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<p>A comprehensive study was carried out in an effort to evaluate the genetic diversity of the 96 exotic quinoa cultivars in the North-Western Himalayas, using three quality indices (amino acids, saponin and crude protein content) and 27 agro-morphological traits. In comparison to the check variety Himshakti, nine genotypes (EC-896091, EC-896099, EC-896102, EC-896111, EC-896114, EC-896202, EC-896206, EC-896218 and EC-896224, respectively) were significantly superior for seed yield and other yield traits. Molecular analysis using 96 SSR markers revealed 55 polymorphic markers, with an average of 2.3 alleles per primer. PIC values ranged from 0.041 to 0.680 with a mean value of 0.446. Six genetic clusters were formed using the neighbor-joining analysis. The Principal Coordinates Analysis (PCoA) divided the genotypes into five populations, explaining 44.11% of the variance. Genotype EC-896091 emerged as a superior line for crude protein and seed yield, while the EC-896202 and EC-896206 genotypes excelled in both amino acid content and seed yield. The genotype EC-896202 had a desired zero saponin content, making it a possible option for inclusion in breeding programme. These results demonstrated significant genetic variation among quinoa genotypes that are suitable for the Himalayan climate and may eventually increase both nutritional value and productivity. Furthermore, the present findings provide valuable information for initiating systematic breeding initiatives to enhance agronomic performance as a climate-resilient crop and help to develop region-specific varieties.</p>

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SSR-Based Assessment of Genetic Variation and Population Structure in Quinoa (Chenopodium quinoa)

  • 期刊论文

  • 发表日期：

    2026年5月8日

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  • Shruti Vij,
  • Manisha Gautam,
  • Rohit Sharma,
  • Sanjeev Kumar,
  • Rakesh Kumar Chahota

摘要

A comprehensive study was carried out in an effort to evaluate the genetic diversity of the 96 exotic quinoa cultivars in the North-Western Himalayas, using three quality indices (amino acids, saponin and crude protein content) and 27 agro-morphological traits. In comparison to the check variety Himshakti, nine genotypes (EC-896091, EC-896099, EC-896102, EC-896111, EC-896114, EC-896202, EC-896206, EC-896218 and EC-896224, respectively) were significantly superior for seed yield and other yield traits. Molecular analysis using 96 SSR markers revealed 55 polymorphic markers, with an average of 2.3 alleles per primer. PIC values ranged from 0.041 to 0.680 with a mean value of 0.446. Six genetic clusters were formed using the neighbor-joining analysis. The Principal Coordinates Analysis (PCoA) divided the genotypes into five populations, explaining 44.11% of the variance. Genotype EC-896091 emerged as a superior line for crude protein and seed yield, while the EC-896202 and EC-896206 genotypes excelled in both amino acid content and seed yield. The genotype EC-896202 had a desired zero saponin content, making it a possible option for inclusion in breeding programme. These results demonstrated significant genetic variation among quinoa genotypes that are suitable for the Himalayan climate and may eventually increase both nutritional value and productivity. Furthermore, the present findings provide valuable information for initiating systematic breeding initiatives to enhance agronomic performance as a climate-resilient crop and help to develop region-specific varieties.