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Identification of an RAPD Marker Linked to the Vf Gene for Scab Resistance in Apples
Author(s) -
Yang Hongyu,
Krüger Jutta
Publication year - 1994
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.1439-0523.1994.tb00691.x
Subject(s) - biology , rapd , introgression , venturia inaequalis , genetic marker , malus , genomic dna , gene , genetics , apple scab , botany , cultivar , population , genetic diversity , demography , sociology , fungicide
Abstract Resistance to V. inaequalis , derived from the small‐fruited species Malus floribunda 821, is determined by a major dominant gene, assigned as Vf. The material used in this paper is based on the introgression of the Vf gene from M. floribunda into commercial apple varieties. Comparing RAPD patterns of a genomic DNA sample of M. floribunda with a pooled DNA sample of resistant individuals and that of 10 susceptible commercial apple varieties, fragments were identified which are derived from M. floribunda. One of them, the fragment OPD20/600, proved to be linked to the Vf gene with a recombination value of about 0.20—0.25. It is the first DNA marker so far for scab resistance.