Agronomic Evaluation and Genetic Variation of Tunisian Tall Fescue (Festuca arundinacea Schreb.)

Table 4

Correlations between agronomic characters and pedoclimatic factors of tall fescue.

	AL	AD	SI	ST	RF	PH	TM	mT
PL	−0.181	+0.038	−0.130	−0.059	−0.007	−0.035	−0.273	+0.340*
PW	+0.178	−0.032	+0.261	−0.131	0.113	−0.292	−0.211	+0.138
SN	+0.235	−0.051	+0.156	−0.359*	+0.129	−0.330*	+0.012	−0.041
PS	−0.136	−0.037	−0.070	−0.250	+0.004	−0.207	−0.278	+0.309*
TP	+0.146	−0.012	+0.084	−0.030	−0.015	−0.242	−0.164	+0.106
SW	−0.007	+0.229	+0.007	−0.069	+0.097	−0.249	−0.028	+0.093
PH	−0.394**	−0.241	−0.310*	−0.161	−0.131	+0.026	−0.079	+0.225
MY	−0.130	−0.185	+0.059	−0.223	−0.061	−0.090	+0.053	+0.051
SY	−0.287	+0.222	+0.221	−0.053	+0.306	+0.008	+0.009	−0.077

*Significant at the  .05 probability level. ** Significant at the  .01 probability level.
Agronomic traits: PL: panicle length (cm), SW: hundred-seed weight (g), PW: panicle weight (g), SN: spikelet number per panicle, PS: panicle weight without seeds (g), TP: ten-panicle weight (g), PH: plant height at harvest (cm), SY: seed yield (T/ha), MY: dry matter yield (T/ ha).
eco-edaphic factors: AL: altitude (m), RF: rainfall (mm), SI: slope incline (%), AD: anthropogenic disturbances, pH: pH, ST: soil texture (%), mT: minimum temperature (°C), MT: maximum temperature (°C).