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Genetic variation among pumpkin landraces based on seed qualities and molecular markers

Abstract

Background

Germplasm identification is an essential connection linking the conservation and exploitation of crop genetic resources in several plant breeding programs. This study highlights the biochemical and molecular variations in a collection of pumpkin genotypes representing four climate zones. The information could help improve germplasm management and sustainable exploitation of the neglected genotypes.

Methods and results

Chemical characterization and genetic diversity among nine Egyptian landraces of pumpkin (Cucurbita moschata Duchesne) were estimated using Diode Array (DDA) Near Infra-Red (NIR) technology and the Inter simple Sequence Repeat markers (ISSR). Pumpkin seeds were collected from various geographical parts of Egypt. The spectroscopic properties of pumpkin seeds were used to quantify the fat, moisture, protein, ash, fiber, and total carbohydrate contents. The ten ISSR primers generated a total number of 46 genotype-specific bands, and the total polymorphism produced in the tested landraces was 63.58%. Based on the ISSR data, the polymorphism analysis divided the nine pumpkin landraces into two main groups, two subgroups, and four sub subgroups. The most diverse pumpkin landraces were Alexandria and Sohag, with a similarity percentage of 49.6%. However, the highest calculated similarity value was 88.3% between Matruh and Gharbia. The resultant genotype-specific bands can be used as markers for future genotypic characterization of pumpkins.

Conclusions

The study results could be helpful in the chemical phenotypic characterization and the parental selection and planning for future breeding programs for pumpkin improvement.

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Data availability

The datasets used or analyzed during the current study are available from the corresponding author upon reasonable request.

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Funding

This research was supported by the Department of Environmental Conservation, University of Massachusetts, Amherst, USA and Mission Sector, Ministry of Higher Education, Egypt.

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Correspondence to Timothy O. Randhir.

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Mady, E., Ibrahim, S.D., Randhir, R. et al. Genetic variation among pumpkin landraces based on seed qualities and molecular markers. Mol Biol Rep 49, 3863–3873 (2022). https://doi.org/10.1007/s11033-022-07233-3

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  • DOI: https://doi.org/10.1007/s11033-022-07233-3

Keywords

  • Cucurbita pepo
  • Chemical analysis
  • Molecular markers
  • ISSR
  • Genetic diversity