Skip to main content

View full-text article in PMC

. 2005 Mar 4;95(6):991–998. doi: 10.1093/aob/mci104

Table 4.

Initial values and net increments in K⁺ contents of component organs and of whole tobacco plants under different treatments over a 10 d study period

		Net K⁺ increment (mmol organ⁻¹)
		Low concentration					High concentration
Position	Initial values (mmol organ⁻¹)			NH₄NO₃			NH₄NO₃
Top+new leaves		0·52^c	1·37^b	1·08^bc	0·46^c	3·05^a	3·37^a
Upper leaves	0·49 ± 0·07	0·68^c	1·56^b	1·65^b	0·81^c	2·29^a	2·45^a
Middle leaves	0·53 ± 0·06	0·52^c	0·88^b	0·96^b	0·60^c	1·01^b	1·36^a
Lower leaves	0·39 ± 0·12	0·25^d	0·41^bc	0·49^ab	0·33^cd	0·50^ab	0·58^a
Stem	0·37 ± 0·06	0·18^d	0·68^b	0·49^bc	0·25^cd	1·02^a	1·14^a
Roots	0·17 ± 0·06	0·15^b	0·88^a	1·00^a	0·11^b	0·92^a	1·06^a
Whole plant	1·96 ± 0·21	2·30^d	5·78^c	5·67^c	2·56^d	8·81^b	9·97^a

Values in rows followed by the same letter are not significantly different (P > 0·05).