. 2014 Feb 11;9(2):e88930. doi: 10.1371/journal.pone.0088930

Table 2. Spectral indices distribution along the control (C) and water deficit (WD) canopies at day 29.

			Spectral indices
	Node	% foliage	NDVI	WI	NDII	MSI	SIPI
C	4	27.3±4.0	0.651±0.034^A	1.043±0.009^A	0.213±0.034^A	0.621±0.063^A	1.013±0.010^A
	8	41.5±4.9	0.738±0.016^B	1.026±0.002^B	0.131±0.017^B	0.733±0.015^B	1.007±0.007^A
	12	54.7±4.6	0.789±0.012^C	1.016±0.002^C	0.114±0.007^B	0.768±0.023^B	1.004±0.004^A
	16	65.7±3.5	0.797±0.016^D	1.014±0.001^C	0.113±0.006^B	0.769±0.015^B	1.000±0.005^A
	20	74.5±2.7	0.799±0.011^D	1.015±0.001^C	0.113±0.005^B	0.759±0.013^B	1.004±0.006^A
	24	83.1±2.3	0.801±0.012^D	1.015±0.002^C	0.114±0.004^B	0.761±0.012^B	1.005±0.004^A
	28	92.6±1.6	0.800±0.009^D	1.015±0.001^C	0.114±0.003^B	0.760±0.015^B	0.999±0.004^A
	32	97.5±1.5	0.798±0.009^D	1.016±0.002^C	0.113±0.004^B	0.772±0.023^B	1.003±0.004^A
	36		0.801±0.008^D	1.014±0.002^C	0.114±0.007^B	0.774±0.023^B	1.002±0.003^A
WD	4	31.8±2.3	0.752±0.012^A	1.015±0.004^A	0.113±0.003^A	0.748±0.030^A	1.005±0.006^A
	8	43.8±1.8	0.778±0.007^B	1.012±0.002^A	0.110±0.003^A	0.770±0.010^A	1.000±0.005^A
	12	56.7±1.7	0.780±0.011^B	1.010±0.001^A	0.109±0.002^A	0.766±0.012^A	0.993±0.004^A
	16	70.8±1.9	0.783±0.008^B	1.012±0.003^A	0.108±0.004^A	0.767±0.008^A	0.993±0.006^A
	20	84.1±1.9	0.781±0.009^B	1.011±0.002^A	0.111±0.004^A	0.772±0.013^A	0.995±0.003^A
	24		0.780±0.009^B	1.011±0.003^A	0.109±0.003^A	0.780±0.017^A	0.994±0.004^A

% foliage represents the cumulative foliage area measured by each nodal position, and includes also leaves of appropriate size from lateral shoots. Bolded values represent the uppermost node in the canopy from which all lower nodes exhibit similar values. Data represents means ± standard deviations (n = 10). Upper-case letters indicate significance of differences within each treatment.