Selection for aluminum and acid-soil resistance in white clover.(Crop Breeding, Genetics &...

Despite good resistance to acid-soil stresses, white clover (Trifolium repens L.) is not found on some acid soils. Our objectives were to develop a large-leafed white clover with acid-soil resistance, to relate seedling Al to mature plant acid-soil resistance, and to validate our soil-on-agar procedure. We used a two-stage selection procedure. In Stage 1 we used the soil-on-agar technique to select for seedling Al-resistance and Al-susceptibility in Brown Loam Synthetic No. 2 and 'Grasslands Huia' white clover. In Stage 2 we used conventional pot studies with two soil pH treatments, 4.2 a