Results 191 to 200 of about 60,003 (236)

Butt Rot in Yellow-Poplar Seedling-Sprout Stands

Forest Science, 1967
Abstract Each of 212 yellow-poplar sprout clumps studied had one live and one dead sprout. Butt rot was present in 26 percent of the living stems. Live stem ages ranged from 12 to 45 years. The dead sprout had died of suppression and its stage of decay rather than its size indicated the probability of butt rot in the associated live stem.
J. H. Ginns, R. P. True
openaire   +1 more source

Cryopreservation of yellow-poplar and sweetgum embryogenic cultures

New Forests, 2001
Cryopreservation has become anessential tool for operational application offorest tree embryogenic cultures, due to thelong evaluation periods needed for treesregenerated from these cultures. Fiveyellow-poplar (Liriodendron tulipifera)and seven sweetgum (Liquidambar spp.)embryogenic culture lines werestored in liquid nitrogen for 48 hours, afterwhich ...
Wagner A. Vendrame, Christopher P. Holliday, Paul M. Montello, Dale R. Smith, Scott A. Merkle   +4 more
openaire   +1 more source

Maturation of Yellow-Poplar Somatic Embryos

1991
Since somatic embryogenesis in yellow-poplar (Liriodendron tulipifera) was first reported, a major problem with the system has been the very low conversion frequencies of somatic embryos. Although large numbers of embryos could be produced in liquid medium, conversion percentages were even lower than for those differentiated on solid medium, where ...
openaire   +1 more source

Stem Anatomy of 30-Year-Old Yellow-Poplar

Forest Science, 1975
Abstract Ring width, radial cell diameter, number of cells, and percentage of vessel-, fiber-, and parenchyma-formed wood were observed at eight heights in the stems of five 30-year-old yellow-poplar (Liriodendron tulipifera L.). Number of cells but not cell size was associated with ring width.
A. N. Foulger, J. P. Vimmerstedt, Cynthia Eichar   +2 more
openaire   +1 more source

Genetic Transformation in Liriodendron tulipifera L. (Yellow Poplar)

1994
Liriodendron tulipifera L. (yellow poplar) is one of the most common hardwood forest species in eastern North America, growing throughout the eastern United States and into southern Ontario, Canada. The species is most abundant and reaches its largest size in the lower Ohio River valley and in the Appalachian mountains of North Carolina, Tennessee ...
H. D. Wilde, S. A. Merkle
openaire   +1 more source

Nectar Secretion of the Tuliptree or Yellow Poplar

Journal of Economic Entomology, 1933
Because of the large amount of nectar flow observed from the tuliptree (Lirodendron tulipifera) , an experiment was undertaken to determine the quantity of nectar secreted per blossom and the sugar content of this nectar. The average weight of nectar secreted by one flower was 1.6417 grams.
openaire   +1 more source

Response of yellow poplar seedlings to intermittent fumigation

Environmental Pollution Series A, Ecological and Biological, 1985
Abstract Yellow poplar Liriodendron tulipifera L. seedlings were treated with either clean air, 0·1 ml litre−1 O3, 0·1 ml litre−1 O3 plus 0·2 ml litre−1 SO2, or 0·1 ml litre−1 O3 plus 0·2 ml litre−1 NO2 for one or two 12-h fumigation periods per week.
openaire   +1 more source

Yellow-Poplar: The Piedmont Case

Bulletin of the Torrey Botanical Club, 1980
James N. Skeen, M. Eloise Brown Carter, Harvey L. Ragsdale   +2 more
openaire   +1 more source

Observations on Yellow-poplar Dieback

Forest Science, 1957
T. W. Johnson, M. H. Goforth, R. W. Powell, N. D. Haar   +3 more
openaire   +1 more source

Mechanical Performance of Yellow-Poplar Cross Laminated Timber

2016
Cross-laminated timber (CLT) is a structural wood composite material consisting of multi-layers of lumber orthogonal to each other creating massive wood panels. Development of CLT introduced a new concept of using wood in low to midrise buildings as an alternative for concrete and steel.
Mohamadzadeh, Milad, Hindman, Daniel
openaire   +1 more source