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  • Author or Editor: Amparo García-Luis x
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Mónica Morales, Marisol Luís-Arteaga, José María Álvarez, Ramon Dolcet-Sanjuan, Amparo Monfort, Pere Arús and Jordi Garcia-Mas

The recessive allele (nsv) of the NSV gene confers resistance to the Carmovirus melon necrotic spot virus (MNSV) in melon (Cucumis melo L.). Using an F2 population obtained from the cross between the resistant Korean accession PI 161375 and a susceptible line of `Piel de Sapo', we have mapped the NSV locus to linkage group 11 (G11) of the melon genome. Additional markers closely linked to NSV were developed by bulked segregant analysis (BSA) using a doubled haploid progeny population derived from the same cross. A detailed map of the NSV region was constructed containing 10 markers spanning a distance of 17.7 cM. The nearest flanking markers to NSV were two amplified fragment length polymorphisms (AFLPs) (CTA/ACG-115 and CTA/ACG-120) and one random amplified polymorphic DNA (RAPD) (OPD08-0.80) separated by 5.9 cM. Two more markers, ACC/ACC-110 and OPX15-1.06, cosegregated with NSV.

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Amílcar M.M. Duarte, Amparo García-Luis, Rosa Victoria Molina, Consuelo Monerri, Vicente Navarro, Sergio G. Nebauer, Manuel Sánchez-Perales and Jose Luis Guardiola

A winter gibberellic acid (GA3) spray consistently reduced flower formation, but had a variable effect on the amount of first-grade fruit in the early harvest of `Clausellina' satsuma (Citrus unshiu Marc.), and in the long term these applications had no significant effect on the value of the crop. Auxin applications increased the amount of first grade-early harvested fruit, and increased crop value as compared to hand-thinned trees. No significant differences in yield or fruit grade could be found among the different auxin applications tried, namely an application of 20 mg·L-1 2,4-dichlorophenoxyacetic acid (2,4-D) at flowering, or applications of 25 mg·L-1 naphthaleneacetic acid (NAA), or 50 mg·L-1 2,4-dicholorophenoxypropionic acid (2,4-DP) at the end of fruitlet abscission. Apart from their effect on size, the auxin applications had only a marginal effect on fruit quality.