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<p><i>Aquilaria malaccensis</i> Lam. (Thymelaeaceae) is the most cultivated species as a source of agarwood in India. Agarwood is a resinous wood used in the perfume and incense industry. Simple Sequence Repeats (SSRs) based genetic diversity analysis was carried out in 195 accessions of <i>A. malaccensis</i> collected from all the major agarwood cultivating states in India. Sixty SSRs obtained from the published literature were used for screening. Fifteen markers were identified as polymorphic and used for genotyping. The frequency and genetic distance-based statistical analysis were performed along with population structure analysis. The study resulted in high average values of Observed Heterozygosity and Shannon Index indicating high genetic variability within most of the individuals. Overall low genetic differentiation and high gene flow was also observed. The analysis of molecular variance revealed that most of the genetic variance is partitioned within the population as compared to among population. The STRUCTURE analysis divided all the accessions into two genetic clusters irrespective of their geographical distribution with high admixture. The findings of the current study offer crucial genetic data on <i>A. malaccensis</i> to support management and crop improvement initiatives in India.</p>

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Genetic diversity analysis in Aquilaria malaccensis (Agarwood) in India, a CITES-listed industrial crop using microsatellite markers

  • 期刊论文

  • 发表日期：

    2026年4月1日

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  • Ranjith Layola M. R.,
  • Priya Singh Kushwaha,
  • Bidisha Mallick,
  • Sayan Chakraborty,
  • Farheen Banu,
  • Ranjan Shaw,
  • Oindrila Chakraborty,
  • Sanchayita Sengupta,
  • Sayak Chakraborty,
  • Shabnam Bandyopadhyay,
  • Sudipta Sardar,
  • Tanay Shil,
  • Ashiho Asosii Mao,
  • Avishek Bhattacharjee

摘要

Aquilaria malaccensis Lam. (Thymelaeaceae) is the most cultivated species as a source of agarwood in India. Agarwood is a resinous wood used in the perfume and incense industry. Simple Sequence Repeats (SSRs) based genetic diversity analysis was carried out in 195 accessions of A. malaccensis collected from all the major agarwood cultivating states in India. Sixty SSRs obtained from the published literature were used for screening. Fifteen markers were identified as polymorphic and used for genotyping. The frequency and genetic distance-based statistical analysis were performed along with population structure analysis. The study resulted in high average values of Observed Heterozygosity and Shannon Index indicating high genetic variability within most of the individuals. Overall low genetic differentiation and high gene flow was also observed. The analysis of molecular variance revealed that most of the genetic variance is partitioned within the population as compared to among population. The STRUCTURE analysis divided all the accessions into two genetic clusters irrespective of their geographical distribution with high admixture. The findings of the current study offer crucial genetic data on A. malaccensis to support management and crop improvement initiatives in India.