. 2016 Aug 25;7:1276. doi: 10.3389/fpls.2016.01276

Table 4.

Pearson's correlation coefficients (r) describing association of nine phenotypic traits and proline content of 96 wheat genotypes evaluated under two greenhouse and two field experiments of stressed (lower diagonal) and optimal (upper diagonal) conditions.

Optimum conditions
		DTH	DTM	TN	PH	SL	SPS	KPS	TSW	GY	PC
Stressed conditions	DTH	1	0.776^**	0.178 ns	0.689^**	0.648^**	0.749^**	0.491^**	0.269^**	0.498^**	0.178 ns
	DTM	0.723^**	1	0.092 ns	0.472^**	0.473^**	0.581^**	0.365^**	0.216^*	0.349^**	0.126 ns
	TN	−0.299^**	−0.135 ns	1	0.251^*	0.047 ns	0.059 ns	0.033 ns	0.04	0.653^**	0.199 ns
	PH	0.557^**	0.191 ns	−0.106	1	0.687^**	0.611^**	0.461^**	0.473^**	0.634^**	0.161 ns
	SL	0.630^**	0.300^**	−0.370^**	0.619^**	1	0.727^**	0.603^**	0.292^**	0.510^**	0.069 ns
	SPS	0.709^**	0.386^**	−0.394^**	0.618^**	0.725^**	1	0.773^**	0.141 ns	0.547^**	0.122 ns
	KPS	0.297^**	0.034 ns	−0.238^*	0.500^**	0.530^**	0.668^**	1	−0.104	0.593^**	0.081 ns
	TSW	0.308^**	0.398^**	−0.062	0.254^*	0.215^*	0.136 ns	−0.209^*	1	0.414^**	0.078 ns
	GY	0.141 ns	0.115 ns	0.543^**	0.443^**	0.244^*	0.270^**	0.466^**	0.336^**	1	0.197 ns
	PC	0.002 ns	−0.043 ns	0.118 ns	0.030 ns	0.170 ns	0.057 ns	0.138 ns	−0.218^*	0.080 ns	1

DTH, days to 50% heading; DTM, days to maturity; GY, grain yield per plot; KPS, number of kennels per plant; PC, proline content; PH, plant height; TN, number of productive tillers; SL, spike length; SPS, number of spikelets per spike; TSW, thousand seed weight;

P < 0.05 (2-tailed);

^**

P < 0.01 level (2-tailed);

ns, non-significant.