. 2020 Mar 9;10:4278. doi: 10.1038/s41598-020-61147-3

Table 4.

Phosphorus uptake (mg plant⁻¹) by various plant tissues (root, stem, young leaf tip, young leaf base, mature leaf tip, mature leaf base, and whole plant) in six rice cultivars at 20, 30, 40, and 50 days after transplanting (DAT).

Cultivars	200 µM Pi				0 µM Pi
Cultivars	20 DAT	30 DAT	40 DAT	50 DAT	30 DAT	40 DAT	50 DAT
Root (mg plant⁻¹)
Basmati-2000	0.76 ± 0.12^b	1.68 ± 0.16^c	0.96 ± 0.14^d	4.72 ± 0.15^d	1.11 ± 0.25^a	1.27 ± 0.23^a	1.45 ± 0.11^a
Super Basmati	0.29 ± 0.10^de	1.57 ± 0.06^c	1.97 ± 0.21^c	2.79 ± 0.16^e	0.30 ± 0.06^c	0.31 ± 0.11^c	0.42 ± 0.09^c
PS-2	1.17 ± 0.34^a	2.29 ± 0.05^b	4.21 ± 0.44^a	7.41 ± 0.64^a	1.16 ± 0.10^a	1.40 ± 0.33^a	1.58 ± 0.48^a
KSK-434	0.60 ± 0.15^c	2.89 ± 0.14^a	4.05 ± 0.13^a	5.25 ± 0.19^c	0.61 ± 0.06^b	0.95 ± 0.08^b	1.01 ± 0.02^b
KS-282	0.41 ± 0.26^d	1.19 ± 0.15^d	2.77 ± 0.31^b	5.92 ± 0.18^b	0.34 ± 0.11^c	0.37 ± 0.12^c	0.37 ± 0.09^c
IR-6	0.24 ± 0.04^e	0.59 ± 0.05^e	1.89 ± 0.11^c	1.48 ± 0.12 ^f	0.29 ± 0.10^c	0.31 ± 0.02^c	0.32 ± 0.04^c
LSD_0.05	0.15	0.22	0.52	0.53	0.16	0.13	0.36
Stem (mg plant⁻¹)
Basmati-2000	0.74 ± 0.11^b	2.28 ± 0.73^d	3.02 ± 0.52^c	8.52 ± 0.69^d	0.75 ± 0.28^b	0.76 ± 0.13^a	0.60 ± 0.12^a
Super Basmati	0.32 ± 0.07^c	2.60 ± 0.96^d	3.60 ± 0.29^bc	6.01 ± 0.64^e	0.29 ± 0.05^d	0.27 ± 0.08^d	0.20 ± 0.04^c
PS-2	1.33 ± 0.28^a	5.66 ± 1.02^c	7.54 ± 0.95^a	13.32 ± 0.64^a	1.24 ± 0.14^a	0.54 ± 0.01^b	0.42 ± 0.05^b
KSK-434	0.92 ± 0.18^b	9.15 ± 2.70^a	6.75 ± 0.91^a	10.37 ± 0.18^c	0.83 ± 0.05^b	0.39 ± 0.03^c	0.24 ± 0.05^c
KS-282	0.79 ± 0.14^b	3.31 ± 0.37^bc	6.82 ± 0.94^a	11.77 ± 1.57^b	0.57 ± 0.22^c	0.39 ± 0.05^c	0.37 ± 0.10^b
IR-6	0.33 ± 0.10^c	3.37 ± 0.97^b	4.65 ± 0.85^b	9.46 ± 0.34 ^cd	0.24 ± 0.03^d	0.20 ± 0.03^d	0.14 ± 0.03^c
LSD_0.05	0.27	0.73	1.24	1.38	0.15	0.07	0.13
Young leaf tip (mg plant⁻¹)
Basmati-2000	0.50 ± 0.06^a	0.57 ± 0.02^c	3.74 ± 0.09^bc	1.74 ± 0.43^b	0.33 ± 0.10^a	0.39 ± 0.04^c	0.55 ± 0.06^c
