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 (171.1 mM NaCl). 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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Communicated by H. F. Linskens
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Bretó, M.P., Aśins, M.J. & Carbonell, E.A. Salt tolerance in Lycopersicon species. III. Detection of quantitative trait loci by means of molecular markers. Theoret. Appl. Genetics 88, 395–401 (1994). https://doi.org/10.1007/BF00223650
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DOI: https://doi.org/10.1007/BF00223650