Enhancement of Artemisinin Content through Four Cycles of Recurrent Selection with Relation to Heritability, Correlation and Molecular Marker in Artemisia annua L.

Abstract

Due to the high demand and low yield of the anti-malarial drug artemisinin in natural populations of Artemisia annua (Quinghao), an attempt has been made to enhance the artemisinin content through 4 cycles of recurrent selection (C₀-C₃) using selected genotypic and phenotypic traits. Based on their phenotypic and genotypic characteristics, the top 5 % plants of each cycle were selected, and their seedlings were planted in poly-cross block to produce seeds for the subsequent generation. A significant increase in the artemisinin content (0.15 % in C₀ to 1.16 % in C₃, i.e., about 40 % genetic gain over the generation) was observed. This enhancement was directly correlated with the plant height and branching intensity in all four cycles. Similarly, the PCV (phenotypic coefficient of variation) and GCV (genotypic coefficient of variation) have been observed to have a higher value for artemisinin content. The DNA marker (MAP 12) with relation to artemisinin was also identified for high yielding genotypes in all four cycles of selection. Over the four cycles of recurrent selection, the plant developed an oval appearance (Variety: CIM-Arogya) and a high artemisinin content (1.16 %).

Key words

Artemisia annua - Asteraceae - artemisinin - recurrent selection - correlation - molecular marker

References

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