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Strawberry Genotypes Differ in Their Ratio of Shoots to Roots, Based on Dry Weight.

Jamieson, A.R. and Kempler, C. (2009). "Strawberry Genotypes Differ in Their Ratio of Shoots to Roots, Based on Dry Weight.", Acta Horticulturae (ISHS), 842, pp. 589-592.

Abstract

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.

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