Super Basmati	0.13 ± 0.05 ^cd	0.52 ± 0.33^c	3.51 ± 0.06^c	1.75 ± 0.23^b	0.19 ± 0.06^b	0.25 ± 0.02^d	0.35 ± 0.06^d
PS-2	0.27 ± 0.09^b	0.77 ± 0.07^b	4.42 ± 0.45^ab	3.83 ± 0.57^a	0.34 ± 0.07^a	0.69 ± 0.11^a	0.87 ± 0.12^a
KSK-434	0.21 ± 0.03^bc	1.18 ± 0.32^a	4.57 ± 0.44^a	3.92 ± 0.75^a	0.23 ± 0.08^b	0.44 ± 0.03^bc	0.68 ± 0.09^b
KS-282	0.09 ± 0.04^d	0.71 ± 0.23^b	4.58 ± 0.40^a	4.30 ± 1.82^a	0.25 ± 0.01^b	0.53 ± 0.16^b	0.77 ± 0.06^ab
IR-6	0.07 ± 0.03^d	0.65 ± 0.17^bc	3.13 ± 0.34^c	1.89 ± 0.32^b	0.11 ± 0.05^c	0.21 ± 0.03^d	0.30 ± 0.02^d
LSD_0.05	0.10	0.14	0.73	0.66	0.06	0.11	0.13
Young leaf base (mg plant⁻¹)
Basmati-2000	0.43 ± 0.06^a	0.89 ± 0.14 ^cd	4.51 ± 0.70^a	2.22 ± 0.21^b	0.72 ± 0.20^a	0.74 ± 0.14^a	0.83 ± 0.11^a
Super Basmati	0.28 ± 0.05^bc	1.14 ± 0.47^bc	4.40 ± 0.61^a	2.72 ± 0.16^ab	0.21 ± 0.08^d	0.33 ± 0.02^d	0.25 ± 0.01^c
PS-2	0.42 ± 0.10^a	0.83 ± 0.12^d	4.13 ± 0.13^ab	3.50 ± 0.65^a	0.36 ± 0.06^bc	0.55 ± 0.05^b	0.43 ± 0.07^b
KSK-434	0.37 ± 0.04^ab	2.30 ± 0.56^a	4.24 ± 0.57^a	2.36 ± 0.22^ab	0.42 ± 0.06^b	0.51 ± 0.07^b	0.44 ± 0.06^b
KS-282	0.19 ± 0.05^c	0.95 ± 0.28 ^cd	3.17 ± 0.36^b	2.20 ± 0.57^b	0.28 ± 0.07 ^cd	0.47 ± 0.07^bc	0.35 ± 0.06^bc
IR-6	0.18 ± 0.04^c	1.34 ± 0.34^b	3.82 ± 0.17^ab	2.63 ± 0.21^ab	0.31 ± 0.11 ^cd	0.39 ± 0.09 ^cd	0.30 ± 0.10^bc
LSD_0.05	0.12	0.26	1.04	1.19	0.10	0.11	0.16
Mature leaf tip (mg plant⁻¹)
Basmati-2000	0.93 ± 0.15^a	0.51 ± 0.03^e	0.44 ± 0.08^d	1.39 ± 0.12^b	0.48 ± 0.05^a	0.47 ± 0.06^a	0.35 ± 0.02^b
Super Basmati	0.16 ± 0.03^d	1.02 ± 0.41^b	0.78 ± 0.19^c	1.86 ± 0.12^ab	0.18 ± 0.04^c	0.14 ± 0.01^d	0.17 ± 0.03^d
PS-2	0.44 ± 0.11^b	0.69 ± 0.19 ^cd	1.19 ± 0.08^b	2.09 ± 0.45^a	0.55 ± 0.12^a	0.41 ± 0.11^b	0.51 ± 0.07^a
KSK-434	0.36 ± 0.07^bc	1.47 ± 0.13^a	1.60 ± 0.26^a	2.09 ± 0.25^a	0.48 ± 0.04^a	0.37 ± 0.05^b	0.33 ± 0.03^bc
KS-282	0.31 ± 0.08^bcd	0.61 ± 0.09^de	1.32 ± 0.22^b	1.95 ± 0.40^ab	0.35 ± 0.09^b	0.23 ± 0.04^c	0.24 ± 0.02 ^cd
IR-6	0.26 ± 0.05 ^cd	0.76 ± 0.19^c	0.89 ± 0.28^c	1.48 ± 0.29^b	0.27 ± 0.13^bc	0.16 ± 0.03^d	0.22 ± 0.08 ^cd
