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New Zealand Journal of Forestry Science
Fig. 2 | New Zealand Journal of Forestry Science

Fig. 2

From: Spring and autumn phenology of hybrid aspen (Populus tremula L. × P. tremuloides Michx.) genotypes of different geographic origin in hemiboreal Estonia§

Fig. 2

Linear relationship between the ‘interval between spring and autumn phenological processes’ and current annual height increment (CAIH), where a the relationship with the interval that showed the strongest correlation during year 3, i.e. S3–A1, and b the relationship with the interval that showed the strongest correlation during year 6, i.e. S2–A1, are presented (p < 0.01**, p < 0.001***)

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