Variation in spring and autumn freezing resistance among and within Spanish wild populations of Castanea sativa

Raquel Díaz; Øystein Johnsen; Josefa Fernández-López

doi:doi:10.1051/forest/2009059

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Volume 66 / No 7 (October-November 2009)

Ann. For. Sci., 66 7 (2009) 708

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Table IV

Pearson’s correlation coefficients -based on individual values (above diagonal, N = 545) and on population Lsmeans (below diagonal, N = 6)- between the different field and frost damage traits. Only significant coefficients (p < 0.05) are shown.

	Field traits^a				Damage traits^b

	BB06		LF06		SD1		TB1		DBP1		SD2		TB2		DBP2
BB06			0.34	^***	0.51	^***	0.65	^***	0.61	^***
LF06	0.97	^**			0.17	^***	0.34	^***	0.27	^***	0.15	^***	0.17	^***	0.16	^***
SD1	0.98	^***	0.93	^**			0.51	^***	0.59	^***	0.14	^**
TB1	0.99	^***	0.96	^**	0.99	^***			0.69	^***	0.11	^*
DBP1	0.97	^**	0.91	^*	0.98	^***	0.99	^***			0.11	^*
SD2	0.92	^**	0.90	^*	0.95	^**	0.94	^**	0.93	^**			0.35	^***	0.54	^***
TB2			0.82	^*											0.60	^***
DBP2													0.93	^**

^a

BB06, Bud burst in spring 2006; LF06, Leaf fall in autumn 2006.

^b

SD1 and SD2: Spring and autumn stem damage, respectively; TB1 and TB2: Spring and autumn damage on terminal bud, respectively; DBP1 and DBP2: Spring and autumn damage on lateral buds (in percentage), respectively. Significance levels.

^***

P < 0.001 ;

^**

P < 0.01;

^*

* P < 0.05.