10 research outputs found
Juvenile growth and frost damages of poplar clone OP42 in Latvia
ArticleShort rotation plantations in the northern Europe are commonly established using
poplar clone OP42 (Populus maximowiczii Henry × P. trichocarpa Torr. and Gray). We assessed
its growth and suitability to the climate in central part of Latvia at juvenile age. Trees that had
formed single stem were significantly higher (121 ± 2.5 cm), thicker (7.1 ± 0.48 mm) and had
longer branches (32 ± 1.5 cm) than trees that had formed multiple stems. In beginning of the
second growing season all trees had died stems and 19.6% of them formed new shoots from the
ground level. The sprouting trees had random spatial distribution in the field. Regardless of the
number of stems, the sprouting trees were significantly lower (110 ± 3.9 cm) than the dead trees
(119 ± 2.0 cm). During the repeated assessment about one month later, proportion of the
sprouting trees increased up to 44%, but the detected relations between measured traits of
sprouting and dead trees remained. Clone OP42 had serious frost induced damages also in autumn
phenology experiment (96% trees with severely damaged leaves). Our results suggest that frost
prone sites are not suitable for establishment of plantations of OP42 clone
Overexpression of Fc receptor-like 1 associated with B-cell activation during hepatitis B virus infection
HBV induces inhibitory FcRL receptor on B cells and dysregulates B cell-T follicular helper cell axis
Effects of interferon and ribavirin combination therapy on CD4+ proliferation, lymphocyte activation, and Th1 and Th2 cytokine profiles in chronic hepatitis C
Effects of rituximab dose on hepatitis B reactivation in patients with resolved infection undergoing immunologic incompatible kidney transplantation
The ectomycorrhizal community of conifer stands on peat soils 12 years after fertilization with wood ash
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