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Euphytica

, Volume 204, Issue 1, pp 163–177 | Cite as

Identification of fruit quality and morphology QTLs in melon (Cucumis melo) using a population derived from flexuosus and cantalupensis botanical groups

  • Raghuprakash Kastoori Ramamurthy
  • Brian M. WatersEmail author
Article

Abstract

Fruit traits, such as shape, size, sugar concentration, and β-carotene concentration affect fruit quality in melon. Extensive genetic diversity for these traits can be exploited for breeding purposes. In this study, an F2 mapping population was constructed using an orange fleshed cantaloupe-type melon and an exotic green fleshed “snake melon” to identify quantitative trait loci (QTL) associated with fruit quality and fruit morphological traits. A total of 31 QTLs were identified, of which 23 corroborated previously reported QTLs. A small segment of LG8 explained most of the phenotypic variation for yield. We mapped eight new QTLs for fruit shape, total fruit weight per plant, soluble solids concentration, flesh color, ovary shape and seed cell diameter, and a locus for chlorosis in this study. Soluble solids concentration did not have significant association with average fruit weight and fruit width, suggesting that manipulation of fruit morphology is possible in melon without considerably affecting fruit sweetness. A significant positive association between fruit shape and ovary shape indicated that fruit shape was determined during preanthesis. Our results indicate that natural variation for internal and external melon fruit traits can be further explored by performing QTL analysis of populations derived from crosses between previously unexplored botanical groups.

Keywords

Fruit quality Fruit shape β-Carotene concentration Soluble solids concentration Mapping 

Notes

Acknowledgements

This project was supported in part by Agriculture and Food Research Initiative Competitive Grant no. 2014-67013-21658 from the USDA National Institute of Food and Agriculture. The authors thank Anthony Delaney, Grace Troupe, Sam McInturf, Laura Armbrust, Brad Edeal, and Dr. Ricardo Stein for technical assistance, and Dr. Jim Specht for assistance with linkage mapping software.

Supplementary material

10681_2015_1361_MOESM1_ESM.xlsx (15 kb)
Supplementary material 1 (XLSX 16 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Raghuprakash Kastoori Ramamurthy
    • 1
  • Brian M. Waters
    • 1
    Email author
  1. 1.Department of Agronomy & HorticultureUniversity of Nebraska–LincolnLincolnUSA

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