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<p>Henna (<i>Lawsonia inermis</i> L.) is an economic and medicinal plant which is widely used in medical, dyeing and cosmetics industries. This plant causes therapeutic effects on health duo to its bioactive compounds. According to the importance of investigating association between marker polymorphism and phenotypic traits as a valuable tool in breeding programs, this study was performed to determine population structure and the relationships among marker loci and important traits in 140 henna ecotypes at 2020. Association analysis was performed between 6 traits to 106 polymorphic loci generated by 9 inter simple sequence repeat (ISSR) primers. The population structure analysis indicated three main subpopulations with significant genetic differences defined by the&#xa0;analysis of molecular variance&#xa0;(AMOVA) results. The results of association analysis based mixed linear model (MLM) and general linear model (GLM) indicated that T(GA)9-5 marker had a highly significant relationship (<i>P</i> &lt; 0.0001) with leaf area trait. Also, T(GA)9-5, (AG)8&#xa0;T-1, (GTGC)4-8 and T(GA)9-1 markers showed a strong association with dry leaf weight. Four markers T(GA)9-5, (AG)8&#xa0;T-1, T(GA)9-2 and T(GA)9-1 had a strong relationship (<i>P</i> &lt; 0.009) with dry stem weight. (GA)9&#xa0;T-12, T(CA)8-7 and T(CA)8-12 markers indicated a significant relationship with plant height based on both MLM and GLM models. Defined markers could be suitable candidates to be used for marker-assisted breeding techniques in henna.</p>

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Marker-trait association analysis and population structure in core collection of Lawsonia inermis L. ecotypes cultivated in semi-arid conditions

  • 期刊论文

  • 发表日期：

    2025年9月28日

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  • Beheshteh Khandani Zadeh,
  • Ardalan Alizadeh,
  • Ahmad Aien,
  • Ghasem Mohammadi Nejad,
  • Fatemeh Ebrahimi,
  • Samira Hossein Jafari

摘要

Henna (Lawsonia inermis L.) is an economic and medicinal plant which is widely used in medical, dyeing and cosmetics industries. This plant causes therapeutic effects on health duo to its bioactive compounds. According to the importance of investigating association between marker polymorphism and phenotypic traits as a valuable tool in breeding programs, this study was performed to determine population structure and the relationships among marker loci and important traits in 140 henna ecotypes at 2020. Association analysis was performed between 6 traits to 106 polymorphic loci generated by 9 inter simple sequence repeat (ISSR) primers. The population structure analysis indicated three main subpopulations with significant genetic differences defined by the analysis of molecular variance (AMOVA) results. The results of association analysis based mixed linear model (MLM) and general linear model (GLM) indicated that T(GA)9-5 marker had a highly significant relationship (P < 0.0001) with leaf area trait. Also, T(GA)9-5, (AG)8 T-1, (GTGC)4-8 and T(GA)9-1 markers showed a strong association with dry leaf weight. Four markers T(GA)9-5, (AG)8 T-1, T(GA)9-2 and T(GA)9-1 had a strong relationship (P < 0.009) with dry stem weight. (GA)9 T-12, T(CA)8-7 and T(CA)8-12 markers indicated a significant relationship with plant height based on both MLM and GLM models. Defined markers could be suitable candidates to be used for marker-assisted breeding techniques in henna.