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Salt Tolerance in Lycopersicon Species .3. Detection of Quantitative Trait Loci by Means of Molecular Markers

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URI
http://hdl.handle.net/20.500.11939/4901
DOI
10.1007/BF00223650
Derechos de acceso
openAccess
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Author
Breto, M. P.; Asins, María J.; Carbonell, Emilio A.
Date
1994
Cita bibliográfica
Breto, M.P., Asins, M.J., Carbonell, E.A. (1994). Salt Tolerance in Lycopersicon Species .3. Detection of Quantitative Trait Loci by Means of Molecular Markers. Theoretical and Applied Genetics, 88(3-4), 395-401.
Abstract
A segregating population derived from a cross between L. esculentum cv Madrigal and a line of L. pimpinellifolium was used to identify genetic markers linked to QTLs involved in salinity tolerance in terms of yield, under a conductivity of 15 dS/m (l71.1 mM NaC1). Six markers resulted, associated with QTLs affecting average fruit weight, fruit number and total weight under salinity. One of them, Aco-1, behaves reversely to the expectation from parental means; this and other features make it a promising target to obtain salt-tolerant tomatoes. Epistatic interactions were also found, thus affecting the criteria for marker-assisted selection. Although only 41% of the loci assayed were polymorphic, a high efficiency in identifying QTLs was achieved, since 43% of the marker loci are linked to QTLs for the trait under study.
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