Environmental regulation of growth and dormancy of four Sorbus genotypes was studied in controlled environments. Emphasis was placed on assessment of the presence and nature of the deficient photoperiodic dormancy regulation system that has previously been reported for some woody Rosaceae species. Two genotypes of Sorbus aucuparia L. maintained indeterminate growth for 8 weeks and 9 weeks at te...

aucuparia is an important slow growth forest tree with medicinal, industrial and ornamental uses which is applied for reforestation in high altitude of mountain lands. this species has been endangered at northern forests of iran; therefore micropropagation of adult trees by bud culture may help to reforestation. the best sterilizing treatment was the buds washing with hgcl2% 0.1 solution for 7 ...

Ecological Relationships of Slope and Elevation with Rowan (Sorbus aucuparia L.) in Arasbaran Forests

Sorbus cambrensis, WELSH WHITEBEAM, is described and illustrated. It a member of subgenus Aria unusual in being pentaploid. endemic to six sites the eastern Brecon Beacons, Wales, ‘Endangered.’ was first noted as ‘large-leaved S. porrigentiformis’ 1970s 2009. closely related another pentaploid, stenophylla, both which may be derived from hybridisation between rupicola unknown members Aria.

Sorbus torminalis (WILD SERVICE TREE) is described and illustrated. It a species relatively isolated from its relatives, but role as parental taxon of hybridogenic noted. Notes on usage, cultivation propagation are included.

Oliver, S. J.; Goldschmidt, P.; Franceschini, A.; Serjeant, S. B. G.; Efstathiou, A.; Verma, A.; Gruppioni, C.; Eaton, N.; Mann, R. G.; Mobasher, B.; Pearson, C. P.; Rowan-Robinson, M.; Sumner, T. J.; Danese, L.; Elbaz, D.; Egami, E.; Kontizas, M.; Lawrence, A.; McMahon, R.; Norgaard-Nielsen, H. U.; Perez-Fournon, I. and Gonzalez-Serrano, J. I. (1997). Observations of the Hubble Deep Field with...

Plant-microbial interactive relations with respect to determine mycoflora of the Sorbus domestica L.--fruits, crust, leaves and pollen were studied in 2 Slovak regions. On the fruit samples the genera Alternaria, Botrytis, Cladosporium, Mucor and Penicillium occurred, on the leaves the genera Alternaria, Cladosporium and Penicillium prevailed and on crust the genera Alternaria, Cladosporium, Pe...

Michael Balls, Alan M. Goldberg, Julia H. Fentem, Caren L. Broadhead, Rex L. Burch, Michael F.W. Festing. John M. Frazier, Coenraad F.M. Hendriksen, Margaret Jennings, Margot D.O. van der Kamp, David B. Morton, Andrew N. Rowan, Claire Russell, William M.S. Russell, Horst Spielmann, Martin L. Stephens, William S. Stokes, Donald W. Straughan, James D. Yager, 18 Joanne Zurlo and Bert F.M. van Zutphen