Thorough Characterization of , a QTL Involved in Melon Fruit Climacteric Behavior and Aroma Volatile Composition.

The effect of the QTL involved in climacteric ripening on the fruit VOC composition was studied using a set of Near-Isogenic Lines (NILs) containing overlapping introgressions from the Korean accession PI 16375 on the chromosome 3 in the climacteric 'Piel de Sapo' (PS) genetic background. was mapped in an interval of 1.24 Mb that contained a NAC transcription factor.

Shaping melons: agronomic and genetic characterization of QTLs that modify melon fruit morphology.

The consistency of quantitative trait locus (QTL) effects among genetic backgrounds is a key factor for introgressing QTLs from initial mapping experiments into applied breeding programs. We have selected four QTLs (fs6.4, fw4.

On the genetic control of heterosis for fruit shape in melon (Cucumis melo L.).

The objective of the present work is to study the genetic basis of heterosis for fruit shape (FS) in melon observed in a cross between the Spanish cultivar "Piel de Sapo" (PS) and the Korean accession PI 161375 (Songwang Charmi [SC]) using a set of near-isogenic lines (NILs) with contrasting phenotypes for FS, each carrying a single chromosomal introgression from SC within the genetic background of PS. We investigated the FS of homozygous NILs, hybrids NIL x PS, and all 2-way crosses between NILs to test the main heterosis hypotheses (dominance, overdominance, and epistatic interactions). Gene action of alleles of quantitative trait loci inducing fruit enlargement was dominance, whereas those inducing rounder fruit were additive or recessive.

Candidate genes and QTLs for fruit ripening and softening in melon.

Different factors affect the quality of melon fruit and among them long shelf life is critical from the consumer's point of view. In melon, cultivars showing both climacteric and non-climacteric ripening types are found. In this study we have investigated climacteric ripening and fruit softening using a collection of near-isogenic lines (NILs) derived from the non-climacteric melon parental lines PI 161375 (SC) and "Piel de Sapo" (PS).