa 3 From the 66 accessions of 17 species and subspecies evaluated, highly resistant genotypes were identified in 21 accessions from seven species. All had Pf/Pi values of 2 or less, whereas the susceptible control, Solanum tuberosum cv. ‘Disiree’ had Pf/Pi values of more than 2G in both tests. Two diploid wild species, S. brevicaule and S. leptophyes , showed the best resistant. The geographical distributional of resistant populations and the evolution of resistance in wild potato populations are discussed.