. 2010 Jun 30;61(13):3647–3662. doi: 10.1093/jxb/erq178

Table 2.

Chlorophyll content in mature leaves and young stems of Portulaca species and Sesuvium portulacastrum. Means are from 4–6 individual measurements ±SE. Lower case letters indicate significant differences between species in each column, at P <0.05.

Species	Chl a+b (μg mg FW⁻¹)		Chl a+b (μg mg DW⁻¹)		Chl a+b (μg cm⁻²)
	Leaf	Stem	Leaf	Stem	Leaf	Stem
P. amilis	0.51±0.04^bc	0.19±0.01^c	26.9±1.3^bc	5.6±0.1^ab	48.4±5.3^bc	29.9±3.0^bc
P. cf bicolor	0.45±0.04^b	0.48±0.03^d	17.1±1.9^a	8.5±1.4^b	50.3±1.6^bc	26.9±1.5^bc
P. cryptopetala	0.72±0.06^d	0.15±0.01^c	20.0±2.0^a	4.7±0.6^ab	61.2±4.0^c	30.5±3.9^c
P. grandiflora	0.31±0.01^a	0.07±0.005^a	36.8±5.2^c	5.0±1.5^ab	38.1±1.9^b	11.8±1.1^a
P. molokiniensis	0.21±0.02^a	ND	19.4±2.8^a	ND	18.0±1.6^a	ND
P. oleracea	0.73±0.04^d	0.17±0.03^c	19.9±2.1^a	3.0±0.3^a	35.6±2.6^b	19.0±3.4^ab
P. pilosa	0.41±0.02^ab	0.14±0.01^bc	22.6±2.1^ab	2.9±0.3^a	33.7±1.6^b	13.0±1.2^a
P. umbraticola	0.51±0.04^bc	0.08±0.01^a	18.4±1.2^a	2.3±0.1^a	35.0±2.4^b	14.8±2.9^a
Average for Portulaca species	0.52	0.18	23.1	4.6	43.2	20.8
S. portulacastrum	0.64±0.07^cd	0.09±0.01^ab	16.0±0.8^a	2.0±0.06^a	64.6±9.2^c	14.3±1.0^a