Flowering and Seed Production in Tropical Eucalyptus Seed Orchards

摘要

During the 1990s, seedling seed orchards and unped-igreed seed production areas of several eucalypt species were planted in a number of Asian countries. The objectives were to mass produce genetically improved seed for plantations, and establish basepopulations for breeding programs. Orchards were planted at close initial spacing, and developed via two or more selective thinnings, to achieve an orchard stocking of around 200 stems ha~(-1) for seed production.