Most clearing techniques (Sporne, 1948; Lersten, 1967; Morley, 1968; Herr, 1971; Ruzin, 1999) have been developed for leaf, seed, embryo, and young seedling materials that have less or different secondary products that obscure tissues.
James Joyce, BC Timber sales, BC, Randy Moench, Colorado State University Nursery, CO and Bill Taylor, Webster Forest Nursery, WA kindly provided seedlings material for this study.
The mass screening using seedbox test in the greenhouse uses BPH nymphs with free-choice of plant materials at seedling stage and sometimes the test is extended to different stages of plant growth.
In the following spring when the trees were cut down to the bud, grafts from the shoots removed from the OHxLBJ seedlings were inserted onto Pyrus calleryana seedling rootstocks to provide leaf material for DNA extraction.
These differences in DNA methylation among different species may be caused by detection methods (primer numbers, amplification conditions, time of electrophoresis, and staining methods), material differences (seed, seedling, mature leaves), or genetic control.
A total of 4-8 seeds were also germinated in Petri dishes in order to provide material for harvest of seedling root and shoot samples.
Cultivar survival would be desirable for establishment and might relate to seedling vigor, a trait highly valued in plant material development (Leger and Baughman 2014).
Plant materials were collected from Lycium chinense cutting seedling grown outdoor at an experimental farm at Chungnam National University for 1 year (Daejeon, Korea).
Seed disinfection and seed or seedling quality controls guarantee growers on the sanitary status of their planting material.
Put the seeds and moist material in a plastic bag or seedling tray in a plastic bag or seedling trays, and keep them in a cold area of a refrigerator, such as an otherwise empty crisper drawer.
