Results 141 to 150 of about 4,386 (186)

?????????????????? ?????????????????????? ???????????????????????? ???????? Quercus robur (Fagaceae) ???? ???????????? ?????????????? ???????????????????????? ???????????????? ?????????? ??-???????????????? ???? ?????????????????????????????? ??????????????

2021
?????????????????????? ???????????? ?? ?????????????? ???????????????????????????? ?????????? Quercus robur (Fagaceae) ?? ?????????????? ???????????????????????????????? ???????????????? ?? ??????-?????????????????? ??????????????, ???????????????????? ???? ???????????????? ???????????????????????? ???????????????? ?????????? ??-???????????????? (??????
openaire   +3 more sources

Investigation of kernel oils of Quercus robur and Quercus cerris

Chemistry of Natural Compounds, 2004
The kernel oils of Quercus robur and Quercus cerris were obtained by Soxhlet extraction using petroleum ether. Oil yields were found to be 5.2–5.6% and 4.3–4.8% for Q. robur and Q. cerris kernel, respectively (expressed in g per 100 g of dried plant material).
Petrović, Silvana, Šobajić, Slađana, Rakić, S, Tomić, A, Kukić, Jelena   +4 more
openaire   +4 more sources

Comparison Between Quercus Robur/Alnus Cordata Mixed Plantation and Quercus Robur in Monoculture

1991
Actinorhizal and leguminous plants, due to their capacity to fix nitrogen in symbiosis with bacteria, often act as pioneer in the colonization of eroded and spoilt soils. In temperate regions, actinorhizal shrubs and trees also have a great potential as intercrops for other tree species.
E. Buresti, A. M. Domenach, M. Bosco, A. Moiroud   +3 more
openaire   +1 more source

Microspore development in Quercus robur (Fagaceae)

Review of Palaeobotany and Palynology, 2004
Abstract Tetrad and free microspore stages of Quercus robur L. were studied in thin sections for transmission electron microscopy, and mature pollen grains were observed with scanning electron microscopy before and following permanganate treatment.
John R. Rowley, Nina I. Gabarayeva
openaire   +1 more source

Roburin A, A dimeric ellagitannin from heartwood of Quercus robur

Phytochemistry, 1991
Abstract Three ellagitannins from Quercus robur wood have been studied by high resolution 1H and 13C NMR. Two are the epimeric 1,2,3,5-nonahydroxytriphenoyl-4,6-hexahydroxydiphenoyl-glucoses, castalagin and vescalagin. The third is a dimeric compound, roburin A, composed of two vescalagin subunits probably linked through an ether bond between the ...
Herve Du Penhoat, C., Michon, V., Ohassan, A., Peng, Shuang, Scalbert, Augustin, Gage, D.   +5 more
openaire   +2 more sources

Minor triterpene components from Quercus robur galls

Phytochemistry, 1973
Isolation and structural determination of dammarenolic acid, dammarenediol and dipterocarpol from from resinous exudate covering galls produced by insect cynips mayri.
MONACO, Pietro, Caputo R., G. Palumbo, L. Mangoni   +3 more
openaire   +3 more sources

Quercus robur L. (Pedunculate Oak)

1996
The genus Quercus consists of about 450 species distributed throughout North temperate regions, the Mediterranean basin, and some montane tropics and subtropics. Although recent phylogenetic studies have provided the basis for an infrageneric classification of the genus, the species distribution in the Quercus complex is still a matter of debate (Nixon
J. A. Manzanera, M. A. Bueno, J. A. Pardos   +2 more
openaire   +1 more source

Decline symptoms on roots of Quercus robur

European Journal of Forest Pathology, 1994
AbstractA comparative study by light and scanning‐electron microscopy of fine and coarse roots from healthy and declining oaks demonstrated a progressive deterioration of fine roots and mycorrhizal systems on mature trees in decline. Histopathological events such as infection of cortical and vascular root tissues by parasitic fungal hyphae leading to ...
openaire   +1 more source

?????????????????? ?????????????? ???? ???????????????? ???????????????????????????? ???????????????????? ???????? ???????????????????? (Quercus robur L.) ???? ???????????????????????????? ???????????????? ?????????????? ???????????????????????????? ????????????????

2011
???? ???????????? ?????????????? ???????????????????????????????????? ???????????????????????? ?????????????? ???????????????????????????? ???????????????? ???????? ???????????????????? ???? ???????????????????????????? ?????????????????????? ???????????????? ???????????? ???????????????????? ???? ?????????????????????????????? ??????????. ?????????????
openaire   +1 more source

Mycoflora of declining Quercus robur

1992
Lo studio riporta i maggiori funghi fitopatogeni associati alla specie quercina Quercus ...
Dellavalle Fedi I., RAGAZZI, ALESSANDRO, MORICCA, SALVATORE   +2 more
openaire   +1 more source