Analysis of the genetic diversity and population structure of Salix psammophila based on phenotypic traits and simple sequence repeat markers

PeerJ
Lei HaoHuixia Jia

Abstract

Salix psammophila (desert willow) is a shrub endemic to the Kubuqi Desert and the Mu Us Desert, China, that plays an important role in maintaining local ecosystems and can be used as a biomass feedstock for biofuels and bioenergy. However, the lack of information on phenotypic traits and molecular markers for this species limits the study of genetic diversity and population structure. In this study, nine phenotypic traits were analyzed to assess the morphological diversity and variation. The mean coefficient of variation of 17 populations ranged from 18.35% (branch angle (BA)) to 38.52% (leaf area (LA)). Unweighted pair-group method with arithmetic mean analysis of nine phenotypic traits of S. psammophila showed the same results, with the 17 populations clustering into five groups. We selected 491 genets of the 17 populations to analyze genetic diversity and population structure based on simple sequence repeat (SSR) markers. Analysis of molecular variance (AMOVA) revealed that most of the genetic variance (95%) was within populations, whereas only a small portion (5%) was among populations. Moreover, using the animal model with SSR-based relatedness estimated of S. psammophila, we found relatively moderate heritability values f...Continue Reading

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Citations

Nov 18, 2021·PhytoKeys·Jacek UrbaniakPaweł Pawlikowski

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Methods Mentioned

BETA
electrophoresis
PCR
genotyping

Software Mentioned

Gene Marker
R
lmerTest
lme4
MapGIS
CALC
MEGA3
Data Processing System
Populations
STRUCTURE

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