Amur corktree (phellodendron amurense Rupr.)is one of the important accompanyingspeeies of Korean pine(Pinus Koraiensis Sieb et Zucc)broadleaved forest in northeast China.Thispaper reports on the seed dispersal,dorman...Amur corktree (phellodendron amurense Rupr.)is one of the important accompanyingspeeies of Korean pine(Pinus Koraiensis Sieb et Zucc)broadleaved forest in northeast China.Thispaper reports on the seed dispersal,dormancy,seed bank and regeneration of amur corktree.Seeds ofamur corktree are dispersed mainly by the aid of birds and gravity.The aril of the seeds many increaseseed longevity.In natural secondary forests,the stone of the seed bank may reach 750.000 seeds perheetare Regeneration was correlated with disturbance.and was best under intensive disturbance.展开更多
This paper deals with the relationships between forest harvesting and forest ccology.Itproposes basing annual cuts and forest operation plans on ecological principles.Harvestable forest re-sources are decreasing and r...This paper deals with the relationships between forest harvesting and forest ccology.Itproposes basing annual cuts and forest operation plans on ecological principles.Harvestable forest re-sources are decreasing and regeneration is slow.The combination of forest harvesting with ccologycan be viewed as a solution to the forest harvesting dilemma in China.This paper also makes sometechnical recommendations for forest operations based on ecological principles.展开更多
Korean spruce(Picea koraiensis Nakai)has been included as a Chinese regenerationspecies since the 1960’s.In the 1970’s it became one of the four most important species in thenortheast forest region of China. Korean ...Korean spruce(Picea koraiensis Nakai)has been included as a Chinese regenerationspecies since the 1960’s.In the 1970’s it became one of the four most important species in thenortheast forest region of China. Korean spruce is a timber species with a wide range of adaptation,high survival rate,and few diseases or pests.Studies of 30—year trials show that the regeneration ofkorean spruce is successful and has a prospective future.展开更多
A method for the production of somatic embryos and subsequent plant regeneration for Fritillaria ussuriensis M. is described. Whole leaflet cxplants, derived from plantlets grown in vitro, formed light yellowish embry...A method for the production of somatic embryos and subsequent plant regeneration for Fritillaria ussuriensis M. is described. Whole leaflet cxplants, derived from plantlets grown in vitro, formed light yellowish embryogenic calli within one month of culture in the dark. Somatic embryogenesis was obtained after a 28 d incubation on MS induction medium supplemented with 2 mg / L 2,4-D 0.5 mg / L BA, 0.5 mg / L KT and 500 mg / L CH followed by transfer to a second N medium containing 0.5 mg / L KT and 100 mg / L CH. Somatic embryos were transferred to MS medium with 0.1mg/ L NAA and placed in the light for regeneration. After two weeks, mature somatic embryo developed into whole plantlet.展开更多
文摘Amur corktree (phellodendron amurense Rupr.)is one of the important accompanyingspeeies of Korean pine(Pinus Koraiensis Sieb et Zucc)broadleaved forest in northeast China.Thispaper reports on the seed dispersal,dormancy,seed bank and regeneration of amur corktree.Seeds ofamur corktree are dispersed mainly by the aid of birds and gravity.The aril of the seeds many increaseseed longevity.In natural secondary forests,the stone of the seed bank may reach 750.000 seeds perheetare Regeneration was correlated with disturbance.and was best under intensive disturbance.
文摘This paper deals with the relationships between forest harvesting and forest ccology.Itproposes basing annual cuts and forest operation plans on ecological principles.Harvestable forest re-sources are decreasing and regeneration is slow.The combination of forest harvesting with ccologycan be viewed as a solution to the forest harvesting dilemma in China.This paper also makes sometechnical recommendations for forest operations based on ecological principles.
文摘Korean spruce(Picea koraiensis Nakai)has been included as a Chinese regenerationspecies since the 1960’s.In the 1970’s it became one of the four most important species in thenortheast forest region of China. Korean spruce is a timber species with a wide range of adaptation,high survival rate,and few diseases or pests.Studies of 30—year trials show that the regeneration ofkorean spruce is successful and has a prospective future.
文摘A method for the production of somatic embryos and subsequent plant regeneration for Fritillaria ussuriensis M. is described. Whole leaflet cxplants, derived from plantlets grown in vitro, formed light yellowish embryogenic calli within one month of culture in the dark. Somatic embryogenesis was obtained after a 28 d incubation on MS induction medium supplemented with 2 mg / L 2,4-D 0.5 mg / L BA, 0.5 mg / L KT and 500 mg / L CH followed by transfer to a second N medium containing 0.5 mg / L KT and 100 mg / L CH. Somatic embryos were transferred to MS medium with 0.1mg/ L NAA and placed in the light for regeneration. After two weeks, mature somatic embryo developed into whole plantlet.
