Table III.

Seed sizes and shoot-to-root ratios of five Arabidopsis accessions

Accessions	C24	Co	Cal	Col-0	Te
1,000 Seeds dry mass (mg)	17.3 ± 0.4 b	17.0 ± 0.4 b	18.2 ± 0.6 a	16.5 ± 0.4 c	16.7 ± 0.3 bc
Shoot/root at 0.5 g L−1 HA	1.66 ± 0.21 b	1.63 ± 0.16 b	2.59 ± 0.10 a	1.51 ± 0.11 c	1.54 ± 0.13 c
Shoot/root at 1 mm KH2PO4	3.12 ± 0.30 bc	3.44 ± 0.49 b	4.05 ± 0.31 a	2.70 ± 0.82 c	2.07 ± 0.55 c

One thousand dried seeds were sampled and weighed. Each value is the mean ± sd of three determinations. For each shoot-to-root ratio measurement, 25 seedlings were grown for 24 d in modified MS media (pH 7.0) containing sparingly soluble phosphate (0.5 g L⁻¹ HA) or soluble phosphate (1 mm KH₂PO₄) solidified with 0.15% (w/v) agarose. Data are means ± sd of three replicate measurements of 10 pooled shoots and roots. Significant differences within Arabidopsis accessions (P ≤ 0.05) are indicated by different characters.