SCIENTISTS at Aberystwyth University have discovered specific traits in Miscanthus that could help lock more carbon into the soil, helping to tackle soil fatique associated with potato growing.
By analysing the chemical makeup of the plant’s leaves, roots and underground stems, the Aberystwyth University scientists identified traits linked to soil carbon storage.
The study examined 11 Miscanthus varieties and found that rhizomes – the crop’s woody underground stems – move carbon deeper into the soil, where it can remain stable. Roots with lower levels of a natural plant chemical, lignin, store more carbon near the soil surface.
The findings suggest that the most effective Miscanthus varieties are those with large underground growth and roots with lower lignin levels.
Dr Paul Robson, from the Institute of Biological, Environmental and Rural Sciences at Aberystwyth University, who led the study, said:
“Varieties store carbon differently, and understanding these relationships helps guide breeding strategies that deliver climate and agricultural benefits together.”
Dr Amanda Holder, Postdoctoral Research Associate at Aberystwyth University, said the breeding programmes for Miscanthus are still at an early stage but the results are already looking promising.
“These results provide practical guidance on which traits are most likely to support soil carbon storage, helping ensure that future varieties deliver climate benefits alongside high yields. The study shows that it’s possible to enhance soil carbon storage without compromising productivity.”