LSD_0.05	0.16	0.13	0.28	0.41	0.13	0.05	0.11
Mature leaf base (mg plant⁻¹)
Basmati-2000	0.55 ± 0.04^a	0.75 ± 0.11 ^cd	0.58 ± 0.17^d	1.19 ± 0.13^d	0.58 ± 0.14^a	0.36 ± 0.04^b	0.28 ± 0.02^a
Super Basmati	0.20 ± 0.08^d	1.24 ± 0.43^b	1.10 ± 0.45^c	2.29 ± 0.10^abc	0.23 ± 0.02^c	0.15 ± 0.04^de	0.07 ± 0.01^c
PS-2	0.44 ± 0.14^b	0.99 ± 0.11^bc	1.71 ± 0.12^b	2.76 ± 0.21^ab	0.42 ± 0.04^b	0.50 ± 0.06^a	0.30 ± 0.04^a
KSK-434	0.36 ± 0.08^bc	2.20 ± 0.69^a	2.30 ± 0.13^a	2.86 ± 0.40^a	0.29 ± 0.07^c	0.23 ± 0.02^c	0.18 ± 0.03^b
KS-282	0.35 ± 0.05^bc	0.66 ± 0.09^d	1.57 ± 0.40^b	2.06 ± 0.39^bc	0.39 ± 0.08^b	0.21 ± 0.01 ^cd	0.12 ± 0.02^bc
IR-6	0.24 ± 0.05 ^cd	1.00 ± 0.24^bc	1.01 ± 0.24^c	1.59 ± 0.08 ^cd	0.13 ± 0.02^d	0.09 ± 0.02^e	0.08 ± 0.02^c
LSD_0.05	0.14	0.29	0.39	0.79	0.08	0.07	0.08
Whole plant (mg plant⁻¹)
Basmati-2000	3.96 ± 0.14^a	6.69 ± 0.81^c	13.25 ± 0.51^d	19.77 ± 1.09^c	3.97 ± 0.24^a	3.99 ± 0.64^a	4.01 ± 0.40^a
Super Basmati	1.38 ± 0.28^d	8.08 ± 0.72^c	15.36 ± 2.47^c	17.43 ± 0.91^c	1.40 ± 0.09^d	1.44 ± 0.08^d	1.46 ± 0.09^c
PS-2	4.07 ± 0.42^a	11.23 ± 0.61^b	23.20 ± 0.64^a	32.92 ± 1.18^a	4.08 ± 0.17^a	4.10 ± 0.23^a	4.11 ± 0.56^a
KSK-434	2.83 ± 0.32^b	19.19 ± 0.97^a	23.52 ± 1.96^a	26.84 ± 1.46^b	2.86 ± 0.11^b	2.87 ± 0.14^b	2.88 ± 0.09^b
KS-282	2.15 ± 0.28^c	7.44 ± 0.44^c	20.23 ± 1.90^b	28.19 ± 3.26^b	2.18 ± 0.40^c	2.19 ± 0.12^c	2.21 ± 0.25^bc
IR-6	1.32 ± 0.21^d	7.71 ± 0.24^c	15.40 ± 2.38^c	18.54 ± 1.06^c	1.34 ± 0.16^d	1.35 ± 0.07^d	1.36 ± 0.13^c
LSD_0.05	0.46	1.63	1.89	3.23	0.48	0.41	0.95

Initially, plants were grown for 20 days with adequate P (200 µM Pi). At 20 DAT, three replications of each cultivar were harvested, and the remaining plants were divided into two groups receiving adequate P or no P and harvested at 30, 40, and 50 DAT. Data are shown as means ± standard error (mean ± SE, n = 3). Means sharing identical letter(s) in the same column indicate non-significant differences among cultivars at each harvest (LSD test, P ≤ 0.05).