2018 Vegetable Production Handbook Chapter 7: Cucurbit Production

Freeman, Josh H.; McAvoy, Eugene; Boyd, Nathan S.; Ozores-Hampton, Mónica; Paret, Mathews L.; Wang, Qingren; Miller, Christian F.; Desaeger, Johan; Noling, Joseph W.; Martini, Xavier

doi:10.32473/edis-cv123-2018

EDIS

2018

DOI: 10.32473/edis-cv123-2018

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2018 Vegetable Production Handbook Chapter 7: Cucurbit Production

Josh H. Freeman

Eugene McAvoy²,

Nathan S. Boyd³

et al.

Abstract: This 28-page fact sheet is chapter 7 of the 2018 Vegetable Production Handbook. Written by Josh H. Freeman, Eugene J. McAvoy, Nathan S. Boyd, Monica Ozores-Hampton, Mathews Paret, Qingren Wang, Christian F. Miller, Johan Desaeger, Joseph W. Noling, and Xavier Martini, and published by the Horticultural Sciences Department, 2018. HS725/CV123: Chapter 7. Cucurbit Production (ufl.edu)

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Genomic Position and Markers Associated with the Hull-Less Seed Trait in Pumpkin

Meru

Shrestha

et al. 2022

Plants

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Pumpkin (Cucurbita pepo) seeds are nutritious and valued as a source of vegetable oil, protein, healthy fatty acids, and minerals. Pumpkin seeds that are naturally devoid of the seedcoat (hull-less) are preferred by the industry as they eliminate the need for de-hulling prior to use. A single recessive gene, designated as n or h, controls the hull-less seed trait in pumpkin. Visual selection for the trait is easy, however, it is resource intensive when applied to large breeding populations. High throughput genotyping assays can aid in the identification of suitable individuals in segregating populations through marker-assisted selection. In the current study, the QTL-seq approach was used to identify genetic loci, SNP markers and candidate genes associated with the hull-less trait in a segregating F2 population (n = 143) derived from a cross between Kakai (hull-less) × Table Gold Acorn (hulled). The segregation of the hull-less trait in the F2 population fit a 3:1 ratio (p < 0.05). QTL-seq analysis detected a single QTL on chromosome 12 (Qtlhull-less-C12) which was significantly associated with the hull-less trait in C. pepo. Twenty-eight SNPs were genotyped in the population, two among which (Ch12_3412046 and Ch12_3417142) were significantly associated (p < 0.05) with the hull-less trait in cultivars and accessions of diverse genetic background. Several candidate genes fall within the Qtlhull-less-C12 interval, among them is the No Apical meristem (NAC) domain-containing protein and a Fiber Protein fb11 gene involved in lignin accumulation and cell wall deposition across plant species, respectively. The findings of this study will facilitate the marker-assisted selection for the hull-less seed trait in pumpkin and further our understanding of the functional mechanisms underlying the trait across cucurbit crops.

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Genomic Position and Markers Associated with the Hull-Less Seed Trait in Pumpkin

Meru

Shrestha

et al. 2022

Plants

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show abstract

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2018 Vegetable Production Handbook Chapter 7: Cucurbit Production

Cited by 1 publication

References 0 publications

Genomic Position and Markers Associated with the Hull-Less Seed Trait in Pumpkin

Genomic Position and Markers Associated with the Hull-Less Seed Trait in Pumpkin

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