TABLE 4.

Correlation between D and other traits of different lettuce varieties.

Traits	Correlation coefficient
	Salanova	Lugano	Satine	Aphylion	All
FW	0.83	0.98	0.81	0.91	0.80
DW	0.84	0.80	0.84	0.91	0.81
H	0.85	0.85	0.82	0.88	0.78
LA	0.83	0.89	0.84	0.90	0.86