Somatic embryogenesis in slash pine (Pinus elliottii Engelm.).

摘要: Slash pine (Pinus elliottii Engelm.) is a hard yellow indigenous to southeastern United states. It rapid-growing, straight, symmetrical tree attaining height of 100 ft, with diameter 1 m. The wood considered be the hardest, strongest, and heaviest all commercial conifers in States. starts producing seeds at age 15–20 years good production every 2–3 years. one two southern pines used for naval stores also most frequently planted timber species North America (Lohrey & Kossuth, 1990). favored by many forest managers because its fast growth excellent utility pulp, lumber, poles (Sheffield et al., 1983). has smallest native range four grows naturally from south South Carolina central Florida west Louisiana. However, been extended northern plantings Tennessee western planting east Texas where it now Plantings outside natural mostly occurred over three decades spanning early 1950s through latter 1970s. During this time, slash ecosystem increased 22%