DNA barcoding relies on short and standardized gene regions to identify species. The agricultural and horticultural applications of barcoding such as for marketplace regulation and copyright protection remain poorly explored. This study examines the effectiveness of the standard plant barcode markers (matK and rbcL) for the identification of plant species in private and public nurseries in nort...

R. R. Martin, Horticultural Crops Research Lab, USDA-ARS, Corvallis, WA 97330; K. C. Eastwell, Department of Plant Pathology, Washington State University, Prosser 99350; A. Wagner, Washington State Department of Agriculture, Olympia 98501; S. Lamprecht, Horticultural Crops Research Lab, USDA-ARS, Corvallis 97330; and I. E. Tzanetakis, Department of Botany and Plant Pathology, Oregon State Unive...

'Universal' primers have been used to amplify the nontranscribed spacer (NTS) of the ribosomal 5S gene of avocado genotypes by the polymerase chain reaction (PCR). A rich size heterogeneity of NTSs of individual avocado genotypes was detected after high resolution polyacrylamide gel electrophoresis and silver staining. Specific sizes of NTS seem to be common for members of each horticultural ra...

Organically Evolved Cultural Landscapes of the Pacific 31 Pacific systems of horticulture – continuing cultural landscapes 32 Change through time in horticultural systems relict horticultural and agricultural cultural landscapes 37 Arboriculture in the Pacific Islands 40 Land tenure and settlement patterns 40 Social systems and village structures 45 Social, ceremonial and burial places 47 Relic...

This report examines the behavior of elderly adults and preschool children during horticultural therapy (HT) activities to determine if combining intergenerational groups would complement or detract from the HT goals for each group separately. During a 10-week observation period, data were collected on video documenting attendance, participation time and pattern during separate age group and in...

The productivity, product quality and competitive ability of important agricultural and horticultural plants in many regions of the world may be adversely affected by current and anticipated concentrations of ground-level ozone (O3). Exposure to elevated O3 typically results in suppressed photosynthesis, accelerated senescence, decreased growth and lower yields. Various approaches used to evalu...