Table 1.
Treatment | Root d. wt (mg plant−1) | Stem d. wt (mg plant−1) | Leaf d. wt (mg plant−1) | Root/shoot ratio |
---|---|---|---|---|
CK | 1·701 ± 0·071b | 0·729 ± 0·062b | 0·781 ± 0·011a | 0·284 ± 0·024b |
−K | 1·120 ± 0·090c | 0·546 ± 0·023d | 0·489 ± 0·014c | 0·195 ± 0·020d |
−K + Na2SiO3 | 2·460 ± 0·068a | 0·894 ± 0·011a | 0·717 ± 0·016a | 0·318 ± 0·010a |
−K + NaCl | 1·723 ± 0·072b | 0·629 ± 0·013c | 0·633 ± 0·040b | 0·245 ± 0·019c |
Data are the mean ± s.e. of four replicates with each replicate containing at least three seedlings. Soybean seedlings were grown in medium watered with full nutrient solution (5 mm K) (CK) and K-deficient solution (1 mm) (−K) in the absence and presence of 2 mm Na2SiO3 (−K + Na2SiO3) and 4 mm NaCl (−K + Na2SiO3) for 60 d. Values with different letters within each column are significantly different at P < 0·05.