STRAWBERRY GENOTYPES DIFFER IN THEIR RATIO OF SHOOTS TO ROOTS, BASED ON DRY WEIGHT
Previous observations of strawberry roots of plants grown in peat-based medium in a screenhouse or grown in the field in soil indicated that genotypes differ in root length and volume. This experiment was designed to evaluate a large number of genotypes to better quantify this variability and to identify those genotypes with large root systems. Plant material consisted of 100 cold-stored dormant genotypes and 71 micropropagated genotypes. Plants were grown for 8 weeks in a greenhouse, then dry weights of shoots, roots and stolons were obtained. For the cold-stored plants, root dry weight ranged from 0.74 g for K99-5 to 2.18 g for Brunswick. The shoot-to-root ratio ranged from 2.51 for K03-2 to 5.43 for K99-36, with a mean of 3.51. For the micropropagated plants, root dry weight ranged from 0.26 g for BC4-41-67 to 2.14 g for WSU2464, with a mean of 1.01 g for 71 genotypes. The shoot to root ratio ranged from 2.01 for BC92-20-85 to 6.72 for BC4-9-5, with a mean of 4.44 for 70 genotypes. Genotypes identified in this study as having large root systems or small shoot:root ratios can be used to test whether these types are more tolerant of root pathogens or abiotic stresses.
Jamieson, A.R. and Kempler, C. (2009). STRAWBERRY GENOTYPES DIFFER IN THEIR RATIO OF SHOOTS TO ROOTS, BASED ON DRY WEIGHT. Acta Hortic. 842, 589-592
Fragaria ×ananassa, roots, dry weight