Genetic (SSRs) versus morphological differentiation of date palm cultivars: Fst versus Pst estimates

Date Palm (Phoenix dactylifera L.) is one of the oldest domesticated fruit trees. For future breeding program, knowledge on genetic structure of cultivars is necessary. Therefore, the present study was performed with the following aims: 1- To provide data on genetic diversity and genetic structure...

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Autores principales:	Somayeh Saboori, Masoud Sheidai, Zahra Noourmohammadi, Seyed Samih Marashi, Fahimeh Koohdar
Formato:	article
Lenguaje:	EN
Publicado:	Firenze University Press 2021
Materias:	Date palm, Genetic variability, Genetic structure, PST index, Population assignment Biology (General) QH301-705.5 Cytology QH573-671
Acceso en línea:	https://doaj.org/article/86fd2cd312d74bc784a21ac108b6baca
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spelling	oai:doaj.org-article:86fd2cd312d74bc784a21ac108b6baca2021-12-05T20:35:22ZGenetic (SSRs) versus morphological differentiation of date palm cultivars: Fst versus Pst estimates 10.36253/caryologia-10890008-71142165-5391https://doaj.org/article/86fd2cd312d74bc784a21ac108b6baca2021-11-01T00:00:00Zhttps://riviste.fupress.net/index.php/caryologia/article/view/1089https://doaj.org/toc/0008-7114https://doaj.org/toc/2165-5391 Date Palm (Phoenix dactylifera L.) is one of the oldest domesticated fruit trees. For future breeding program, knowledge on genetic structure of cultivars is necessary. Therefore, the present study was performed with the following aims: 1- To provide data on genetic diversity and genetic structure of 36 date palm cultivars, 2- To provide data on the association between fruit characteristics and the genetic features of the cultivars. We used nine SSRs and EST-SSR loci for our genetic investigation. The most of SSR loci obtained have a high Gst value (0.70), and therefore have a good discrimination power for date palm cultivar differentiation task. K-Means clustering grouped date palm cultivars either in two broad clusters, or in 16 smaller genetic groups. This was supported by delta K = 2 of the STRUCTURE analysis. AMOVA produced significant genetic difference among date palm cultivars (PhiPT = 0.70, P = 0.001). New genetic differentiation parameters estimated also produced significant difference among date palm cultivars (G’st(Nei) = 0.673, P =0.001; G’st(Hed) = 0.738, P = 0.001). Test of assignment revealed that some of the cultivars have 33-66% misassignment, probably due to genetic admixture. Heatmaps of genetic versus morphological/or agronomical characters in date palm cultivars differed from each other showing the cultivars morphological changes is not merely related to their genetic content. It points toward the potential role played either by environmental conditions or local selection practice. The new findings can be utilized in future conservation and breeding of date palms in the country. Somayeh SabooriMasoud SheidaiZahra NoourmohammadiSeyed Samih MarashiFahimeh KoohdarFirenze University PressarticleDate palm, Genetic variability, Genetic structure, PST index, Population assignmentBiology (General)QH301-705.5CytologyQH573-671ENCaryologia (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Date palm, Genetic variability, Genetic structure, PST index, Population assignment Biology (General) QH301-705.5 Cytology QH573-671
spellingShingle	Date palm, Genetic variability, Genetic structure, PST index, Population assignment Biology (General) QH301-705.5 Cytology QH573-671 Somayeh Saboori Masoud Sheidai Zahra Noourmohammadi Seyed Samih Marashi Fahimeh Koohdar Genetic (SSRs) versus morphological differentiation of date palm cultivars: Fst versus Pst estimates
description	Date Palm (Phoenix dactylifera L.) is one of the oldest domesticated fruit trees. For future breeding program, knowledge on genetic structure of cultivars is necessary. Therefore, the present study was performed with the following aims: 1- To provide data on genetic diversity and genetic structure of 36 date palm cultivars, 2- To provide data on the association between fruit characteristics and the genetic features of the cultivars. We used nine SSRs and EST-SSR loci for our genetic investigation. The most of SSR loci obtained have a high Gst value (0.70), and therefore have a good discrimination power for date palm cultivar differentiation task. K-Means clustering grouped date palm cultivars either in two broad clusters, or in 16 smaller genetic groups. This was supported by delta K = 2 of the STRUCTURE analysis. AMOVA produced significant genetic difference among date palm cultivars (PhiPT = 0.70, P = 0.001). New genetic differentiation parameters estimated also produced significant difference among date palm cultivars (G’st(Nei) = 0.673, P =0.001; G’st(Hed) = 0.738, P = 0.001). Test of assignment revealed that some of the cultivars have 33-66% misassignment, probably due to genetic admixture. Heatmaps of genetic versus morphological/or agronomical characters in date palm cultivars differed from each other showing the cultivars morphological changes is not merely related to their genetic content. It points toward the potential role played either by environmental conditions or local selection practice. The new findings can be utilized in future conservation and breeding of date palms in the country.
format	article
author	Somayeh Saboori Masoud Sheidai Zahra Noourmohammadi Seyed Samih Marashi Fahimeh Koohdar
author_facet	Somayeh Saboori Masoud Sheidai Zahra Noourmohammadi Seyed Samih Marashi Fahimeh Koohdar
author_sort	Somayeh Saboori
title	Genetic (SSRs) versus morphological differentiation of date palm cultivars: Fst versus Pst estimates
title_short	Genetic (SSRs) versus morphological differentiation of date palm cultivars: Fst versus Pst estimates
title_full	Genetic (SSRs) versus morphological differentiation of date palm cultivars: Fst versus Pst estimates
title_fullStr	Genetic (SSRs) versus morphological differentiation of date palm cultivars: Fst versus Pst estimates
title_full_unstemmed	Genetic (SSRs) versus morphological differentiation of date palm cultivars: Fst versus Pst estimates
title_sort	genetic (ssrs) versus morphological differentiation of date palm cultivars: fst versus pst estimates
publisher	Firenze University Press
publishDate	2021
url	https://doaj.org/article/86fd2cd312d74bc784a21ac108b6baca
work_keys_str_mv	AT somayehsaboori geneticssrsversusmorphologicaldifferentiationofdatepalmcultivarsfstversuspstestimates AT masoudsheidai geneticssrsversusmorphologicaldifferentiationofdatepalmcultivarsfstversuspstestimates AT zahranoourmohammadi geneticssrsversusmorphologicaldifferentiationofdatepalmcultivarsfstversuspstestimates AT seyedsamihmarashi geneticssrsversusmorphologicaldifferentiationofdatepalmcultivarsfstversuspstestimates AT fahimehkoohdar geneticssrsversusmorphologicaldifferentiationofdatepalmcultivarsfstversuspstestimates
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Genetic (SSRs) versus morphological differentiation of date palm cultivars: Fst versus Pst estimates

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