Fig. 1
From: A toolkit to rapidly modify root systems through single plant selection
Summary of root and shoot biomass data for the panel of 17 lines used for visual scoring to estimate root biomass non-destructively. This panel includes Borlaug100 and the three donors (SW107, SW309 and SW388) used to develop introgression lines with different root configurations, where a displays the 1–6 scale used for ‘visual assessment method’ of root biomass. The 1–6 scale: 1 = very fine root system with short root length and very few surface roots, 2 = fine root system, short root length and few surface roots, 3 = fine root system, short root length and some surface roots, 4 = intermediate root system, long root length and intermediate surface roots, 5 = strong root system, long root length and strong surface roots, and 6 = strong root system, long root length and strong surface roots with nodal roots clearly visible. b Shows the relationship between visual scores and root dry biomass, c Shows the relationship between root dry biomass and shoot dry biomass, and d presents boxplots for root:shoot ratio